Bodybuilder

 The bodybuilder' appeared in the episode "Rigby's Body." He is a pink consciousness who was once a human that was bodybuilding too hard. His friend told him that if he kept pumping iron like that his body would quit on him (which it did). Eventually, his body quit on him and he didn't find it in time and had to take the form of a basketball. When he made contact with Rigby, he steals his body. Later, Rigby catches the Bodybuilder and fights with him. Skips drove the golf cart into Rigby's body which sent the Bodybuilder's consciousness into a slide, taking form of it. He gets disgusted that his mouth was open when a fat kid slid on him.''

Quotes
"Aw, man! My mouth was open!"

"So long, suckers!"