Guy with a potato is a super-hero on Earth. However, he is not a good super-hero nor member of Evil Leage of Evil Super Heroes.
He has a potato. No more else is know about him.
In "Two Guys and A Potato", he teamed up with Dark Stallion to destroy the horrible monster "Davnkios", that was created by ELESH. However, he never joined again to Dark Stallion in the fight against evil, and he is just hanging around with his potato.
General Kader Bard never trusted on him. Guy with a potato dislikes ELESH, stating "There can not be evil superheroes... they must be supervillains. Do not you think?". Sometimes he refers himself as "The friendly villain".
Many sources tell he is the most dangerous one.