Plasma and Spark are sometimes seen as interchangeable, as Spark had later begun exhibiting properties previously seen only in Plasma. In the anime series, Spark Kirby uses long distance attacks like Plasma's energy blasts. In Kirby: Squeak Squad, Spark allows Kirby to charge up his attacks, and after obtaining the Ability Scroll, he can fire a long-range attack in addition to creating a barrier due to the charge. Spark is considered to be Plasma's answer to more defensive abilities like Needle or Freeze. Their own ability caps also had very similar designs, implying a larger connection. In Kirby's Return to Dream Land, Plasma's moves from Kirby Super Star were fully integrated into Spark, effectively merging the two abilities. Despite this, however, Plasma returns in Kirby Star Allies, as opposed to Spark.
In earlier appearances, this ability didn't create a field of electricity but rather shot small, exploding blasts of electricity from Kirby (or Sparky). Since Kirby's Dream Land 3, it was changed into a shocking force field, sometimes with sparks trailing across the ground.
In Kirby's Dream Course, Spark is the most powerful offensive ability, as it is the only means of defeating Whispy Woods and Kracko. However, it has no effect against Gordo. Some holes are designed to be very difficult if Kirby cannot smash through multiple Whispy Woods in his path. Unlike other abilities in the game, it does not modify Kirby's movement or speed at all.
Kirby immediately stops and projects an electric shield around him. This will block most projectiles.
Kirby can move slowly while spark is active. While moving, its range decreases.
Equivalent of Plasma Barrier. As long as Kirby has enough Charge Power, a shimmering electric shield surrounds him, protecting him against enemies and projectiles by dealing damage to them. It is even more powerful than Plasma's version, as this time he is completely invulnerable to enemies, even if he runs into them quickly. It does not protect against certain hazards, such as spikes and falling rocks. Damage weakens the shield, and it disappears if Kirby uses any of his attacks. Maximum charge gives Kirby a shield as large as his basic Spark Attack, which makes offensive use easier since he can now effectively move around with the same effect.
Projects a vertical thunderbolt upwards from Kirby's hat. Works like Needle + Spark. This attack has nearly infinite range in Kirby's Return to Dream land, but has very limited range in Kirby: Planet Robobot.
(midair) ↓ + B/1
Projects a vertical thunderbolt downwards. Like Thunderbolt, this attack has nearly infinite range in Kirby's Return to Dream land, but has very limited range in Kirby: Planet Robobot.
Kine sticks a light bulb out from his mouth and is free to move about as normal, although he cannot turn. This power will light up dark areas, and when B/Y is released create an explosive projectile. In the sequel it will not launch off, but after a while, will explode in Kine's mouth.
In Kirby: Right Back At Ya!, Kirby has green skin. The crown is changed slightly to just a round blue orb in a simple circlet. It also becomes more of a long-distance defense move like Plasma, with Kirby launching orbs of crackling energy and shooting electric beams at his foes. He also retains the ability to sprout electricity from his body exactly like in the games. In the transformation sequence, the orb slams onto Kirby's forehead. The top of his head catches on blue fire. The blue fire disappears as soon as the blue sparks appear and Kirby turns green. Spark is one of two abilities in the anime to successfully defeat a threat every time Kirby uses it (the other being Crash).
Curiously, the Spark ability was not used in the anime until the end of the show's run. By that time, Kirby: Nightmare in Dream Land was over a year old. It is likely that Spark Kirby's anime design was finalized before the game was released and long before it was featured in any episodes.
In Kirby: Triple Deluxe, the electricity on Spark's hat solidifies.
More enemies yield the Spark ability than any other Copy Ability in the series, with a total of 18 (12 enemies carry the ability themselves, six shoot projectiles that carry the ability).
The flavor text for Spark in Kirby: Triple Deluxe references the fact that Spark's moveset has been merged with that of Plasma.
Spark's appearance in Kirby's Dream Land 2 is very similar to the Kirby on the cover of Kirby's Block Ball.
Kirby of the Stars Copy Ability "Spark" Introduction Video