Episode 1
Aired Nov 17, 2001
Secret Origins
When an ancient alien horde escapes from its prison on Mars and infiltrates Earth, Batman and Superman join forces to investigate the threat; mysterious psychic attacks lead Superman to discover an alien prisoner unlike all the others.
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Episode 2
Aired Nov 17, 2001
Secret Origins
Superman and Batman escape with Martian J'onn Jonzz and meet fellow superheroes Green Lantern, Hawkgirl, the Flash and Wonder Woman; the new team flies off to stop alien factories from creating a planet-wide shroud intended to block the sun.
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Episode 3
Aired Nov 17, 2001
Secret Origins
With the alien invasion nearly complete, the heroes attempt to free Superman and Hawkgirl from an alien facility, but fall into a trap; the alien leader, known as the Imperium, arrives and comes face to face with J'onn J'onzz.
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Episode 4
Aired Nov 19, 2001
In Blackest Night
The Justice League fights a group of robots called Manhunters who demand Green Lantern John Stewart's surrender until John suddenly agrees to go willingly; the League follows John to an interplanetary tribunal and learns the grim charges against him.
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Episode 5
Aired Nov 26, 2001
In Blackest Night
Flash acts as Green Lantern's defense to stall the tribunal's decision until the Justice League can find evidence that proves he did not destroy the planet; the investigation uncovers a plot devised by the Manhunters to take over the galaxy.
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Episode 6
Aired Dec 3, 2001
The Enemy Below
After soldiers from Atlantis capture a U.S. submarine, the League works with Aquaman to seek a peaceful solution to the surface world's exploitation of the oceans; an assassin injures Aquaman during his visit to the surface.
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Episode 7
Aired Dec 10, 2001
The Enemy Below
Aquaman's evil half-brother, Orm, seizes control of Atlantis and prepares to wage war against the surface; Aquaman makes a personal sacrifice to save his son; the League must stop Orm's plot to melt the Arctic ice cap and flood the entire world.
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Episode 8
Aired Jan 21, 2002
Paradise Lost
Wonder Woman returns to her island home of Themyscira only to discover a powerful sorcerer named Felix Faust has turned her mother and her Amazon sisters into stone; she agrees to retrieve an ancient relic in exchange for their lives.
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Episode 9
Aired Jan 28, 2002
Paradise Lost
Wonder Woman and the rest of the League discover the true purpose of the relic pieces Felix Faust asked them to gather and head to Themyscira to stop him from unleashing a powerful, sinister being from the underworld.
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Episode 10
Aired Feb 23, 2002
War World
When a mission in space goes awry, intergalactic slave traders take Superman and J'onn to a planet called War World, where the dictator Mongul forces Superman to fight in gladiator-type games; Hawkgirl and Green Lantern follow their trail.
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Episode 11
Aired Mar 3, 2002
War World
Superman refuses to finish off his opponent, Draaga, gaining favor with the citizens of War World and drawing Mongul's fury; Green Lantern and Hawkgirl cross paths with Draaga during their search; Mongul decides to fight Superman himself.
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Episode 12
Aired Mar 10, 2002
The Brave and the Bold
Flash and Green Lantern team up when research scientists attempt to steal radioactive isotopes and later claim to know nothing of their actions; the heroes' investigation leads to a fugitive from a hidden society of intelligent gorillas.
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Episode 13
Aired Mar 17, 2002
The Brave and the Bold
Grodd brainwashes everyone in Central City and launches nuclear missiles from a military base with the intent to destroy Gorilla City; the League races to stop the missiles while Flash and Solovar fight Grodd.
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Episode 14
Aired Apr 7, 2002
Fury
Wonder Woman and Hawkgirl team up to stop a renegade Amazon who takes over Lex Luthor's old gang and plans a deadly viral attack.
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Episode 15
Aired Apr 14, 2002
Fury
The League races to stop a renegade Amazon before she can infect the entire world with a deadly virus, but the male Leaguers fall one by one, leaving Wonder Woman and Hawkgirl to put an end to the Amazon's vendetta with Hippolyta's help.
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Episode 16
Aired Apr 21, 2002
Legends
An explosion from a giant robot throws Green Lantern, Flash, Martian Manhunter and Hawkgirl into an alternate reality, where they meet their counterparts, the Justice Guild of America.
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Episode 17
Aired Apr 28, 2002
Legends
Hawkgirl discovers the grim fate of the real Justice Guild and investigates the truth of the alternate reality with Green Lantern; the heroes tangle with the Injustice Guild, but the true threat lies within their own ranks.
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Episode 18
Aired Sep 6, 2002
Injustice for All
After being diagnosed with an incurable case of kryptonite poisoning, Lex Luthor blames Superman and seeks to destroy the superhero and the rest of the Justice League by gathering a team of powerful supervillains.
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Episode 19
Aired Sep 13, 2002
Injustice for All
Captured by Luthor's Injustice Gang, Batman must find a way to contact the League; Shade, Star Sapphire and Solomon Grundy plant a bomb on the Watchtower; Luthor's condition worsens while Joker goes behind his back to eliminate Batman.
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Episode 20
Aired Sep 20, 2002
A Knight of Shadows
An immortal man named Jason Blood asks the Justice League to help him stop sorceress Morgaine Le Fay from finding the legendary Philosopher's Stone and using its power to take over the world.
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Episode 21
Aired Sep 27, 2002
A Knight of Shadows
Undaunted after the League gains possession of the Philosopher's Stone, Morgaine Le Fay tempts J'onn to steal it for her by promising to restore his long-dead civilization; Etrigan and the League fight against Morgaine's magic to stop their friend.
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Episode 22
Aired Oct 4, 2002
Metamorphosis
Green Lantern investigates a train derailment caused by illegal chemicals and reunites with former Marine Rex Mason, whose knowledge of the crime and attraction to his boss' daughter make his employer furious enough to turn Rex into his test subject.
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Episode 23
Aired Oct 11, 2002
Metamorphosis
Rex, now the mutant Metamorpho, uses his new elemental powers to fend off the Justice League, but soon discovers that his boss manipulated him into fighting; Metamorpho takes revenge on his boss but accidentally unleashes a massive, violent creature.
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Episode 24
Aired Nov 9, 2002
The Savage Time
When the League returns to Earth and discovers the ruthless, immortal dictator Vandal Savage in control of the entire planet, they must travel back in time and stop him from using advanced technology to win World War II.
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Episode 25
Aired Nov 9, 2002
The Savage Time
In the midst of World War II, Green Lantern must prove to a company of Allied soldiers that he can fight without his ring; Superman and Hawkgirl meet a squadron of ace fighter pilots; German troops ambush Wonder Woman and Steve Trevor.
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Episode 26
Aired Nov 9, 2002
The Savage Time
Wonder Woman helps Steve Trevor and his contact escape from German forces; the Blackhawks attack a major German factory; Easy Company and Green Lantern locate Vandal Savage; the League must come together to stop Savage's invasion of America.
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