Boros  was the leader of the Dark Matter Thieves, a group of alien invaders. Boros faced a self-imposed existential crisis, having become so powerful that no battle thrilled him. His intergalactic travels in search of a worthy opponent led him to Earth. Boros was a very tall cyclops-like alien with light-pink, spiky hair and bangs that fell over his face. Because of his incredible power, Boros was both arrogant and prideful. He roamed the universe looking for worthy opponents.