Captain Ego is the leader of the superhero faction of Superzone, a world full of superheroes. It was revealed that Ego is scared of heights, despite being able to fly. His arch-enemy is Jacko Lantern, leader of the super-villains. Captain Ego is presumably a parody of Captain America. Unlike the rest of the Superzone, who have odd skin colors, he appears truly human, but it's likely his internal physiology is even weirder.