In the original, he takes the appearance of a white-sclera eye with a circular purple iris and a circular dark purple pupil; in the follow-up, his appearance gets changed to that of a lemon-like appearance with a yellow-sclera eye and a horizontal goat-like black pupil. Whenever he shows up in a level, a loud thunderous noise can be heard as long as his eye is visible.
Mr. Super's origins are not certain, but it is implied in the Memory Book that he has a strange connection to the main protagonists, Yeah, Jam, and Fury, who all vaguely recall being young. The three remember a voice accompanied by the word "Super" giving them the aliases of Mr. Fabricate, Mr. Navigate, and Mr. Eradicate, respectively, as if to change what they know. After encountering Mr. Super for the first time, they find the experience familiar and hear the words "Mr. Super Is Always Watching".
Role in the Yeah Jam Fury series
In both games, there is a 10% chance for Style-themed levels to instead start as Horror-themed, in which the normal music is replaced with a more eerie track and the aesthetic becomes more normal. In this theme, Mr. Super appears in the background as a giant shaky eye that looks from side to side before closing his eyelid and disappearing, only to repeat the process after a few seconds.