Season 1
Justice League Unlimited Episode 1 Initiation
The League expands their operations, enlisting new recruits across the globe. The newest of these is Green Arrow, who has repeatedly refused to respond to invitations to join the League. He is therefore pulled to the rebuilt, and much larger, Watchtower by teleport. Opting against joining, he hitches a ride back to Earth with the team of Green Lantern, Captain Atom and Supergirl, who have been sent on a mission to stop a giant, uncontrolled, nuclear-power machine in an unnamed Asian country. Supergirl learns about the value of having a solid mission plan, while Green Arrow is given the opportunity to see how his brand of heroism can be of use to the Justice League. This episode also features cameos from over 30 other heroes, many of whom would be featured in subsequent episodes. Most notably, Green Arrow's decision to join the League is shown to be influenced by catching his first glimpse of Black Canary.
23 min
Justice League Unlimited Episode 2 For the Man Who Has Everything
Batman and Wonder Woman find Superman held captive by Mongul in the Fortress of Solitude and dreaming of an idyllic life on Krypton, courtesy of a wish-fulfilling parasitic plant known as the Black Mercy. This episode is adapted from a popular story written by Alan Moore and illustrated by Dave Gibbons for Superman Annual #11 in 1985. This also marks the first, and only appearance by Joe Chill in the DCAU[citation needed], as Batman's idyll is revealed to be watching his father beat the thug senseless over and over.
Justice League Unlimited Episode 3 Kids’ Stuff
Morgaine le Fey transforms Superman, Batman, Wonder Woman, and Green Lantern into 8-year-olds after Mordred uses his magic to remove all adults from Earth and keep children on the earth. Lots of comic relief in this episode comes from Wonder Girl displaying a crush on Batboy, who simply acts like a smaller version of his adult self, a clueless Superboy in every situation, a young Green Lantern who hides his nerdish side, and the Demon Etrigan as an infant. Based loosely on elements of the DC Comics events JLA: World Without Grown Ups and Young Justice: Sins of Youth.[citation needed]
Justice League Unlimited Episode 4 Hawk and Dove
Wonder Woman teams up with two super powered brothers, Hawk and Dove, to stop Ares' plans to escalate a European civil war by loosing a war machine called the Annihilator into the fray. As a nod to their earlier roles as brothers on The Wonder Years, the two brothers were voiced by Fred Savage (Hank/Hawk) and Jason Hervey (Don/Dove), though at the last second Savage and Hervey switched roles.
Justice League Unlimited Episode 6 Fearful Symmetry
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.
Justice League Unlimited Episode 11 Wake the Dead
A trio of college 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. This episode marks the return of Shayera Hol (Hawkgirl) to the Justice League.
Justice League Unlimited Episode 12 The Once and Future Thing, Part One: Weird Western Tales
Batman, Wonder Woman, and Green Lantern chase Chronos to the past, where they team up with some of the greatest DC heroes of the Old West. After defeating stolen future tech in that era, they again follow Chronos to the future. Warhawk from the Batman Beyond era is revealed to be Green Lantern and Hawkgirl's son.
Season 2
Justice League Unlimited Season 2 Episode 1 The Cat and the Canary
Black Canary convinces Green Arrow to help save her mentor, Wildcat, from his involvement in a superpowered underground fight club known as Metabrawl.
Justice League Unlimited Season 2 Episode 2 The Ties That Bind
Mister Miracle and Big Barda solicit Justice League assistance to free Oberon from Apokolips. J'onn refuses, but Flash decides to help out on his own.
Justice League Unlimited Season 2 Episode 3 The Doomsday Sanction
Superman battles Doomsday in the heart of a volcano. Doomsday is revealed to be an imperfect clone of Superman. Batman probes the Cadmus conspiracy to destroy the Justice League.
Justice League Unlimited Season 2 Episode 4 Task Force X
A team of supervillains dubbed "Task Force X" (better known in comics as the Suicide Squad) composed of Deadshot, Plastique, Captain Boomerang, and the Clock King is recruited by Cadmus. They steal the Annihilator armour from the Watchtower.
Justice League Unlimited Season 2 Episode 5 The Balance
Felix Faust, imprisoned in a mirror, fools Tala into letting him out, whereupon he possesses the Annihilator and casts Hades out of Tartarus. After her armor and lasso's full powers are activated by Hippolyte, Wonder Woman teams up with Hawkgirl to help Hades reclaim his kingdom at Zeus's command. Meanwhile Wonder Woman and Hawkgirl must deal with their anger towards each other following the events of Starcrossed.
Justice League Unlimited Season 2 Episode 10 Flashpoint
Lex Luthor seizes control of the Watchtower's main gun to fire on Cadmus, causing massive collateral damage on the city and falsely implicating the League as responsible. Convinced it is an act of revenge, Amanda Waller commands Galatea to attack the Watchtower with an army of Ultimen clones.
