Justice League Unlimited

S01E10: Dark Heart

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.

Overview

The galaxy's most powerful superheroes return to battle the allied villains and criminal plots that endanger the universe.

Episodes

Initiation

S01E01 Initiation

July 31, 2004 6.2 23 min
After unsuccessfully attempting to recruit the Green Arrow to join the expanded League, he plays an important role with a team sent to manage a crisis in Asia.
For the Man Who Has Everything

S01E02 For the Man Who Has Everything

August 7, 2004 7.2 23 min
Batman and Wonder Woman find Superman immobilized in the Fortress of Solitude by a plant sent by the would-be conqueror Mongul.
Kid Stuff

S01E03 Kid Stuff

August 14, 2004 7.8 23 min
Morgaine Le Fey transforms Superman, Batman, Wonder Woman, and Green Lantern into children after Mordred uses his magic to remove all adults from Earth and keep children on the Earth.
Hawk and Dove

S01E04 Hawk and Dove

August 21, 2004 7.2 23 min
Ares creates a war machine called the Annihilator to escalate a civil war in Kasnia. Hawk, Dove, and Wonder Woman try to stop his plans.
This Little Piggy

S01E05 This Little Piggy

August 28, 2004 7.7 23 min
When Circe changes Wonder Woman into a pig, Batman and Zatanna must find her and change her back.
Fearful Symmetry

S01E06 Fearful Symmetry

September 4, 2004 6.3 23 min
Supergirl, Green Arrow, and The Question investigate Supergirl's disturbing dreams. They discover that Cadmus created a clone of Supergirl named Galatea while she was recovering from her fight against Superman on Earth.
The Greatest Story Never Told

S01E07 The Greatest Story Never Told

September 11, 2004 6.3 23 min
The Justice League battle Mordru in the background, while the narrative follows Booster Gold as he attempts to close a walking black hole while he's supposed to be on "crowd control".
The Return

S01E08 The Return

September 18, 2004 6.8 23 min
After blasting through the entire Green Lantern Corps, the android Amazo returns to Earth. Only the Justice League stands between him and his goal -- the now-reformed Lex Luthor.
Ultimatum

S01E09 Ultimatum

December 4, 2004 6.5 23 min
A team of too-good-to-be-true superheroes find out the truth about their origins and go on the rampage.
Dark Heart

S01E10 Dark Heart

December 11, 2004 5.8 23 min
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.
Wake the Dead

S01E11 Wake the Dead

December 18, 2004 8.7 23 min
A trio of high school kids accidentally resurrect Solomon Grundy, reviving him more powerful than ever but with no memories of his past. Dr. Fate, Amazo, Aquaman, and Shayera assist League regulars stopping his rampage.
The Once and Future Thing (1): Weird Western Tales

S01E12 The Once and Future Thing (1): Weird Western Tales

January 1, 2005 6.3 23 min
While pursuing a time traveling thief, Batman, Wonder Woman and Green Lantern team up with a collection of DC Universe western heroes to battle the villain controlling him.
The Once and Future Thing (2): Time, Warped

S01E13 The Once and Future Thing (2): Time, Warped

January 29, 2005 7.0 23 min
The time traveling League team goes to the future to team up with that time's League to battle Chronos who rules.

Cast

Kevin Conroy
Kevin Conroy
Batman (voice)
George Newbern
George Newbern
Superman (voice)
Susan Eisenberg
Susan Eisenberg
Wonder Woman (voice)
Carl Lumbly
Carl Lumbly
J'onn J'onzz (voice)
Phil LaMarr
Phil LaMarr
Green Lantern (voice)

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