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?

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.

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.

The Penguin, Mr. Freeze, and Alfred's old school chum are all on the trail of a sunken treasure in Gotham Harbor.

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.

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 ...

When Harleen Quinzell is cancelled from her television program, Joker takes an interest and decides to groom her as his new partner in crime, Harley Quinn.

Bruce discovers that Wayne Industries is distributing alien technology across the world, and gains the aid of a mysterious new ally.