A mutant with the body of a couch and the head of a sloth. He is always in the forest, as he is too lazy to walk, and if he needs to do something, he will often get other mutants to do it for him.
Entree encountered him while searching for help for Peri. He mistook this mutant as a couch in the forest. The Slouch Potato encouraged Entree to be lazy, which eventually led to him becoming so lazy that he refused to move (which in turn led to Entree growing roots). Later on in the episode Roots, Slouch Potato was eaten by the viscious Wunny Sharbit.
Slouch Potato was voiced by Howard Jerome.