A thousand years into the future, the citizens of new Gotham must uncover the history of the Batman in order to stop a new Mr. Freeze.

Martian Manhunter's prediction of an alien invasion by The Joining has come true. As Batman tries to stop them on his own, he learns that even working with a team will stop The Joining.

After watching a movie about criminal masterminds, Penguin gets the idea to form a team of Gotham's greatest villains in order to finally take Batman down. Meanwhile, Batgirl and Robin must learn how to work together.

After a young circus performer named Dick Grayson loses his parents to a criminal named Tony Zucco, Bruce Wayne adopts the young boy. Once Bruce's secret is revealed, Dick joins Batman as his new sidekick, Robin. Together, they set out to find Zucco and bring him to justice.

Hugo Strange infects the population of Gotham City with a virus that transforms them into zombies, and only Batman and Robin are left to find and distribute the antidote. But when Robin falls, only Batman can save the day. But not everything is at it seems ...

Joker, Penguin, and Riddler battle over control of the city, until finally deciding to settle their differences by giving all of Gotham over to whoever is able to capture and discover the true identity of the Batman.

Batman and Robin must battle Superman, who is under Lex Luthor's mind control, as the villain plans to launch a wave of robots and take over the world's armies.

After Batman apprehends Black Mask, his henchmen plan to spring him from Gotham P.D. so that Black Mask can activate his doomsday device. When Batman is captured, Batgirl and Robin must stop the villain on their own.

The Joker decides to take on the role of "Batman" and doses Bruce with Joker venom to create an arch-rival of his own.

Batman investigates a villain known as Clayface, who is able to transform into other people.

The Joker uses a new weapon that turns anything into rubber or putty; the police chief wants Batman arrested.

Maximillian Zeus, a millionaire who is also a Greek history fanatic, takes control of Gotham from the sky after losing to Mayor Grange in a re-election.

A mysterious villain known as the Riddler challenges Yin, secretly helped by Batman, to a number of riddles. Things are not what they seem from the riddles...

Joker takes Detective Yin hostage, but once captured he refuses to tell of her whereabouts. Convinced it's the only way to learn Yin's location before she meets her demise, Batman uses a device created by Professor Hugo Strange to enter the bizarre brain of the Joker in search of an answer.

Ragdoll, a triple-jointed contortionist, crosses paths with Batman and Catwoman while continuously trying to steal priceless artifacts. Also, Selina Kyle befriends Bruce Wayne ... but what are her intentions?

The Riddler and Batman are dropped at the bottom of Gotham Harbor ... and the Riddler reveals his origins.

Batman searches for diamond thief Mr. Freeze.

The Bat Team goes up against an unstoppable thief who knows their every move.

After the Joker's plan to make all the dogs laugh like hyenas is thwarted by Clayface (Ethan Bennett), he plans to prove himself to Batman by turning a new leaf. Meanwhile, actor Basil Karlo steals the mutagen responsible for Ethan Bennett for becoming Clayface and he becomes the new Clayface. Can Batman trust Ethan enough to help him stop Karlo?

Hugo Strange creates a AI database called DAVE (Digitally Advanced Villain Emulator), encoded with the minds of Gotham's greatest criminals, in order to better predict their crimes. However, DAVE breaks free and proclaims himself to be "Gotham's ultimate criminal mastermind".

A trio of college misfits use stolen mutagens from Dr. Kirk Langstrom to transform themselves into animal forms and get revenge on those who have scorned them.

Batman attempts to outsmart the Cluemaster, who's seeking revenge on several game-show producers.

Perpetual loser Firefly tries to upgrade his powers with the aid of his new girlfriend Blaze, but is exposed to radioactive phosphorous and takes on a new more dangerous identity as... Phosphorus.

Batman welcomes another member of the Justice League to Gotham as he teams up with Green Arrow when Vertigo, a villain who can affect people's sense of balance, arrives in the city with a diabolical plan.

After his most recent crime spree, Arnold Wesker is taken to Arkham and apparently ""cured"" by Dr. Hugo Strange. A new career as a children's entertainer lies before Wesker ... but can he escape the shadow of Scarface?

The Joker is on a rampage when he gets hold of Bane's injection system and turns himself into a rampaging beast.

High-ranking Gotham officials begin to embrace environmental causes after the delivery of mysterious plants, and it becomes clear they're under the influence of ... Poison Ivy.

With the help of a slacker, Joker's mind is downloaded into a computer, enabling him to control the new WayneTech Nanobots. This creates a new and improved body who attempts to destroy Batman, Robin, and the original Joker.

When a rare Black Siberian Leopard is stolen, Batman and Batgirl suspect Catwoman and go to protect the second Black Siberian Leopard. But what happens when Joker beats them to the punch and brings the cats to Killgore Steed? It's a maze of doom with dangerous creatures. Can Catwoman, Batman, and Batgirl escape, or will they end up on Joker's wall?

Wrath and Scorn, two twins of the Dynamic Duo, are helping the villains of Gotham City. But what happens when both Batman and Wrath uncover each other's identities?

When Black Mask hires Hawkman's arch-nemesis the Shadow Thief to break him out of Arkham and assist in the theft of a meteorite, Batman must team up with fellow Justice League member Hawkman to defeat the villains.

The heroes fight their android counterparts to recover the Justice League's powers, while the Joining prepares for its final assault on Earth.

During a museum robbery, a partnership is formed between Catwoman and Penguin. But when Penguin double-crosses Catwoman before she can double-cross him, she and Batman have to stop Penguin before he unleashes his true plan: harnessing the power of Ra!

Batman deals with an arsonist known as Firefly and problems involving Gotham's mayor.

A new villain, Gearhead, makes his first appearance robbing a charity race, and Batman soon finds himself forced to upgrade the Batmobile to keep up with the cybernetic bad guy.

Firefly and Mr. Freeze team up to put their devastating plan into action: permanently putting Gotham City in a never-ending winter. Once the policeman's gala charity ball is put on ice, it's all up to the Batman.

A series of crimes bears the unmistakable mark of the Joker, but he is locked up in Arkham.

When Wayne Industries shuts down Cosmo Krank, a toymaker with a spotty safety record, the demented villain takes revenge by trying to shut down Bruce Wayne - permanently - with his diabolical toys.

Green Lantern seeks out Batman's help in locating renegade Green Lantern Sinestro, but when the villain comes to Earth, the Penguin ends up with the hero's power ring.

When evidence from a series of art thefts by the Everywhere Man, a new costumed villain with the power to replicate, implicates Bruce's close friend John Marlowe, Batman believes there must be another explanation. Now, Batman must unmask the identity of the "Everywhere Man" and prove his friend's innocence.