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Spoiler alert: The following section contains plot-specific details.(Skip Section)


General Series

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Kirby series creator Masahiro Sakurai signs his name with a drawing of Kirby.
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HAL Laboratory, the studio that develops Kirby games, contains a jab at a competitor in its name. "HAL" was chosen for the company because, alphabetically, each letter was one space ahead of IBM, suggesting superiority over the other technology corporation.
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In a Japanese commercial promoting the New Nintendo 3DS, Kirby inhales star dust off Kyary Pamyu Pamyu and copies her appearance. He gains a wand topped with a heart and uses it to transform Kyary's outfit. To date, this is the only Nintendo-created "Copy Ability" to appear exclusively in a medium outside of video games, anime, and literature.
Pokémon Diamond, Pearl, and Platinum versions make a reference to the Kirby series: In the Lost Tower, a Roughneck named Kirby uses a Cleffa in battle. Cleffa is a round, pink Pokémon that somewhat resembles Dream Land's hero.
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Since Meta Knight's debut in Kirby's Adventure, fans have speculated that he is a member of Kirby's species. HAL Laboratory has also hinted at this connection in several games. Despite this, Meta Knight's fingers—a bodily feature that other Kirbys lack—have been present since Kirby's Avalanche.
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Excluding console add-ons and systems that predate the series, the only Nintendo system that has not had its own Kirby game is the Virtual Boy.
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The Kirby series has a history of releasing a game as the last first-party Nintendo game on a specific platform in the North American market. Kirby's Dream Land 3, released on the Super Nintendo Entertainment System, and Kirby's Extra Epic Yarn, released on the Nintendo 3DS family of systems, are two such examples.
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Shinya Kumazaki, the director of most modern Kirby games, has gone on record stating that he greatly enjoys creating challenging bosses and considers them one of the "key ingredients of an action game." This may explain why the bosses in Kirby's Return to Dream Land, Kirby: Triple Deluxe, Kirby: Planet Robobot, and Kirby Star Allies have considerably more HP and attack variety than bosses in previous Kirby games.
The first piece of media to give Kirby a voice was the Mario Kirby Masterpiece, a Japanese educational video designed to teach children Kanji/Chinese characters. In the video, Kirby is voiced by actress Mayumi Tanaka.
Broom Hatter is the most frequently seen female character in the Kirby series, having appeared in over 20 games since her debut in 1992.
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HAL Laboratory's BOXBOY! series was developed by staff members who regularly work on Kirby projects. The series' director is Yasuhiro Mukae, who was previously a designer for Kirby: Triple Deluxe. He considered using Kirby as the main character of BOXBOY!, but abandoned the idea because having Kirby produce boxes for gameplay he thought would look too unusual.
The 84 is a secret bar in Japan, only accessible to celebrities in the video game industry. Game memorabilia decorates the establishment. A Kirby plush toy and a decorative Kirby-themed plate sporting Masahiro Sakurai's personal signature are among these decorations.
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On the second episode of the Nintendo Power Podcast, show host Chris Slate, Nintendo Minute co-host Krysta Yang, and Nintendo of America Senior Director of Localization Nate Bihldorff were asked what Kirby feels like. Yang answered that she thought he feels like "a warm stress ball." Bihldorff said that he "want[s] to believe" that Kirby feels like velour fabric. Slate stated that he once ate a Kirby cake pop, so he believes Kirby "both feels and tastes like a cake pop."
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Though the Kirby series is mostly inoffensive and innocent in nature, there exists official media with more shocking content. Kirby's Biggest Case is a German comic published in 1996 containing some of the most adult material in the franchise. It depicts alcohol and tobacco consumption, profanity, suggestive depictions of human female characters, gruesome human corpses, and raunchy humor.
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According to a parfait dessert item on Kirby Café's menu, Meta Knight secretly indulges in a parfait every night. This, however, is not shown in the games.
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On April 1, 2018, the Kirby 25th Anniversary website and Kirby 25th Anniversary Twitter changed to revolve around Waddle Dee's 25th Anniversary. Logos and artwork from both sites were replaced with Waddle Dee equivalents. Waddle Dee Star Allies and Waddle Dee Battle Royale were two games advertised; clicking on either revealed artwork of Meta Knight or Dedede holding signs (that say "ドッキリ," which means "feeling shocked or startled," likely an equivalent of "April Fools!") followed by real artwork of the two games. These changes were an elaborate April Fools' Day joke by Nintendo.
On April 1, 2019, the Kirby Twitter and Kirby Portal changed most images of Kirby to depict him as being cube-shaped instead of spherical. One tweet announced that this would be Kirby's shape from now on. To strengthen the gag, the banners on the home pages of the official Kirby Star Allies and Kirby's Extra Epic Yarn microsites were edited to include a cubic/square Kirby. These changes were an elaborate April Fools' Day joke by Nintendo.
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The first 27 years of the Kirby series took place during the Heisei Era in Japan. The last Kirby game to be released during this period was Kirby's Extra Epic Yarn.
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In the level Moon Grove in the Nintendo DS game Drawn to Life, many Baki enemies ride stars in the same fashion Kirby rides his Warp Star. This may have been intended as a reference.
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There has been one confirmed instance of Nintendo using resources from Kirby Wiki in official media. In August 2017, Nintendo's North American and United Kingdom YouTube channels released two similar videos showcasing almost every game in the series. The Kirby Super Star and Kirby's Dream Land 3 logos used in both are these rips from Kirby Wiki, uploaded by users Gioku and Changtau2005, respectively.

Kirby's Dream Land

The cover art of the North American version of Kirby's Dream Land depicts Kirby as white instead of pink. This is because, at the time of the game's release, there was an argument going on between Masahiro Sakurai and Shigeru Miyamoto over Kirby's coloration. No decision had been reached by the time localization began so Nintendo of America, confused, chose the coloration that appeared on the Game Boy screen.
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Kirby was originally designed by Masahiro Sakurai to be a placeholder sprite while HAL Laboratory developed a protagonist for the game that would later be named Kirby's Dream Land. Over time, Sakurai grew fond of the placeholder sprite, and preferred it over the conception of the original protagonist of the game it was being designed for, so Kirby became the star of his first game.
Kirby's Dream Land was developed using a Twin Famicom and a trackball in place of a keyboard. Series creator Masahiro Sakurai commented years later that it was "like using a lunchbox to make lunch."
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If the player pauses Kirby's Dream Land and waits 20 seconds, Kirby will begin dancing, even if he is in mid-air. After the dance is over, he will return to his original pose and then remain idle until the game is unpaused.
In the Extra Game credits of Kirby's Dream Land, Chuckie's and Hurly's names are erroneously switched. This was corrected in all subsequent appearances.
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Issue 39 of Nintendo Power states that Whispy Woods is also known as "The Larkspur Liar." This was mentioned in the guide covering Kirby's Dream Land around its release, but the nickname never caught on in North American game localizations.

Kirby's Adventure

According to the Kirby's Adventure instruction manual, Dream Land (and thus, Planet Popstar) is light years away from Earth; so far away, in fact, that it is invisible to the Earth's population.
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When Meta Knight first appeared in Kirby's Adventure, he did not use the sword Galaxia as his weapon. He instead used a generic sword, the same as Sword Kirby's. Galaxia was first named in Episode 60 of the anime.
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In Kirby's Adventure, the first letter of each level name (aside from The Fountain of Dreams) forms the acronym "VIBGYOR." When written backwards, it spells "ROYGBIV," the acronym used to remember the colors of the rainbow (red, orange, yellow, green, blue, indigo, and violet). Additionally, the color of the frame of each level introduction sequence also matches the respective color in the acronym; for example, Butter Building's introduction is surrounded by the color blue. The opposite occurs for enemy palettes. For example, purple enemies frequently appear in Rainbow Resort, which begins with the letter R (red).
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While not appearing directly in the game, Lololo from Kirby's Dream Land is referenced in the German translation of Kirby's Adventure. In it, the first level of the game, Vegetable Valley, is called "Lololo's Grove."
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Sparky's Kirby's Adventure and Kirby's Dream Land 2 artworks depict the enemy with four eyes, two on its body and two attached to stalks growing off it. These eyeballs were changed to be energy orbs.
Cool Spook, an enemy in Kirby's Adventure and Kirby: Nightmare in Dream Land, is designed to resemble a teru teru bozu or "shine shine monk." This is a ghost-shaped doll made by Japanese farmers to ward off rain.
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Hiroaki Suga, the main leader and programmer of Kirby's Adventure, expressed concern when confronted with the idea of creating 24 individual Copy Abilities. The work required to accomplish them all would roughly equal the amount needed to make several NES/Famicom games.

Kirby's Pinball Land

Kirby's Pinball Land’s engine was used as the base engine for Pokémon Pinball. This makes Kirby's Pinball Land the only game in the series to have its engine reused by another Nintendo series.
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Kirby's Pinball Land’s default high-score table, which consists of ZEPHYRA, PHYSALI, DENDROB, and GERBERA, is a reference to the robot anime Mobile Suit Gundam 0083; the robots used by the primary protagonists and antagonists are named "GP01 Zephyranthes", "GP02 Physalis", "GP03 Dendrobium", and "Gerbera Tetra."
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Of all the games in the Kirby series, Kirby's Pinball Land has the fastest full-game speedrun. The top run was finished with a time of 5:45 on October 12, 2017.
One Kirby video game has been adapted into a plastic toy. In 1992, toy manufacturer Tomy produced a tabletop pinball cabinet based on Kirby's Pinball Land, called Kirby of the Stars: Kirby's Pinball Game. It was released exclusively in Japan and was presumably made for home usage.