Justice League Unlimited Season 2 Episode 11 Panic in the Sky
The founding members of the Justice League, with the exception of Batman, surrender to the government. In the middle of a huge battle between the "Unlimited" part of the League and the army of Ultimen, Supergirl and Steel battle Galatea to keep her from destroying the Watchtower.
Justice League Unlimited Season 2 Episode 12 Divided We Fall
With most of the League unavailable, the League's original seven battle against the fused Luthor and Brainiac. It is then up to the Flash to stand up against the Luthor-Brainiac team, prepared to pay the final price.
Justice League Unlimited Season 2 Episode 13 Epilogue
In the future of Batman Beyond, Amanda Waller reveals to an older Terry McGinnis she created the project Batman Beyond to continue Bruce Wayne's work. The episode is not only the Justice League season finale, but, as a cross over, containing a lot of information that applies to after the end of Batman Beyond. The episode contains many references to prior episodes of Justice League in that some of the episode showed the current team and Walller who had been a big part of previous episodes.
Season 3
Justice League Unlimited Season 3 Episode 1 I Am Legion
After Lex Luthor escapes from prison, Gorilla Grodd baits him into joining the new Secret Society with a piece of Brainiac technology. Luthor, the Key, and Doctor Polaris steal the Spear of Longinus from Blackhawk Island despite the efforts of Flash, Fire, Shayera, and the last surviving Blackhawk to stop them. This new Secret Society is similar in scale to the Legion of Doom (a supervillain group from the Challenge of the Super Friends animated series), and its base is an updated version of the one used by the Legion of Doom. The title of this episode is a variant on a verse from the Bible (Mark 5:9), specifically the last half of the verse that states 'My name is Legion, for we are many.' This is a reference to the Secret Society being a veritable legion of super villains[citation needed], as well as the appearance of the headquarters of the Legion of Doom, updated for the 21st century and used as the base for the Society.
Justice League Unlimited Season 3 Episode 2 Shadow of the Hawk
Shayera agrees to meet with Carter Hall, an archaeologist who has discovered Thanagarian artifacts from ancient Egypt. With a suspicious Batman eavesdropping, Carter reveals himself to be her reincarnated lover from the past and Hawkman to a confused Shayera. The Shadow Thief attempts to steal the artifacts, which results in the destruction of the tomb, and the question unresolved.
Justice League Unlimited Season 3 Episode 3 Chaos at the Earth’s Core
Supergirl, Stargirl, S.T.R.I.P.E., and Green Lantern help Warlord liberate Skartaris (a hidden world inside the Earth's core) from Deimos, a brutal dictator while protecting a very large piece of Kryptonite from Metallo and Silver Banshee. Originally titled "Heart of Stone".[citation needed]
Justice League Unlimited Season 3 Episode 4 To Another Shore
Wonder Woman protects the body of the Viking Prince from Legion agents who want it for reverse engineering of invulnerability powers. Troubled by his isolation, J'onn leaves the Justice League to better understand humanity. This episode references the 1970s Wonder Woman TV series by having Diana execute the same costume-changing spin to transform into Wonder Woman as that performed by Lynda Carter in the live-action version.[citation needed] Originally titled "Elegy".[citation needed]
Justice League Unlimited Season 3 Episode 9 Grudge Match
Roulette restarts Metabrawl, this time with an all-female fight card ("Glamour Slam") made up of mind-controlled Justice Leaguers. First the Huntress and Black Canary are set against Vixen and Hawkgirl; then the four must contend against the night's main attraction: Wonder Woman.[citation needed], it takes place in the city of Blüdhaven.
Justice League Unlimited Season 3 Episode 11 Ancient History
The Hawkman story concludes here when Shadow Thief captures Green Lantern, Shayera and Hawkman, then forces them to watch a vision of their past selves developing an ancient society of Egypt with Thanagarian technology. It turns out Shadow Thief is a villain from Carter Hall's mind that was released when he touched the Absorbacron in "Shadow of the Hawk." Hawkman defeats Shadow Thief and leaves. John Stewart, not wanting to have destiny play out his life, does not get back with Shayera, even though the two say they love each other. GL goes back to Vixen, but not before he tells Shayera about Rex Stewart (Warhawk), their alleged future son. In the final scene of the episode, Shayera asks Batman about this future son, but the credits roll before he can answer.
Justice League Unlimited Season 3 Episode 13 Destroyer
The Justice League reluctantly teams up with the Secret Society to repel Darkseid's full-scale invasion of Earth. As the League and Secret Society members battle the Apokolips fleet across the planet, Superman, Batman, and Lex Luthor take on Darkseid atop the Daily Planet building.