Disco Lemon
Disco Lemon's original portrayal
Disco Lemon is, simply put, a lemon who likes to dance. Disco Lemon is typically portrayed as an anthropomorphic lemon with legs (and arms which come out of his side if needed), and typically, sunglasses and an afro. His real name is apparently Trevor, according to his first game.
He is often associated with Martini Turtle and Ghost Shark, as both are similarly structured. He is often targeted by either of the two--in one game, Martini Turtle spikes Disco Lemon's drink in hopes of getting him too drunk to dance/date rape, in another, Ghost Shark and him have a fight. Disco Lemon also has an evil twin named Hobo Lime.
Examples of Disco Lemon games: