The Atom (DC Animated Universe)

Ray Palmer was an accomplished scientist and expert on nano-technology. He joined the expanded Justice League after the Thanagarian invasion of Earth, and served as its top engineer with Steel.

As the foremost expert on nanotechnology, Atom assisted the League in repelling Amazo in his revenge towards Lex Luthor. He was, however, little successful, as he was not the League's strongest member.

He almost singlehandedly defeated the Dark Heart, a alien nanotechnological war machine that could devour anything in its path. Shrinking to subatomic size, he entered the core and gave the Dark Heart a "heart attack" by obstructing the path of the fluids going to the heart.

He is voiced by John C. McGinley.