Steel wears a big suit of armor with a red cape and a Kryptonian S-shield embossed on its chest. The armor covers his entire body, but his face plate has etched facial features. His right forearm is equipped with a wrist-mounted gun.
Steel arrived with Jefferson Pierce for the emergency Justice League meeting that had been called. He attended the meeting silently, and when Batman and other Leaguers resigned, he stayed behind with the League.
In the comics, John Henry Irons, a brilliant weapons engineer, created and donned a suit of powered armor in Superman's memory to fight crime.
This is Steel's sixth animated appearance. He previously appeared in the DCAU (Superman: The Animated Series and Justice League Unlimited), Justice League: The New Frontier, Justice League: Throne of Atlantis and some of its sequels, Justice League: Gods and Monsters and Teen Titans Go! To the Movies, as a cameo.