SpongeBot SquareBolts

SpongeBot SquareBolts is a robot fry cook toiling away at a fast-food grease pit, a clanking parody of a certain porous yellow icon. He scrubs, flips, and grins through his shift with the same manic, unkillable cheer, oblivious to how absurd his tiny pants and square bolts look on a robot body.

He works because Futurama commits fully to the bit: the show doesn't wink at the parody, it just drops a deadpan robot version of a beloved cartoon sponge into its world and lets the collision of universes do the joke. Billy West's chipper vocal delivery sells the character's blissful unawareness perfectly.