Poster of Cast and Crew in Justice League Unlimited - Dark Heart (Season 1 - Episode 10) - Dark Heart

Justice League Unlimited - Season 1 - Dark Heart (Episode 10)

Plot: Most of the League battles with powerful alien nanotechnology but, realize that the waves of self-replicating robots cannot be simply destroyed. The diminutive Atom shrinks himself to stop the robots from the inside
Episode Aired On:
Saturday, December 11 2004
20 years ago