Slippy

Slippy appears in Meme Cemetery. One of the quests in the level includes giving Slippy a heart. Doing so makes Slippy appear to give the player a bounce, which is needed to advance.

Slippy's grave can also be seen in PewDiePie's room a cutscene art.

Behind the Scenes

 * Slippy was a toad owned by PewDiePie who died in 2017. He was added to the game due to being a popular request.
 * Slippy and Stefán Karl Stefánsson are both real people/animals who died before the creation of the game.