Lex Luthor, on the run from the League, reactivates an old LexCorp project to stop the League - an android that can duplicate the powers of anyone it sees.

Even Superman is unable to defeat the android once it duplicates all of the League's powers. Only with the aid of J'onn, suffering a crisis of faith when he is overwhelmed by humanity's pettiness during a telepathic scan, can they turn Amazo against Lex.

The Justice League must deal with a prison break, unaware that prisoner John Dee is using the distraction to gain access to an experimental ESP machine and gain the power to manipulate dreams.

Four of the Leaguers are trapped in their dreams by Dr. Destiny - only J'onn and Batman can rescue them...if they don't fall asleep first.

Batman and Wonder Woman find themselves enmeshed in the schemes of Vandal Savage to take over the small country of Kasnia and use its space program to blackmail the world.

Batman and Wonder Woman move against Kasnia to prevent Vandal Savage from terrorizing the world with his orbital rail gun.

John Stewart leaves on a mission to help his fellow Green Lanterns overthrow a intergalactic dictator with strange powers.

Despero's followers attack and John is forced to use a gun when his ring becomes useless due to Despero's mental tampering. While John, Katma, and Hawkgirl are captured, J'onn, Kilowog, and Flash must try to deactivate the mystic flames and deprive Despero of his power.

The Justice Lords, an alternate version of the League from a different dimension, capture their counterparts and plan to bring their own brand of justice to the new Earth.

The Justice League must escape from their imprisonment at the hands of the Justice Lords and defeat their counterparts with the help of an unlikely ally.

A strange gemstone possesses all who touch it, turning them to evil...including Wonder Woman.

The League discover the secret behind the "Black Heart" gem, but everyone except the Flash is possessed, and he must save the day before the sun is destroyed.

After Aquaman frees Solomon Grundy, Hawkgirl and the Justice League are convinced that the Lord of Atlantis has gone rogue. But when the trail leads them to the mysterious Dr. Fate, they discover there is more to this strange partnership than meets the eye.

With the initial ritual destroyed, the League, Fate, and Grundy must travel into the dimension of the Old Ones while Aquaman fights the invaders in the Earth realm.

Gorilla Grodd brings together a powerful team of villains, welding them together into a close-knit group. Meanwhile the League is plagued by it own internal problems and non-cooperation, leaving them vulnerable to attack.

The Secret Society take advantage of the League's break-up to bring them down until only Green Lantern remains to free his comrades. When he falls as well everything looks hopeless.

Superman finds himself on a devastated future Earth with the man responsible - Vandal Savage.

In the ultimate reality show, the Joker pits the Justice League against the clock and against the Royal Flush Gang as the Justice League races to find and disarm all the bombs he's planted along the Strip in Las Vegas.

The League manage to defuse the Joker's bombs and defeat the four active members of the Royal Flush Gang...but the Joker has an Ace in the hole as he executes his real master plan.

The Justice Leaguers go their separate ways to celebrate the holiday season.

The Thangarians, Hawkgirl's people, arrive on Earth to aid them against the menace of the Gordanians. But all is not what it seems.

The League manage to escape and take refuge at Wayne Manor, while the Thanagarians scout the planet for them and realize their master plan for Earth.

The League defeats the squad of hawkmen sent to kill them at the Batcave, but must now figure out how to stop the activation of the hypergate before it destroys Earth.