Kirby's Dream Course

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Kirby's Dream Course started development as a game called Special Tee Shot. Remnants of this can be found hidden in the Japanese version of the game. Special Tee Shot was eventually released in 1998 in Japan exclusively on the Satellaview.
Keeby's coloration of yellow may be a reference to the fact that Shigeru Miyamoto initially wished for Kirby to be yellow, although HAL Laboratory eventually settled on Masahiro Sakurai's preference of pink.
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EarthBound/Mother 2 contains a hidden Kirby Easter egg. A unique sprite of Kirby appears as the cursor in the hidden debug mode menu, which can only be accessed through hacking. The sprite appears to have influenced Kirby's standard sprite in Kirby's Dream Course as they look nearly identical. The two games also share some of the same sound effects. EarthBound/Mother 2 and Kirby's Dream Course were in development by HAL Laboratory at the same time, which may explain these occurrences.

Kirby's Dream Land 2

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The original project proposal for Kirby's Dream Land 2 included concept artwork of Kirby riding a four-legged tank. The development team received feedback that riding animals would fit Kirby's personality better, so the tank was replaced with the three Animal Friends.
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The three Animal Friends in Kirby's Dream Land 2 are each named for their special traits. Rick, the hamster who specializes in traversing the ground, is named for the Japanese word riku, meaning land. Coo, the owl who specializes in flight and air combat, is named for the Japanese word kuu, meaning air. Kine, the fish who specializes in swimming and underwater combat, is named for the Japanese word kai, meaning sea.
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In the proposal documents of Kirby's Dream Land 2, an orca resembling Acro appears in a drawing showcasing the game's various characters (which is also showcased in the Kirby's 20th Anniversary Celebration Book), yet this orca never appears in-game. This may hint that Acro was originally intended to appear in Kirby's Dream Land 2.
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Stage 5 of Red Canyon in Kirby's Dream Land 2 contains groups of Star Blocks in the shape of a nude woman. This was effectively hidden because the screen is not large enough to display all the blocks at once. The full image was eventually revealed in a Japanese guidebook.
In the Japanese version of Kirby's Dream Land 2, the female Gooey's role is instead filled by a little human girl named Chao. She was the star of the Japan-only Famicom Disk System text adventure game Yūyūki. The image seen on the Sound Test screen is a recreation of a scene from Yūyūki. Chao appears in Kirby's Dream Land 3 as well, now with another character from Yūyūki, Goku.

Kirby's Block Ball

Two enemies, Waddle Doo and Pengy, were programmed into Kirby's Block Ball but went unused. Their respective defeat animations have Waddle Doo's eye burst out of its socket and Pengy freeze into an ice block.
Brobo, the penultimate boss of Kirby's Block Ball, is the only boss in the Kirby series with no confirmed color palette, as it lacks official artwork and only physically appears in a monochromatic Game Boy game. Though the character is referenced with a Stone transformation in Kirby Star Allies, this bronze statue does not offer any clues to its possible colors.

Kirby's Toy Box

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On November 8, 2016, ROM cartridges containing Kirby's Toy Box - Balls Round and Round, Kirby's Toy Box - Cannonball, Kirby's Toy Box - Arranging Balls, and Kirby's Toy Box - Pachinko were sold in a Japanese auction for a total of ¥85,500. They were purchased by members of Video Game History Foundation, who preserved the games by dumping their ROMs online. These four games were previously thought to be lost, as they were not sold in stores and their ROM data had not previously surfaced online.

Kirby Super Star

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Series creator Masahiro Sakurai's favorite Copy Abilities in Kirby Super Star are "hand-to-hand" abilities like Fighter and Suplex.
The Hammer Copy Ability's Ability Hat may be inspired by Japanese media. The combination of a braided Japanese headband and a comically oversized wooden mallet is strongly reminiscent of Hammerin' Harry, the main character of a video game and pachinko series by Irem that began in 1990. Harry is known as Gen-san in Japan, as well as in the English localization of the 2008 game Hammerin' Hero.
The Yo-Yo Copy Ability's yo-yo, ability cap, and the background of the ability icon are all direct references to the SNES game EarthBound. The background depicts EarthBound’s menu screen, and the yo-yo and ability cap come from the protagonist Ness, who wears a remarkably similar cap and often uses a yo-yo as a weapon. This can be seen as HAL Laboratory referencing one of its own games because EarthBound was also developed by HAL Laboratory.
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Chef Kawasaki's name is derived from Kawasaki, a city in Japan's Kanagawa Prefecture. The city is famous for its motorcycles. According to Kirby series creator Masahiro Sakurai, Kawasaki's designer liked motorcycles and named him based on this passion.
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The design of Capsule J, a helper in Kirby Super Star, is heavily based on the Konami character TwinBee. In Kirby Super Star Ultra, Capsule J was replaced by Capsule J2, a Helper with a drastically different design. This change was likely made for legal reasons.
According to Kirby Super Star’s Japanese instruction manual, the name of the colossal cavern in The Great Cave Offensive is "Majirute" (マジルテ).
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The final cutscene of Kirby Super Star’s Revenge of Meta Knight sub-game — the one in which Kirby drives his Wheelie into the sunset with Copy Ability credits listed below — seems to be an homage to the ending of Lupin the Third Part II, a 1977-1980 Japanese animated series produced by Tokyo Movie Shinsha based on the manga by Monkey Punch. In the anime, Fujiko Mine drives her motorcycle into the sunset while the credits roll. Both endings are also shown from a side view.
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In Kirby Super Star, Fatty Whale is composed of only three sprites, all of which are part of the background. The sprites are rotated and/or stretched during attacks. This makes Fatty Whale one of the most graphically simple bosses in the Kirby series.
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Fatty Whale, a boss in Kirby Super Star, smokes a pipe. This was the only tobacco reference in the Kirby series until Kirby and the Rainbow Curse, as The Claykken shares the same trait. Another tobacco reference includes an image in Kirby: Triple Deluxe’s credits.
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Burning Leo from Kirby Super Star draws inspiration from lion spirits of traditional Chinese Kabuki. His hair vaguely resembles the hair of a lion spirit, and his name also reflects his relation to them. In addition, the way he twirls his hair while moving is indicative of them.
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Gator, an enemy in Kirby Super Star, is modeled after the gators appearing in Revenge of the 'Gator, a pinball game released by HAL Laboratory in 1989.
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Moto Shotzo, an enemy in Kirby Super Star, is based on Trax, the titular character of a Game Boy game that HAL Laboratory created in 1991. Kirby Mass Attack references the enemy's origin: As one of Kirby's attacks in Kirby Quest, Kirby flees from Trax’s level 1 boss while riding a Moto Shotzo.
The very first room of Peanut Plains in Kirby Super Star is an indirect reference to the International version of Super Mario Bros. 2. Kirby starts in midair and falls down as he gets below several blocky hills that are in a similar arrangement to the ones in the very first room of Super Mario Bros. 2. To add to that, the door is at the right and the lone Sir Kibble found in the area is very close, if not directly on, the spot where one of the first Shy Guys in Super Mario Bros. 2 is found. In Kirby Super Star, the grass is pinkish, but in Kirby Super Star Ultra, the grass is green, further increasing the similarity.
In The Legend of Zelda: Link's Awakening, an enemy named Anti-Kirby appears, and looks and behaves similarly to Kirby himself. HAL Laboratory returned the favor by including The Legend of Zelda cameos, as well as many other Nintendo cameos, in Kirby Super Star.
Arena Waddle Dee and Bandana Waddle Dee are the only bosses in the Kirby series that can be defeated by Kirby's inhale.
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In Kirby Super Star, the Computer Virus can be fought in The Arena. If, during this battle, Kirby picks up a Ninja Copy Essence, the message box will mistakenly state "Kirby becames a ninja!"
In Star Fox Zero — The Battle Begins, Slippy Toad reads a Nintendo Magazine. The names Floria, Aqualiss, Mecheye, and Halfmoon appear on the magazine's cover. These are direct references to the four planets of the same names in Kirby Super Star’s Milky Way Wishes sub-game.
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According to the Kirby's 20th Anniversary Celebration Book, the developers of Kirby Super Star originally considered creating a technique called the "Guard Bomb;" if Kirby guarded for enough time and absorbed attacks, he would charge up an enemy-damaging explosion that he would trigger when he lifted his guard. This idea was scrapped.
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Eight primary sub-games were included in Kirby Super Star’s proposal document, but only seven of them were picked for development. The cut concept was called Kagero Mansion. It was intended to be a puzzle-oriented sub-game in which a curse would've sealed Kirby's mouth. Unable to inhale, he would have had to acquire Copy Abilities through other means, such as using candles to obtain the Fire ability.
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In Japan, Kirby Super Star was packaged in a box made of Paulowina wood. This wood is culturally significant in Japan, being used to store valuable objects. As such, Nintendo used this packaging to comment on the value of the game.

Kirby's Star Stacker

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Excluding Kirby Slide, which contains only two music tracks, Kirby's Star Stacker is the last Kirby game to feature a wholly original soundtrack. Outside of the series staple jingles for defeat and the Kirby Dance, no track in the game is reused from another source, rearranged, or remixed.
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Of all the games in the Kirby series, Kirby's Star Stacker has the longest full-game speedrun. The top run was finished with a time of 4:17:37.31 on April 22, 2017.
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Excluding Kirby Slide, a sliding puzzle game with no characters to speak of, Kirby's Toy Box and Kirby's Star Stacker are the only games in the Kirby series that do not feature any female characters.

Kirby's Dream Land 3

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Batamon, an enemy appearing in Kirby's Dream Land 3, bear a great resemblance to Kirby for unknown reasons. It has been suggested that it is an abandoned sprite of Kirby, discarded in the game's early development, but this has not been confirmed.
The Hyper Zone in Kirby's Dream Land 3 is thought to be named after an SNES shooter also developed by HAL Laboratory. HyperZone also uses the names Grass Land and Ripple Field, both of which are levels in Kirby's Dream Land 3.
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Dekabu and Pacto are the only enemies in Kirby's Dream Land 3 to be instantly destroyed by the Ice ability. As larger foes, they would have required a larger ice block sprite to encase them. The developers of the game did not create such a sprite, which is likely the reason they cannot be frozen.
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The Kirby's Dream Land 3 enemy Keke is based on the titular character of the animated film Kiki's Delivery Service. Not only does Keke share a similar name with the film's protagonist, Kiki, she also wears a similar black robe and has a similar hair style. Keke's ears also bear a striking resemblance to Kiki's bow.
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In the Japanese version of Kirby's Dream Land 3, Boss Butch's title screen has the phrase "NINTENDO 16" written across the top. This is a Nintendo 64 reference applied to the Super Famicom, as the Super Famicom is a 16-bit console.
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Kirby's Dream Land 3 marks the longest period in which a Kirby game developed in Japan was withheld from Japanese audiences compared to other regions. The game released in Japan on March 27, 1998—exactly five months after it debuted in North America.

