Where To Stream Justice League Unlimited Season 1 Episode 10
Dark Heart
- Aired December 11, 2004
- 30 Min
- Rated 8.2
- Number 14 Of 39 Rated Episodes
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.