Mr. Key

Mr. Key is the star of the 10ish JUMPS series and its spinoffs.

Mr. Key is basically a key object foundable in the gameplay tools, except wired in a way that he is not collectable. Except for this small change, he also has a mouth, two eyes, and is stickered all over with pinata stickers. His first appearance was in the cult-classic level LBN SACKQUEST: 10ish JUMPS CAN U MAKE IT made by CogMonkey and Dragonvarsity, and has had various continuations and spin-offs, most notable being Pulparindo15's Mr. Key Inc, where he runs a factory making player hearts. In CogMonkey's level and it's sequels, he is depicted as a heart-for-hearting newbie, who scams other creators into hearting him, whilst Mr. Key himself doesn't heart them back. Instead, he locks everyone up in a cave.

Later in the series, the player gets stuck inside the stomach of Mr. Key's pet worm Hefvfdgdsr. Inside, Sackboy has to confront Mr. Key, who has turned into Mr. Keyvil. This results in a boss battle and Mr. Key is defeated, Craftworld being safe from Mr. Key's scamming practices.

Appearences
LBN SACKQUEST: 10ish JUMPS CAN U MAKE IT (official)

LBN SACKQUEST: 10ish JUMPS PART 2 (official)

LBN SACKQUEST: 10ish JUMPS PART 3 (official)

Mr.Key Inc. (fan-made)