Kirby's Super Star Stacker

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Gryll is the only final boss in the Kirby series who is not portrayed as evil.

Kirby 64: The Crystal Shards

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Kirby 64: The Crystal Shards marks the last appearance of King Dedede without his mittens.
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Snipper was the first enemy that debuted in Kirby 64: The Crystal Shards to appear in another game: Kirby Tilt 'n' Tumble. It was the only one to return for 17 years. Several other enemies from the Nintendo 64 game have since reappeared, most notably in Kirby Star Allies.
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According to a description of a pre-release screenshot of Kirby 64: The Crystal Shards, Kirby's inability to inhale the boss Acro stems from a glitch in Kirby's genetic code.
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Spoiler for Kirby 64: The Crystal Shards
The official Kirby 64: The Crystal Shards Strategy Guide published by Prima is incomplete and inaccurate in many areas. The most notorious mistake is the book's summation of . The villain is mentioned only once, in the Info Card section, where it is stated to be "a benevolent creature" who "rarely presents any trouble in the cloud levels of Shiver Star." This information is blatantly false.
Spoiler for Kirby 64: The Crystal Shards
The official Kirby 64: The Crystal Shards BradyGames guide book claims that when the Crystal's light purged the Fairy Queen of Dark Matter, the queen herself was killed. However, she is shown to be alive and well after Dark Star is destroyed.
Pre-release screenshots of Kirby 64: The Crystal Shards show that Waddle Dee, Adeleine, and King Dedede were all playable individually in the Main Mode at one point in development.
Adeleine used to be the mascot of the "Galería CN" (CN Gallery) section of the Mexican Club Nintendo magazine that began publication in 1991. The section was incorporated late in 2000 and was then named "Galerie d' Adeleine" (Adeleine's Gallery). The section allowed magazine subscribers to send their own artwork to the editors with a select few being featured in an issue of the magazine. The gallery's name has since been changed to its current name and Adeleine has been removed from the section.

Kirby Tilt 'n' Tumble

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Kirby Tilt 'n' Tumble was nearly rebranded as a Pokémon game in its releases outside of Japan.
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If the player remains on Kirby Tilt 'n' Tumble’s title screen long enough, a stream of multi-colored moons and stars will begin flowing down the screen. A small sprite of Kirby will appear as well. Tilting the Game Boy will change the direction and speed of the stream, allowing the player to blow Kirby around in any direction wanted.
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Because Kirby Tilt 'n' Tumble’s sensors are calibrated for the cartridge to be played upright, playing the game on a Game Boy Advance SP and Game Boy Player causes some problems. While they can both boot the game, the controls are reversed on the SP because the cartridge slot is on the bottom instead of the top. Since the sensors are inside the cartridge, the only way to play it on the Game Boy Player is to pick up and tilt the GameCube itself, which is impractical.
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Stage 3 of Level 8 in Kirby Tilt 'n' Tumble contains 797 Gordos, seven Bronto Burts, four Shotzos, and one UFO, making a total sum of 809 enemies. This stage contains more enemies than any other in the Kirby series (excluding ones that spawn enemies infinitely).

Kirby: Nightmare in Dream Land

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When Kirby: Nightmare in Dream Land is turned on, a total of 120 Kirbys rush across the title screen.
Kirby: Nightmare in Dream Land was the first Kirby game for a handheld system that allowed the hero to dash. Fittingly, it is a remake of Kirby's Adventure, the game that introduced Kirby's dash ability.
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The HAL Room in Kirby's Adventure cannot be accessed in the game's remake, Kirby: Nightmare in Dream Land. This may be due to unorthodox NES programming needed for it to behave as a special area inside another room; the game was released almost ten years after the introduction of the NES console, and HAL developers were pushing the system to the limits as to what it could do. Kirby: Nightmare in Dream Land’s HAL Room is still inside the level's memory, but can only be accessed via codes. Also, in the original NES game, accessing the room requires the use of glitches, and it is not supposed to be normally accessible. Programming differences between ports (NES to GBA) and glitch fixes likely cut out any method to normally access this room.
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Kirby: Nightmare in Dream Land’s Japanese website depicts many screenshots that were taken at a previous point in development. Poppy Bros. Sr. appears in one. The image shows that his sprite originally bore a strong resemblance to his sprite in Kirby Super Star.
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Kirby: Nightmare in Dream Land’s Japanese website depicts many screenshots that were taken at a previous point in development. Pengy appears in one. The image shows that its sprite originally bore a strong resemblance to its artwork from Kirby's Adventure.
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Kirby: Nightmare in Dream Land is the final game that Shinichi Shimomura (a longtime level designer for the Kirby series and the director of Kirby's Dream Land 2, Kirby's Dream Land 3, and Kirby 64: The Crystal Shards) contributed to before his sudden and unexplained disappearance from the public eye. Shimomura served as co-director of Kirby: Nightmare in Dream Land alongside series creator Masahiro Sakurai.
According to programmer Eitaro Nakamura, the Kirby: Nightmare in Dream Land development staff struggled to get four-player co-op working sufficiently. It did not work properly until "one or two months" before its deadline.

Kirby: Right Back at Ya!

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The English dub of Kirby's anime series bears the title Kirby: Right Back at Ya!. This name may have been chosen because its initials (KRBY) spell out Kirby's name (with the vowel detracted).
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Waddle Dees have no mouths, so the way that they eat has been pondered by fans. In Kirby: Right Back at Ya!, it was revealed that Waddle Dees eat by absorbing food through their faces.
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In the first 30 episodes of Kirby: Right Back at Ya!, King Dedede drives a tank. In the Japanese version, this tank is painted with military camouflage. This was changed to a plain orange color in the 4Kids dub. Despite this, the tank can be seen in its Japanese colors for a split second in the dub of Un-Reality TV.
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Lady Like's character in the English dub of Kirby: Right Back at Ya! is loosely based on Lisa Douglas, a character from the classic American sitcom Green Acres.
The Island Sisters sing to calm the creature Mosugaba in the Kirby: Right Back at Ya! episode Caterpillar Thriller. In the Japanese version, their song's lyrics contain a number of hidden references to both Nintendo and HAL Laboratory. In the English dub, the song is instrumental and instead consists mostly of soprano singing that bears a resemblance to the Flower Duet, composed by Léo Delibes as part of the 1883 French opera Lakmé. The Island Sisters themselves are also a reference to the Shobijin twins from the Godzilla film franchise.
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Sirica from Kirby: Right Back at Ya! wields a transformable weapon that can act as a flamethrower, a sword, a machine gun, a bazooka, and a grappling hook. The weapon bears a Nightmare Enterprises logo to indicate its origin, though this fact is never explicitly mentioned in Sirica's episode, Crusade for the Blade.
In the Japanese version of the Kirby: Right Back at Ya! episode Cooking Up Trouble, the Chef Shiitake: All About Cooking scene plays an arranged version of the intro music from Gourmet Race, adding in a few new parts that were not in Kirby Super Star. This theme was remixed twice and used in two Kirby games: Kirby Super Star Ultra (in the Special-Edition Blooper Reel) and Kirby's Return to Dream Land (in Stage 2 of the Scope Shot sub-game).
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The Kirby: Right Back at Ya! episode A Novel Approach reveals that King Dedede is illiterate, a trait that remains consistent for the rest of the anime. Despite this, in the earlier episode The Big Taste Test, the king is able to effortlessly read the Encyclopedia of Food.
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When the monster Chuckie whips his head around in the Kirby: Right Back at Ya! episode D'Preciation Day, he moves very fast—so fast, in fact, that one can see pencil lines of where his neck was drawn in the previous animation frame.
Sharbon, a monster in Kirby: Right Back at Ya!, was the winner of an art contest in Japan, where artists could draw their own character that would have a chance of appearing in the two-part Scare Tactics episode.
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The episode A Dental Dilemma was not aired during Kirby: Right Back at Ya!’s original North American run because of the fear young children experience when meeting the dentist for the first time (although it was meant to encourage children to brush their teeth and visit a dentist if they develop cavities). The episode was added back during the show's second run, airing as the 95th episode.
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Chef Kawasaki's and Iro's voices in Kirby 3D sound slightly different from their voices in the rest of Kirby: Right Back at Ya!. This is because the episode was dubbed after the death of Maddie Blaustein, the actress who originally supplied the voices of both characters.
The Kirby: Right Back at Ya! episodes Air-Ride-in-Style - Part I and II were moved ahead in the airing schedule during the anime's first run in the United States. They are ordinarily episodes 96 and 97, respectively, but were aired as episodes 50 and 51 in an attempt to cash in on the then-recently released Kirby Air Ride. Fans complained about a continuity error: By airing the episodes accordingly, King Dedede went from discovering the location of the Warp Star to having no knowledge of its hiding spot two episodes later.
The Baton, Water, Iron, and Top Copy Abilities that appear in Air-Ride-in-Style - Part II were designed by fans. There was a contest in Japan to submit Copy Ability ideas, and these were the winning abilities. Water would later be redesigned and introduced to the Kirby video game series in Kirby's Return to Dream Land.
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King Dedede's Waddle Dees in Kirby: Right Back at Ya! wield spears whenever they are called to combat. Since the anime's release, spears have become a trademark weapon of Waddle Dees. Spear-wielding Waddle Dees appear as enemies in several games and Bandana Waddle Dee also wields one whenever he is playable.
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Kirby Air Ride and Kirby and the Rainbow Curse reuse certain music tracks directly from the Japanese version of Kirby: Right Back at Ya!. Some examples can be heard in Fantasy Meadows, Stadium, and City Trial in Kirby Air Ride; and in Dig and Dash, Kirby Rocket's Big Blastoff, and Back to the Battleship in Kirby and the Rainbow Curse.
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The voice, mannerisms, and profession of the Kirby: Right Back at Ya! monster Max Flexer are based on real-life fitness expert Richard Simmons.
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Erasem, a Nightmare Enterprises monster featured in the Kirby: Right Back at Ya! episode Escar-Gone, makes a cameo appearance in a different episode altogether: In Scare Tactics - Part II, what appears to be Erasem can be seen inside a siren in the glowing light room.
In the Japanese version of Kirby: Right Back at Ya!, the monster Heavy Anaconda's name is actually a pun. The Japanese word for heavy, "ヘビー/hebii," is similar to the pronunciation of the Kanji "蛇/hebi," which means snake or serpent.
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After Anige's destruction in the Kirby: Right Back at Ya! episode Tooned Out, the sun rises and Escargoon panics about King Dedede's anime missing its deadline. He holds up an alarm clock and announces that only five minutes remain before the anime is due to Nightmare Enterprises. The alarm clock shows that it is 7:25 AM; this means the deadline is 7:30 AM, which was the Japanese airing time for Kirby: Right Back at Ya!.
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One week before 4Kids TV went off the air and became an online network, a special airing of the Kirby: Right Back at Ya! episode Delivery Dilemma was dedicated in memory of long-time 4Kids voice actress Maddie Blaustein, as it was her favorite episode.
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Two dubbed Kirby: Right Back at Ya! episodes were considered lost media after their final airings: Shell-Shocked and A Chow Challenge. Recordings of both were found and uploaded by the Operation Hoshi no Kaabii YouTube channel on September 26, 2015.
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One game in the Kirby series no longer exists and has no recorded documentation. Kirby Star Ride, a Flash game created by 4Kids TV to promote the anime Kirby: Right Back at Ya!, appeared on the 4Kids TV website's game list for one known day: December 6, 2008. Nothing is known about it other than its title.
Over a decade after Kirby: Right Back at Ya! concluded, the series had a resurgence in popularity online due to fans sharing memorable quotes and images through social media. Cartoon Buffoon is the most referenced episode of the show, with many of King Dedede's lines being turned into memes. On January 23, 2019, the YouTube channel Kirby Reanimated uploaded the full episode reanimated by over 300 animators, showing the fans' enthusiasm.
Like Kirby's three Animal Friends from Kirby's Dream Land 2, Nago from Kirby's Dream Land 3 was considered to appear in Kirby: Right Back at Ya!; concept art of him was drawn. Though he was never formally used, a similar-looking character named Chef Nagoya appears in the episode A Chow Challenge.
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The term Star Warrior is used frequently in Kirby: Right Back at Ya! to describe Kirby and Meta Knight, among other characters. However, this name has only been used in one video game to date: Bye-Bye BOXBOY! The unlockable comic So Close, Yet... sees the protagonist, Qbby, using several Copy Abilities before Kirby finds him. The comic's description reads: "The power of the Star Warriors finally belongs to Qbby!"
The Mario Kirby Masterpiece and all Kirby: Right Back at Ya! VHS tapes hold the distinction of being the physical Kirby media that run on the oldest hardware. The VHS player was introduced to the Japanese market in 1976, 16 years before the series began.

