Mano is from the planet Angtu, which he destroyed in both pre- Zero Hour and post-Zero Hour using his "anti-matter touch". His planet's atmosphere is hostile to most living things, and he must wear an environment suit to breath the air on foreign worlds. The dome on his head blocks out his face, so his face is only seen as a silhouette. He is a member of the Fatal Five and is considered one of the most powerful villains in the galaxy.
Other media appearances
Justice League Unlimited
He appears with the Fatal Five in the episode "Far From Home" battling Green Arrow, Captain Atom, Supergirl, and the Legion of Super-Heroes.