Slippy is a frog head with an orange top with a yellow belly. He has two small eyes and small, straight-positioned feet.
Slippy comes in other colors, such as magenta, green, red, or blue.
Slippy debuted in 1993 video game Kirby's Adventure, he is first encountered early in the game during Vegetable Valley. He tends to hop toward Kirby when on land or swim toward him when underwater.
Slippy is found on the top stage of Whispy Woods Land. He mostly hops around on a small platform toward the top of the screen. Behind him is an item: an Apple, an Invincible Candy, or a Maxim Tomato. If Kirby defeats all the Cappies, a Warp Star will appear behind him instead. Kirby must hit the Warp Star quickly if he wants get to Whispy Woods, as the star will eventually disappear. Hitting Slippy will earn the player 3000 points.
Sir Slippy appears with a slight redesign, but its behavior hasn't changed since Kirby's Adventure.
- Slippy's name may be a reference to the character Slippy Toad from the Star Fox series, which also debuted in the same year and they are both frogs.
- His artwork in Kirby's Adventure and Kirby's Block Ball depict it smiling, while his current artworks however depict him with a more frog-like expression.