Kirby Air Ride

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Kirby Air Ride was the last Kirby game that the series creator, Masahiro Sakurai, worked on as part of HAL Laboratory; after its release, he resigned from HAL and formed his own company, Sora Ltd. Two weeks after his resignation, he explained in an interview with Nintendo Dream that he had grown tired of the sequelization of his projects by HAL and Nintendo, stating that "it was tough for me to see that every time I made a new game, people automatically assumed that a sequel was coming." He would later serve as a "Special Advisor" for Kirby & The Amazing Mirror and would collaborate with Nintendo and HAL (which served as Development Cooperation) to help create Super Smash Bros. Brawl.
Kirby Melee's theme in Kirby Air Ride is primarily an orchestral remix the Japanese Kirby: Right Back at Ya! theme song.
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An unused item for Top Ride exists in the files of Kirby Air Ride, and can be accessed in the game's debug menu. It is called "UsiroYurerun," which translates as "Waver Behind." Physically, the item resembles a crystal on top of a support of some kind. The item distorts the appearance of the area directly behind the machine using the item. The item also produces two sound effects that are not used otherwise. The original purpose of the item is unknown, but it is possible that it may have been used to confuse other players.

Kirby & The Amazing Mirror

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If Kirby sinks toward the bottom of the screen in a certain room in Rainbow Route, a lone Squishy slowly rises up from it. This is the only location in Kirby & The Amazing Mirror where the player can find this enemy.
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Though it is impossible to confirm exactly which Mesoamerican civilization inspired Radish Ruins in Kirby & The Amazing Mirror, it appears to draw heavy influence from the Maya culture. The level features angular architecture and wall carvings, two staples of Maya construction. Some backgrounds depict square stones protruding from the walls—these seem to be based on the Maya glyphs. One circular carving in the foreground of one room resembles the Tzolk'in. Additionally, the surrounding canyon environment resembles the Yucatán area more closely than the mountainous region of Peru, distancing it from the Andean civilizations.

Kirby: Canvas Curse

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A pink Nintendo DS stylus was included as a physical extra with all Japanese retail copies of Kirby: Canvas Curse. This bonus was omitted from the game's releases in other regions.
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Concept artwork seems to suggest that additional playable characters were considered for Kirby: Canvas Curse; these characters include Lololo & Lalala, Zero, Dark Matter, and Nightmare's Power Orb form.
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Kirby: Canvas Curse concept artwork reveals that a three-headed dragon was considered as a boss near the end of the game.

Kirby: Squeak Squad

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Kirby: Squeak Squad was the first Kirby game to be released in Korea.
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The shadow that steals Kirby's Strawberry Shortcake at the beginning of Kirby: Squeak Squad appears to be a Waddle Dee. This can be seen by slowing down the cutscene.
The developers had a difficult time deciding what Bubble's ability hat should be, as bubbles are flexible and do not have a defined shape. The team eventually settled on the current design: a shower cap, specifically one used by Japanese children to prevent soap from running into their eyes. This design was met with some resistance, as some team members pointed out that Kirby does not have hair (though other members would make the counterpoint that Kirby's eyes would still need protection against soap foam). Additionally, the developers did not know if the shower caps were still used by children in 2006; the team looked in shop windows to see if the caps were still being sold.
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Dark Nebula is listed among the Dark Matter invaders in the Japan-exclusive 20th Anniversary Hoshi no Kābī Pupupu Taizen. This would explain the similar coloration of Dark Daroach and Dark Matter's swordsman form. It is unknown what relation, if any, it has to Zero and other than a similar name and certain attributes.
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In an interview, Masanobu Yamamoto, a part of the character design department at HAL Laboratory, stated that he would like to release a game starring the Squeaks or Meta Knight, as it would increase their character development and recognition.
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An exclusive Polar White Nintendo DS Lite (marked with a monochromatic Kirby holding a Treasure Chest) was released in Australia shortly after the release of Kirby: Squeak Squad. Forty of these handheld consoles were given away by the Australian magazine, K-Zone.

Kirby Super Star Ultra

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Masked Dedede's theme, a music track from Kirby Super Star Ultra that has become popular among fans, is based on King Dedede's theme from Kirby's Super Star Stacker.
By examining the jaw-like structure of Capsule J2's sprite in Kirby Super Star Ultra, it becomes evident that the game developers may not have started from scratch when making it. The lower-jaw structure bears a strong resemblance to the green visor of Capsule J, the enemy from Kirby Super Star that Capsule J2 replaces. It would appear that the developers simply overlapped a new head on a higher-quality Capsule J sprite.
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Spoiler for Super Kirby Clash
Galacta Knight has never appeared canonically in the Kirby series. Every appearance he has made has been in a non-canon game, such as Super Kirby Clash, or a sub-game that retreads previous levels or bosses, such as Meta Knightmare Ultra or The True Arena. The latter have been referred to as "'what if' scenarios" by director Shinya Kumazaki.

Kirby's Epic Yarn

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Kirby's Epic Yarn began development as a game called World of Fluff (or "Keito no Fluff" in Japanese), which would have starred Prince Fluff as the protagonist. In 2009, Nintendo decided to change the game into a Kirby game, pushing Fluff to the side as Kirby's partner.
Spoiler for Kirby's Epic Yarn, Kirby's Extra Epic Yarn
The villain Yin-Yarn is merely a creation of the knitting needles he wields. In the English version of Kirby's Epic Yarn, his true identity is only hinted at through the progression of the final battle, while in the Japanese version it is made more explicit through his Cast description. Yin-Yarn's possessed victims' eyes flash between yellow and purple, as seen before Meta Knight's battle in Space Land—these are the same colors as the knitting needles' eyes.
The earliest footage of Yoshi's Woolly World was extremely similar to Kirby's Epic Yarn; Yoshi was primarily a yarn outline, and his body could change shape depending on his action. These similarities were later removed from the game. At E3 2014, Takashi Tezuka began his presentation by stating, "When Nintendo reached out to Good-Feel, we didn't ask them to make Yoshi's Woolly World as a sequel to Kirby's Epic Yarn. We said we wanted to make a Yoshi game." These actions were likely taken to assure viewers that Yoshi's Woolly World would be a brand new experience and not a Yoshi-themed rehash of Kirby's Epic Yarn.
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In the Wii U game Yoshi's Woolly World, the music of the stage Yoshi and Cookies begins with the first 12 notes of the Fountain Gardens theme from Kirby's Epic Yarn. Both games were made by the company Good-Feel, and composer Tomoya Tomita worked on both soundtracks.
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Of all the games in the Kirby series, Kirby's Epic Yarn has received the most positive critical reception, with the game currently holding an 88.67% on review compilation site Game Rankings, making it the fourth best reviewed Wii game of 2010.
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In Kirby's Epic Yarn, Metamortex transformation powers were granted to Kirby when he ate Yin-Yarn's Metamato. Prince Fluff, however, is able to perform all of the equivalent transformations without having used any known power-up. This suggests that transforming is either Fluff's innate ability or that all Patch Land inhabitants are able to do it. Only Kirby and Fluff demonstrate this ability in the game, however.
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In the intro of the North American version of Kirby's Epic Yarn, Kirby exclaims that the grass "feels like pants" when he first arrives in Patch Land. In the European version of the game, Kirby instead states that the said grass "feels like trousers." This change was likely made because of regional differences, as pants are referred to as trousers in most parts of Europe; "pants" in the UK also refer to "underpants" in the United States.
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In Kirby's Epic Yarn, while Kirby and Prince Fluff are performing the Kirby Dance after ringing the Bonus Bell, Kirby will occasionally transform into an umbrella. This transformation does not appear elsewhere in the game.
Unlike Buttonfly, Buttonbee, and Buttonbug, Orbitfly, an enemy from Kirby's Epic Yarn, does not home onto enemies when thrown. This can only be found be hacking the game, as Orbitfly is not found outside of Rocket Metamortex sequences.
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Food has been used frequently as a naming convention in the series since Kirby's Adventure. Despite this, it was not until 17 years later that Kirby visited a location made entirely of food: Sweets Park in Kirby's Epic Yarn.
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To complete Kirby's Epic Yarn 100%, Kirby needs to collect a total of 144,800 Beads. These are used to purchase Apartments 201 and 202 (10,000), Apartments 301 and 302 (25,000), Loomis Woole's entire inventory of Fabrics (30,000), and Chaise Woole's entire inventory of Furniture (79,800).
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In Kirby's Epic Yarn and its remake, Kirby can acquire 9,999 Beads and a streak of 999 in two stages: Tube Town and Whispy's Forest. In the former, he can throw Yarn Balls (converted from Dandan projectiles) at Snip-Snaps infinitely to get the Beads; in the latter, Kirby can fire out of cannons to collect the same four Beads from Bronto Burts infinitely.

Kirby Mass Attack

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The Skull Gang's color scheme in Kirby Mass Attack is more significant than it appears. The members' clouds are black and purple because in Japanese culture, those colors symbolize night and death, respectively. Necrodeus and Skullseer both have red eyes, which is symbolic of anger or danger.
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Evidence detailing an non-ice variant of Ice Dinos exists both in Kirby Mass Attack’s memory and within the final game itself. Orange Dinos sprites are buried in the game's code. Huge Star Blocks—which are the same size as the huge ice blocks spat by Ice Dinos—appear rarely in the game, and may have originally been intended to be used as ammunition by the enemy. In the game itself, a skull that greatly resembles an Ice Dinos’ head can be found in the foreground of Stage 1 of Sandy Canyon. Based on this evidence, it seems likely that Star Block-spitting Dinos (and small orange Dice) were intended to appear in this stage.
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Gobchomplin, an ordinarily invincible enemy in Kirby Mass Attack, can only be defeated one way without using Invincibility Candy: In Stage 5 of Volcano Valley, one Kirby must be snatched by the Gobchomplin while the other Kirbys grab a Skull Key. The captured Kirby will then be dragged out of the enemy, destroying it in the process.
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One piece of official artwork depicts Stactus, an enemy in Kirby Mass Attack, with red feet similar to Kirby's. The enemy does not have feet in-game and the game's code does not contain any footed Stactus sprites, so it is unknown why this artwork exists.
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Daroach, the leader of the Squeaks, delivers more dialogue than any other character in the Kirby series. He has over 300 lines in Kirby Mass Attack, excluding notes he wrote in the instruction manual.
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Kirby Mass Attack’s game over screen may be a reference to the game over screen in EarthBound, another game produced by HAL Laboratory.
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A sub-game called Strato Patrol EOS is playable in Kirby Mass Attack. The sub-game's title and title screen are references to Uchuu Keibitai SDF, a shooting game developed for the Famicom Disk System by HAL Laboratory in 1990.
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The Kirby Curtain Call sub-game in Kirby Mass Attack becomes gradually more difficult as more rounds are cleared, to the point where the player cannot realistically go any further. If the player keeps winning, however, it is revealed that the game goes on infinitely. The counter stops counting at Stage 99, however.
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A sub-game called Kirby Quest is playable in Kirby Mass Attack. The sub-game's title screen was designed to mimic that of the SNES game Arcana, which was also developed by HAL Laboratory.
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When Kirby completes the Kirby Brawlball sub-game in Kirby Mass Attack, the game shows the player a tip: Press and hold Right, Select, and B on the title screen. If this code is entered correctly, the player will hear a meow and see a cat walk across the bottom of the screen. This is a reference to Kirby's Pinball Land, in which inputting codes would be signaled by a cat walking across the screen.
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After first appearing in a trailer for the cancelled Kirby GCN, HR-D3 made its official debut in Kirby Mass Attack. Its attacks and color scheme are virtually identical to those seen in the trailer, meaning the robot was likely included as a reference to the cancelled Kirby game. Despite this intentional reference, however, its laser is inaccurate; the laser HR-D3 fired in the Kirby GCN trailer was blue while the laser it fires in Kirby Mass Attack is orange.
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A fifth fruit variety, grapes, was intended to appear in Kirby Mass Attack but was scrapped. It was likely cut late into development since other unused elements, namely finished tilesets and bubble items, feature it. Unlike most scrapped elements of the game, grapes have official artwork. The Kirby Smashifyer photo editor on the North American Kirby Mass Attack website subtly used this art, showing it in a photo provided by the developers. Two identical bananas take up option slots in the webgame; this suggests a developer noticed the item was scrapped in Kirby Mass Attack and likewise replaced it in Kirby Smashifyer.
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One of the unused elements in Kirby Mass Attack is a palette selection screen where the player would have been able to change the colors of the Kirbys. Thirteen color palettes would have been available, most of which correspond to a Spray Paint color in Kirby & The Amazing Mirror.
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Unused sprites of King Dedede are buried in the Kirby Mass Attack’s memory. These sprites are shown from above, suggesting that he was intended to be a playable character in the Strato Patrol EOS sub-game at one point in development.
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Unused screens of a Crane Fever-style sub-game can be found in Kirby Mass Attack’s coding. Instead of obtaining 1UPs, however, the player would grab plushies to add to a collection.
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The early level map for Volcano Valley found in Kirby Mass Attack’s code has a more pinkish-purple hue and sports lanterns with green flames, structures emitting a green glow, and a dark fortress in place of the volcano. This suggests that the level was originally planned to be less volcanic and more dark-themed, as seen in its later stages.
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Early splash screens buried in Kirby Mass Attack’s memory reveal that Dedede Resort was originally planned to be divided into two levels: Dedede Land and Frozen Field. The former presumably would have encompassed most of Dedede Resort's stages seen in the final game, and the latter presumably would have contained Stages 8 and 9 from the final game alongside other icy stages.
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Mine Carts were planned to appear in Kirby Mass Attack but were scrapped. Buried in the game's code are unused sprites of an orange cart for the Kirbys to ride, a purple cart that an unused enemy would ride, and a red cart mounted on skis that the Kirbys would ride. Official artwork was also produced of the Kirbys riding through a snowy stage (presumably in the scrapped Frozen Field level) in the latter cart.
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The developers of Kirby Mass Attack did not intend to create eight sub-games for it. They were developed separately from the main game, and despite progress on the main game being troubled at times, the production of the sub-games was consistently smooth. The developers initially planned to cut some of them, but because the sub-games were deemed fun, they decided to keep as many of them as possible.

Kirby's Return to Dream Land

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Kirby's Return to Dream Land contains many throwbacks and references to past games in the Kirby series. One such throwback is hidden in the game's logo; the gradient (yellow to white) on the words "Return to Dream Land" appears to pay homage to the gradient on Kirby's Dream Land’s logo.
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Early in Kirby's Return to Dream Land’s development, Nintendo's president Satoru Iwata instructed the development team to make the game single-player. The developers, however, felt a strong desire to include multiplayer in the game—so much so that they secretly made an agreement with HAL Laboratory to eventually shift focus to making Kirby's Return to Dream Land a 4-player game.
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During Kirby's Return to Dream Land’s development, the creative team considered calling the game Kirby Wii: Super Friends, in reference to the game's Super Abilities and 4-player co-op.
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Inspecting the game files in the Kirby's Return to Dream Land disc reveals models, images and movements for what appears to be a Super Ability version of the Cutter Copy Ability, which is not in the released game. The prospective "Super Kibble" enemy that would have granted Kirby this ability is not found in the game files, suggesting that this Super Ability was an early omission.
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Every Kirby and Super Smash Bros. game released since 2012 has referenced Kirby's Return to Dream Land in some capacity, with the exception of one game: Kirby's Extra Epic Yarn. The most commonly referenced elements of the game are Magolor, Landia, the Lor Starcutter and its theme music, Kirby's Ultra Sword ability, and the music "The Adventure Begins."
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When the player is able to freely speak with Magolor, such as in Kirby's Return to Dream Land and Team Kirby Clash Deluxe, the character often has one or two hidden lines of dialogue. This is generally found by talking to Magolor seven times in a row. He tells Kirby to stop wasting time and continue with the game, as well as other bits of information.
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Spoiler for Kirby's Return to Dream Land
Magolor appears to be left-handed. He uses his left hand predominantly for gesturing during conversations and picking up the Master Crown in Kirby's Return to Dream Land.
Spoiler for Kirby's Return to Dream Land
Many of the character models and concepts from Kirby GCN’s development cycle were carried over to Kirby's Return to Dream Land. Magolor's first boss form resembles the unused design of Kirby GCN’s final boss. Both have long, sculpted horns; a shadowy face and body; disconnected, floating hands; no visible mouth; glowing eyes; and red clothing. It also appears that this final boss's concept inspired Magolor Soul's design to some extent, as the two share a similar color scheme.
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Spoiler for Kirby's Return to Dream Land
In Kirby's Return to Dream Land’s Extra Mode, if Kirby inhales the enemies that Magolor Soul throws and gets Mix, the outcome will always be the Copy Ability he had to drop at the end of the Magolor EX fight, assuming he lets the Mix roulette run out on its own.
An unused enemy exists in Kirby's Return to Dream Land’s code — Hearbell, a flower-like creature that latches onto or possibly eats Kirby in a similar fashion to Lovely and Rosely.
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In Kirby's Return to Dream Land’s Extra Mode, Magolor mentions how the Lor Starcutter was constructed. He explains that an ancient Halcandran civilization used an extreme power to build it. Magolor also reveals that the ancients used the same power to create "clockwork stars that soar the cosmos" and "mysterious items that can bring dreams to life." These are implied to be Galactic Nova and the Star Rod.
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When Landia, a boss in Kirby's Return to Dream Land, splits into four small dragons, each one's body bears a minor resemblance to Flappy, an enemy in Kirby Air Ride; they both have a small body, disproportionately large head, small tail, wings without arms or hands, blue eyes, and stubby feet with one claw on each. The two are also similar because Kirby rides both of them (however, he only rides Flappy in a screenshot of Kirby GCN).
Kirby's Return to Dream Land consists of approximately 280 rooms (excluding those in special modes).
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The Stomper Boot, an item in Kirby's Return to Dream Land, is similar in function to the Super Mario Bros. 3 item, Goomba's Shoe. The game Super Mario Maker takes note of this; when Costume Mario mounts a Goomba's Shoe while wearing a Kirby costume, he rides it in the same fashion as Kirby riding the Stomper Boot.

Kirby's Dream Collection Special Edition

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Spoiler for Kirby's Dream Land 3, Kirby 64: The Crystal Shards, Kirby: Triple Deluxe
Despite the appearance of blood in both Kirby's Dream Land 3 and Kirby 64: The Crystal Shards, they are rated E instead of the more appropriate E10+. This is due to the fact that E10+ did not exist at the given time. This was fixed in Kirby's Dream Collection Special Edition, where both Kirby's Dream Land 3 and Kirby 64: The Crystal Shards now have an E10+ rating. However, this is not reflected in Kirby: Triple Deluxe, as the game received an E rating despite Shadow Dedede's and Dark Meta Knight's bloodshed.
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On September 1st, 2012, Nintendo hosted an event at PAX Prime in Seattle, Washington. To celebrate Kirby's 20th anniversary, the company wanted to break the Guinness World Record for the most people in a room blowing a chewing gum bubble simultaneously. Altogether, 536 fans showed up to participate, setting the new record.
Kirby's Dream Collection Special Edition released in North America on September 16, 2012. It was the final first-party game Nintendo published for the Wii console, though this distinction is complicated. Pandora's Tower was developed by Ganbarion and published by Nintendo in its Japanese and PAL releases (2011, 2012). It released in North America in April 2013, making its final release more recent, but it was published by Xseed Games in the region. Sin & Punishment: Star Successor was developed by Treasure and published by Nintendo in most regions in 2009 and 2010. It released in the Australasian market in April 2015, so this single release was Nintendo's final time publishing a Wii game. Its final release is the most recent, but it was distributed elsewhere far earlier.
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An icon depicting the Fire ability exists in the code of Kirby's Dream Collection Special Edition. This implies that a Fire Challenge was considered for the New Challenge Stages, but was ultimately unused.

Kirby: Triple Deluxe

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In Kirby: Triple Deluxe, if Kirby loses to a boss several times in a row, the boss's maximum HP will gradually decrease and will attack less frequently. Bandana Waddle Dee also tosses Kirby a Reviving Tomato to carry into the fight. This was done to make boss battles less challenging for inexperienced players.
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In a Behind the Scenes Miiverse post, director Shinya Kumazaki mentions that the Sun Stone items in Kirby: Triple Deluxe contain the power of sunlight, and that a character who "dislikes the sun" may have turned the light into gems in an effort to "rob Floralia of its light." This comment may imply that Necrodeus, the light-hating antagonist of Kirby Mass Attack, is the creator of the Sun Stones.
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Land Barbar, a giant enemy in Kirby: Triple Deluxe, appears to be the largest enemy in the Kirby series thus far.
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In the Kirby's 20th Anniversary puzzle found in Streetpass Mii Plaza, Magolor's sprite depicts him with black skin rather than his usual brown. This sprite, unaltered, was reused for his keychain in Kirby: Triple Deluxe. The balloon sculpture Circus Kirby can make of him also uses black for his facial color. Similarly, Taranza's keychain sprite uses black for his skin color rather than brown.
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Heavy Mole appears as a collectible keychain in Kirby: Triple Deluxe, using its sprite from Kirby: Nightmare in Dream Land. The sprite is missing the small blades on its top, leaving two gaping holes in their place.
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Kirby: Triple Deluxe consists of more than 300 rooms.
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In Kirby: Triple Deluxe, the music that plays in Stage 2 of Lollipop Land (track 22 in the Sound Test), called "Toy Rhythm," was made to feel like NES music. The developers had an NES to use for reference.
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In the Japanese version of Kirby: Triple Deluxe, the words "and more..." appear after the credits end. This is a reference to Milky Way Wishes's credits in the Japanese version of Kirby Super Star and all versions of Kirby Super Star Ultra, which show the same words at the end. When Kirby: Triple Deluxe was localized in North America, the words were changed to "The End."
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When playing the Jukebox in Kirby: Triple Deluxe, red or blue music notes are emitted from the speakers. Tracks with red notes were composed by Jun Ishikawa. Tracks with blue notes were composed by Hirokazu Ando.
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Of all the games in the Kirby series, Kirby: Triple Deluxe has the longest 100% speedrun. The top run was finished with a time of 6:34:42 on December 1, 2018.

Kirby Fighters Deluxe

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Kirby Fighters Deluxe and Dedede's Drum Dash Deluxe are named Kirby Fighters Z and Dedede's Drum Dash Z in Japan. The games' Japanese titles may be inspired by the Dragon Ball Z franchise, though titles ending with the letter Z are not uncommon in Japanese media.

Dedede's Drum Dash Deluxe

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According to director Shinya Kumazaki, the stages King Dedede plays through in Dedede's Drum Dash Deluxe were built by Magolor, as he demonstrated in Kirby's Dream Collection Special Edition that he has experience building amusement parks.
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In Dedede's Drum Dash Deluxe, the stage C-R-O-W-N-E-D (Reprise) was specifically designed in such a way that, if completed on the best route the staff prepared, the player will end with 1:11 left on the timer. This is a reference to Kirby: Triple Deluxe’s Japanese release date: January 11, 2014.

Kirby and the Rainbow Curse

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At the E3 2014 presentation, artwork of four Bandana Waddle Dees was shown during Kirby and the Rainbow Curse’s announcement. One of these colored Waddle Dees, the cyan one, went unused in the final game. Kirby and the Rainbow Curse was likely intended to feature 5-player co-op, a feature in Wii U software that was growing at the time. Based on the cyan Waddle Dee's position in the artwork, he may have been Player 3, making Player 4 yellow and Player 5 green.
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A nautilus-like enemy was shown in Kirby and the Rainbow Curse’s announcement trailer at E3 2014. It was cut from the final game but would have appeared in what looks to be an early version of the stage Kirby Submarine's Torpedo Time.
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Unlike most other Wii U games, Kirby and the Rainbow Curse features 60 FPS gameplay, but deliberately slows down character animations to capture the look of claymation, during cutscenes and in gameplay.
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In Kirby and the Rainbow Curse, it is possible to clear the stage Dig and Dash in less than a minute using a glitch. The Goal is in the first room but is blocked off by a wall. The player must move Kirby to the upper area in front of the wall, then draw a rainbow rope at a steep incline. If he rolls up it at a specific angle while Tap Dashing, he can briefly pass out of bounds, letting him roll atop the wall and into the area with the Goal.
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One music track exclusive to the stage Woodland Battle in Kirby and the Rainbow Curse is titled "Beware the Forest Fungus." This name may be a reference to the most popular track from Super Mario RPG: Legend of the Seven Stars, "Beware the Forest's Mushrooms."
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Character models of King Dedede and Meta Knight exist in Kirby and the Rainbow Curse’s memory, as they have collectible figurines. Unlike other figurine-exclusive characters such as Drawcia, the models are fully rigged and stand in T-poses, suggesting the actual characters were at one point intended to appear in the game.

Kirby: Planet Robobot

The Doctor Copy Ability's physical appearance and pills are a reference to Dr. Mario, a character from the Super Mario series.
The ESP Copy Ability appears to be a reference to Ness, a character from the EarthBound series. The ability references Ness' psychic powers, and the ability hat itself is the same as Ness' hat, albeit with the colors swapped.
On April 26, 2016, the English ROM of Kirby: Planet Robobot was leaked on Reddit. This is the first instance of a Kirby game leaking online before its release in any region.
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The ellipsis punctuation mark is used 101 times throughout Kirby: Planet Robobot.
Kirby 3D Rumble, a sub-game in Kirby: Planet Robobot, appears to be greatly inspired by Nintendo's second attempt at creating the canceled game Kirby GCN.
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The Rainbow Islands make a cameo appearance in Kirby: Planet Robobot. On the title screen, some of the islands (most notably Big Forest) can be made out on Planet Popstar's surface.
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The doodle stickers in Kirby: Planet Robobot may be inspired by the Kirby: Right Back at Ya! episode Cartoon Buffoon, where the residents of Cappy Town are shown to have poor artistic skills when drawing several of the series' staple characters. This possibility is strengthened by the star design on the King Dedede Doodle's crown, as the character Dedede Man in Cartoon Buffoon had such a crown design.
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In Japan, Susie's name is derived from the word digitsuuji in Japanese. This is meant as a reference to the Haltmann Works Company's use of technology as weaponry in Kirby: Planet Robobot. Director Shinya Kumazaki wanted to choose a real woman's name as well. He found that the nickname Susie is frequently used outside of Japan, which coincided with the Haltmann Works Company being foreign to Planet Popstar. Other potential names included Beatrice and Melissa.
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Like most characters, Susie went through many design changes before her appearance was finalized. One piece of concept artwork depicts her as being a feline, with cat eyes, whiskers, and two tails for hair.
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Due to the indirect way Kirby: Planet Robobot delivers the backstory for Susie and President Haltmann, some players noticed a major inconsistency in the game's story following its release. President Haltmann's final lines of dialogue appear incongruous with his behavior the entire game. Players complained about the apparent plot hole. The issue was resolved over two months later through an explanation by director Shinya Kumazaki during the Kirby: Planet Robobot Ask-a-thon event on Miiverse.
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Spoiler for Kirby: Planet Robobot
The cry that Star Dream and Star Dream Soul OS make at the beginning of their third forms includes audio of director Shinya Kumazaki's pet cat Tom meowing. The sounds produced by the weather vanes in the battle against their third forms include audio of real chickens. One member of the sound team keeps chickens at home and recorded them for Kirby: Planet Robobot.
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On July 15, 2017, user MemeXMeme hacked the Kirby: Planet Robobot Behind the Scenes Miiverse community. He posted an offensive video accompanied by the message "ok," which lasted several days before Nintendo deleted it. This is the only time a player has hacked an official Kirby channel.

Team Kirby Clash Deluxe

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The bare minimum number of Gem Apples required to complete Team Kirby Clash Deluxe 100% is 13,441. If the player chooses to only obtain these through the Gem Apple Tree without upgrading it via in-game purchases, this process would take approximately 3 years, assuming the player is diligent enough to harvest almost every 12 hours.
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In the North American version of Team Kirby Clash Deluxe, the first password for the Shrine of Passwords was not discovered until May 3, 2017—three weeks after the game's launch. As reciting a password is required to finish one Heroic Mission, the game was impossible to clear 100% by legitimate means in that time.
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In Team Kirby Clash Deluxe, if the player lets a fight with Colossal Waddle Dee drag on longer than expected, the boss drops its angry expression and waves directly at the screen. This may have been intended as an Easter egg.
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Spoiler for Team Kirby Clash Deluxe
During his second fight, King D-Mind has 62,000 HP. This gives him the highest vitality of any Kirby series boss.
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When Kirby buys all 3,000 Gem Apples from the Shoppe in Team Kirby Clash Deluxe, Magolor laughs to himself, saying that his "secret plan" is closer to completion. If Kirby upgrades all weapons and armor to DX status, Magolor parodies his speech from the end of Kirby's Return to Dream Land, saying that Dream Kingdom will bow to him. He then drops the act and explains that he is only joking.

Kirby's Blowout Blast

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Spoiler for Kirby's Blowout Blast
When Giant King Dedede's Revenge is defeated and the king lands on the platform, he sits with his mouth hanging open. When Giant Masked Dedede is defeated and the king shrinks down, he lies on the ground crying. These are both references to reactions he has at the end of Kirby's Dream Land.

Kirby Battle Royale

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Kirby Battle Royale’s relationship with the Miiverse service is more unique than any other Kirby game's. The North American and Japanese versions never received a community because they released after Miiverse's discontinuation on November 8, 2017. However, the European/Australian version of the game released on November 3, 2017; it briefly maintained a community. This was discontinued after five days. It was Nintendo's shortest-lived, final first-party Miiverse community.
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Kirby Battle Royale is the first Kirby game to be localized into Dutch.
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Nintendo of America offered a free download of the exclusive Kirby Battle Royale: May the Best Kirby Win! theme to anyone who pre-purchased Kirby Battle Royale on the Nintendo eShop. Customers reported that the theme they received called itself by the proper title but was, in actuality, the Kirby: Copy Ability Poll theme; the latter theme was released for free on the game's launch day, making the offer less desirable. The issue was somewhat resolved on January 26, 2018, when Nintendo of America released the theme on the My Nintendo rewards program.
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Concept artwork of the ghost in Kirby Battle Royale depicts it with a bomb for a body, something it does not have in the final game. It may have been planned to detonate after capturing a Kirby.

Kirby Star Allies

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Kirby Star Allies was the first first-party 2D platformer released on Nintendo Switch.
On January 27, 2018, the My Nintendo rewards program released a Kirby Star Allies-themed calendar for the month of February. It was discovered to be a January calendar, as the month had 31 days instead of 28, and Valentine's Day was marked as the second Sunday of the month rather than the second Wednesday. This mistake was corrected shortly after.
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Meta Knight's boss battle in Kirby Star Allies contains Easter eggs. If the player waits for a while at the beginning of the fight without taking the sword provided, Meta Knight begins whistling bits of his own battle theme before eventually initiating the battle. If Kirby floats up to the ledge that Meta Knight is standing on or attacks him with a Copy Ability before the battle, the knight jumps off the ledge and starts the battle himself by frustratedly kicking away the sword.
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When Kirby defeats the first four bosses of Kirby Star Allies, he can throw a Friend Heart at them to positively affect them. King Dedede and Meta Knight are converted into friends, Whispy Woods happily drops dozens of items from his branches, and Pon & Con eagerly open a gate for Kirby to pass through. The latter is required to continue through the game.
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In Kirby Star Allies, Dream Friends were added to the game in waves throughout 2018. Waves 2 and 3 were datamined by Twitter user Reserved on April 29, 2018, revealing the playable characters months before their official announcements.
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The Kirby Star Allies staff had originally meant for Adeleine to be voiced in her appearance as a Dream Friend, and even found a staff member to voice her. This idea was later scrapped.
In Kirby Star Allies, the Dream Friend Adeleine & Ribbon can use the move Ado Painter to produce a painting of the NightMare Enterprises monster Octagon from Kirby: Right Back at Ya!. WolfWrath was originally intended to appear in its place, but this idea never materialized.
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According to an interview, the developers of Kirby Star Allies had originally wanted Drawcia, Elline, Shadow Kirby, Galacta Knight, and other characters to make appearances as Dream Friends in the game. However, they decided to stick with the rules of one character per game and that they would only be from the “core” games of the series, and thus, they left them out.
In Kirby Star Allies, Parallel Dedede's splash screen calls him "Otherworldly Dark Liege." "Dark liege" is a figurative way of saying "foolish/incapable liege" in Japanese and Chinese literature.
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As seen in concept artwork, one of Como's Friend designs in Kirby Star Allies was intended to resemble the Kirby: Triple Deluxe villain Taranza.
Despite their name, it is heavily implied that The Three Mage-Sisters are not actually siblings. It is likely that “sister” is used in the religious term, which is typically used to refer to nuns, as they are priestesses of the Jambastion Religion. In Heroes in Another Dimension, Francisca refers to Flamberge as “Ms. Flamberge,” in which it is normally unusual for siblings to use prefixes for each other. in the Japanese version of Kirby Star Allies, none of them refer to each other with honorifics that are normally used for siblings.
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Magolor is the first character to have his name misspelled in a Kirby game. One of his attacks in Kirby Star Allies was meant to be called “Magolor Surge,” but was misspelled as “Magalor Surge.” His name was previously misspelled as “Magalor” in the title of his video showcase on the official Nintendo YouTube Channel, in which it is titled as “Kirby Star Allies Wave 3 Update – Magalor is here! – Nintendo Switch.”
The model for Hyness is located with the other playable characters of Kirby Star Allies, and he has different, unused colored textures that have the same color scheme as characters when in the Player 2, Player 3, and Player 4 slots as well. He also has different eye expressions that are not used, but match those of other playable characters. This may imply that Hyness was originally meant to be a Dream Friend in one of the updates, but was scrapped later on.
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Spoiler for Kirby Star Allies
Kirby Star Allies has the most misinterpretations and non-censoring alterations out of any English localization of the text and dialogue of a Kirby game to date. Some examples include replacing the mentions of Hyness’s clan with an ambiguous “we,” removing the statement that they were once friends with the people who banished them, misinterpreting most of the parallel bosses’ origins, removing two lines of text in Void Termina’s second phase’s Soul Melter EX description, and stating that Susie is still mechanizing planets and people in her Guest Star description.
Spoiler for Kirby Star Allies
Kirby Star Allies is the most heavily censored Kirby game to date, due to religion being one of its main themes, and thus having religious concepts that could potentially cause controversy. Some examples include changing “God” to “Dark Lord,” changing “Prayer Song to God” to “Song of Supplication,” heavily altering the lyrics of the Song of Supplication and those found in Void Termina’s pause descriptions, heavily altering Morpho Knight’s pause description, and changing various boss titles (e.g. Hyness’s was originally “Demon General,” but was changed to “Officiant of Doom”).
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Spoiler for Kirby Star Allies
Void Soul is the only character in the Kirby series to debut as a true final boss but have the title usurped by another boss at a later date. This is due to the way Kirby Star Allies had content patched in after launch, something rarely done in the series. No other Kirby game has added bosses in updates.
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Spoiler for Kirby Star Allies
Void's battle theme is the longest music track in the Kirby series, lasting roughly about six minutes and twelve seconds before looping. The 8-bit rendition of Green Greens begins roughly four minutes and 27 seconds after the new segment of the theme begins, possibly as a reference to Kirby's Dream Land’s initial release date: April 27, 1992.

Kirby's Extra Epic Yarn

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If one excludes 3D Classics: Kirby's Adventure, Kirby's Extra Epic Yarn is currently the only Kirby game released after Kirby's Return to Dream Land that does not draw from the latter's creations.
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The sub-game Dedede Gogogo appears to be largely based on Poochy Dash, a runner mini-game added as Nintendo 3DS-exclusive content in Poochy & Yoshi's Woolly World. The aforementioned game and Kirby's Extra Epic Yarn were both developed by the company Good-Feel.
Two furniture items in Kirby's Extra Epic Yarn reference the Kirby Café, a Kirby-themed restaurant in Japan: The Neon Café Sign appears to be inspired by the café's art style, and various menu items are shown by the Dish of the Day.
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On March 12, 2019, Nintendo released a Kirby's Extra Epic Yarn wallpaper, titled "Wallpaper 1 - Kirby's Extra Epic Yarn," on the My Nintendo rewards program. The preview image erroneously included a logo for the game Fortnite. The reward was quickly discontinued and replaced with a corrected version.

Super Kirby Clash

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During the design process for Super Kirby Clash, two possible names for the boss Mr. Floaty included "Mr. Moisty" and "Mr. Wetty." The final name was chosen because it conveyed his swimming ability.
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The villain of Super Kirby Clash, Parallel Nightmare, is voiced by prolific voice actor Banjo Ginga. Ginga had previously voiced Nightmare (or eNeMeE) in the Japanese version of Kirby: Right Back at Ya!. This marks a technical ten-year reprisal since Kirby 3D and a technical sixteen-year reprisal since the end of the anime.
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Parallel Nightmare, the villain of Super Kirby Clash, contains several Nightmare-related references in his moveset and animations. His attacks are primarily adapted from Nightmare's final boss fight in Kirby's Adventure/Kirby: Nightmare in Dream Land; the move where he barrages the stage with stars from the background is inspired by the cutscene before the Nightmare Wizard battle, where he knocks Kirby off the Warp Star. Starting in The Empyrean, he gains the power to cast balls of energy and blast beams from his palms. These are taken from his battle in Strato Patrol EOS, a sub-game in Kirby Mass Attack. Parallel Nightmare's half-health and final defeat animations are also pulled from Nightmare.
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After defeating Super: Pres. Parallel Susie in Super Kirby Clash, Parallel Susie appears in the Castle Village, seated atop the Shoppe's awning. This may be inspired by a piece of artwork celebrating the first anniversary of Team Kirby Clash Deluxe, as it shows Parallel Susie sitting atop the awning's right side as well.
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While the rest of the stickers in Super Kirby Clash use artwork and sprites from other games and media, Hyness is the only character whose sticker is technically new, as while it does use his render from the 100% completion picture for Heroes in Another Dimension, Francisca was originally in front of him and parts of him were cut off by the border of the picture, essentially making it a new render made just for the sticker.
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Super Kirby Clash is the first Kirby game to have a lyrical song with vocals, with the aforementioned song being the credits theme, "Green Tree Memories from Kirby."

Kirby Fighters 2

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Kirby Fighters 2 was leaked on Nintendo's Play Nintendo microsite on September 22, 2020. The Game Finder application briefly listed it among games for Nintendo Switch, with its icon, description, and MSRP. This makes Kirby Fighters 2 the first Kirby game to be leaked before its official reveal.
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Kirby Fighters 2 is the first Kirby game to be developed and released during the COVID-19 pandemic. The development team could not communicate with each other in person due to their remote work environment. They had previously worked together on Super Kirby Clash, so they were familiar enough that no communication issues or major problems arose.
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Kirby Fighters 2 is the first Kirby game since 2005's Kirby: Canvas Curse to feature only one Stone transformation. As one of Gooey's attacks, it hearkens back to Stone's only form in Kirby's Dream Land 3.

Super Smash Bros. series

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Kirby has debuted on several consoles through the Super Smash Bros. series before his own games, excluding Virtual Console re-releases. He joined the roster in Super Smash Bros. on the Nintendo 64 in 1999, one year before Kirby 64: The Crystal Shards. He appeared in Super Smash Bros. Melee on the Nintendo GameCube in 2001, two years before Kirby Air Ride. He appeared in Super Smash Bros. Brawl on the Wii in March 2008, over two and a half years before Kirby's Epic Yarn. He appeared in Super Smash Bros. for Wii U on the Wii U in November 2014, two months before the Japanese launch of Kirby and the Rainbow Curse.
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King Dedede was intended to appear as a playable fighter in Super Smash Bros., but was taken out due to time constraints and memory limitations. He was also intended to appear as a fighter in Super Smash Bros. Melee, but was omitted because Masahiro Sakurai did not want to over-represent the Kirby franchise at the time.
The Fountain of Dreams appears as a stage in Super Smash Bros. Melee. The music here is an orchestral remix of Gourmet Race's theme. This rearrangement was used in Kirby: Nightmare in Dream Land during the battle against King Dedede, and has since been recognized as the fountain's theme. Kirby: Nightmare in Dream Land was most likely in development during the creation of Super Smash Bros. Melee, and so the fountain's music was added as a teaser for the upcoming Game Boy Advance game.
In Super Smash Bros. Melee, Kirby's down-special move (Stone) can transform him into, among other things, a Thwomp from the Super Mario series. The Stone's design is based on Thwomp from Super Mario 64. The Stone's design was not updated for Super Smash Bros. Brawl despite the fact that Thwomp's design had drastically changed several years before the game's release. The Stone's design was later updated in Super Smash Bros. for Nintendo 3DS and Wii U to reflect Thwomp's New Super Mario Bros. U appearance.
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A common misconception among fans is that Meta Knight's dark coloration in Super Smash Bros. Brawl (which also appears in successive Super Smash Bros. games) is based on Dark Meta Knight. This was disproved by the Dark Meta Knight coloration present in the latter games. Meta Knight's dark gray and black palette is based on his Kirby's Adventure artwork.
The Halberd in Super Smash Bros. Brawl is adorned with many guns. A total of 150 (including the Combo Cannon's twin guns) cover the battleship's exterior.
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Masahiro Sakurai has stated that the Smash Run mode in Super Smash Bros. for Nintendo 3DS was inspired by Kirby Air Ride’s City Trial mode.
A stage based on Kirby's Epic Yarn was planned for Super Smash Bros. for Wii U. Yoshi's Woolly World was in development for Wii U at that time, however, so director Masahiro Sakurai changed the stage's theme to be more relevant.
In Super Smash Bros. for Nintendo 3DS and Wii U, when Kirby copies a Yoshi's ability, Kirby will lay eggs that correspond to that Yoshi's color. For example, if Kirby inhales a red Yoshi, he will produce red eggs.
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Before Nintendo formally announced the inclusion of The Great Cave Offensive stage in Super Smash Bros. for Wii U, the company's Facebook page leaked an image and teaser description of it. On October 5, 2014, Nintendo posted a weekly wrap-up highlighting the biggest updates announced in the last seven days—among these was an image of Kirby and Pikachu riding in a Mine Cart. This image was never revealed prior to the post.
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In the Super Smash Bros. Ultimate World of Light opening, when Kirby escapes Galeem's light beams, the Warp Star and its rider vanish in a ring of star shapes after flying straight forward for an extended period of time. The ring effect is the same one that appears in various cutscenes throughout the Kirby series. The previous assumption among players was that this effect was merely an exaggerated visual indication of the Warp Star flying out of view; Super Smash Bros. Ultimate suggests that it is actually Kirby warping to another location.
In Super Smash Bros. Ultimate, the reason Kirby was chosen to be the only character to survive in World of Light was due to his Warp Star’s ability to defy physics and warp, and thus escape Galeem's universe-wide attack. Other characters that could have survived were Palutena and Bayonetta; Kirby was chosen because he has been a character since Super Smash Bros. and is simple to play as compared to the other two.
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Without being told who the DLC fighters were, voice actress Makiko Ohmoto figured out Terry's inclusion in Super Smash Bros. Ultimate based on the two lines she voiced for Kirby's Terry ability ("Power Wave!" and "Rock you!"). She recalled playing Fatal Fury with her younger brother and quickly guessed that Terry was being added to the game.

Cancelled Games

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According to ex-DMA developer Mike Dailly, the gameplay of the unreleased Kid Kirby would have used the Super NES Mouse to click and drag to stretch Kirby out, then launch him to progress in the level, in a manner similar to Angry Birds. The game was cancelled by Nintendo due to years of unproductive development - the poor sales of the Super NES Mouse outside of Intelligent Systems' Mario Paint also may have had an impact on its cancellation.
Due to misinformation spread on various video game websites, it was believed that Hard Hat, a boss from the Game Boy game Donkey Kong Land, was intended to appear as an enemy in the cancelled SNES game Kid Kirby. This inaccuracy lasted for seven years before coming under scrutiny.
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Kirby Family was a cancelled Game Boy Color game that, when connected to a Jaguar sewing machine, produced Kirby-themed embroidery patterns. Its final build leaked online on September 9, 2020, making it the only cancelled Kirby game to do so.
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Kirby Tilt 'n' Tumble was planned to have a sequel for GameCube. It would have used the Game Boy Advance as a controller, making it the only GameCube title to do so. It was eventually retooled into a completely different game called Roll-o-Rama before being quietly cancelled.
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The Kirby GCN game that was shown off at E3 2005 was actually one of three lost Kirby games, all completely built from the ground up. Eleven years were spent creating and abandoning these projects. In the end, the first of them was reworked into Kirby's Return to Dream Land.
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In the Kirby's Dream Collection Special Edition art booklet, concept art for an unknown knight was shown. Due to it being in Meta Knight’s section, many believed it to be a beta design for Meta Knight. However, in a Nintendo Dream interview, Shinya Kumazaki stated that it was actually a completely different knight that would have appeared in the cancelled Kirby GCN. The design would later be used for Morpho Knight in Kirby Star Allies, albeit with a slightly different sword.
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In the trailer for the cancelled Kirby GCN, an unnamed enemy that bore a striking resemblance to Pluid, an enemy in Kirby's Return to Dream Land, was shown. However, this enemy was composed of three separate beings, and they had eyes similar to those of Kirby’s. It is unknown if this enemy was an early version of Pluid, or if the similarities are coincidental.
End of spoilers
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