Two villains, Professor Pyg and Mr. Toad, swear revenge on three Gotham millionaires... and one of them is Bruce Wayne. Meanwhile, Bruce tries to cope with an overprotective Alfred, who takes measures to make sure that his ward is safe.

A new villain arrives in Gotham: Magpie, a woman with razor-sharp claws and an uncanny healing ability. She is hunting down psychiatrists and Batman has to find out who Magpie is and what she wants if he hopes to stop her. Meanwhile, Bruce begins testing Tatsu.

While Bruce tries to determine if Tatsu can function as his bodyguard, a new villain named Anarky goes on a rampage across Gotham.

When Bruce Wayne hires a brilliant scientist to work on the his newest product, a device capable of solving the world's energy crisis, he draws the attention of one of the most dangerous groups in the world - the League of Assassins.

A new criminal genius captures criminals and imprisons them in life-size toy soldiers... rigged to explode. Batman soon discovers that the villain is seeking revenge on the people he holds responsible for his plight.

When a security guard is transformed into a monstrous freak by an industrial accident, Batman becomes involved when the guard, Rex Mason, goes on a rampage.

With the League of Assassins knowing where the SoulTaker Sword is, but unable to get Katana to return it, they decide their only course of action is to kidnap Bruce Wayne and hold him for ransom - that ransom being the sword. Of course, they don't realize that Bruce Wayne is actually Batman! When Katana shows up to turn over the sword and rescue Wayne, Alfred causes a diversion, allowing Wayne to don the Batman suit and join the battle. Teaming with Katana to end the League, Batman finds himself in an all-out ninja fight that ends with a startling revelation.

Tobias Whale has one of his underlings abduct Barbara Gordon as leverage against her father, and Lt. Gordon turns to Batman for help. Meanwhile, Batman finds himself working with a new partner whose style clashes with his own.

Cypher, a villain with the ability to control others, goes after Jason Burr in an attempt to gain the Ion Cortex for the League of Assassins.

Anarky returns once again to challenge Batman - but this time, his plan is far more deadly. Stealing a valuable object from the League of Assassins, Anarky pins the blame on Batman. At the same time, Anarky informs Batman that he knows where he can find the League. Although he knows it's a trap, Batman goes with Katana anyway. As it turns out, Anarky has led both Batman, Katana, League leader Lady Shiva and her ninja assassins to a building that handles rare and deadly diseases. Once inside, Anarky releases one of the airborne viruses in the building. Now Batman and the others have to find a way to escape before beinghuged. One more thing: if the virus gets out... Gotham is doomed!.

Professor Pyg and Mr. Toad are back... and they've set their sights on Gotham's elite couture culture. Leaving clues that only Batman can decipher, they attack both a model and a clothing designer - encasing them in deadly traps. Although Batman and Katana are able to save the day, they miss Pyg and Toad's master plan: to destroy the yacht where the after-party for Gotham's Fashion Week is being staged. Every fashion icon in the world will be there... as well as Bruce Wayne!.

Magpie escapes from Blackgate when she realizes that Batman has a new female partner. Furious, the villainess plans to eliminate her rival and bring Batman to her side once and for all.

Ra's al Ghul and Lady Shiva use the mind-controlled Jason Burr to steal the Ion Cortex. Meanwhile, Tatsu learns the truth about Alfred's connection to her dead father.

Batman is forced to ally with Silver Monkey to escape captivity and stop R'as Al Ghul from conquering Gotham. Meanwhile, Katana and Alfred launch a rescue mission but when they're captured, Ra's reveals Alfred's role in the passing of Katana's father.

Ra's Al Ghul releases Batman's enemies from Blackgate Prison, promising them power in return for bringing him the vigilante's head. Meanwhile, Katana is given the choice tohug Alfred and free her father's soul, or let the former MI6 agent go free despite his sins.

Six months after the black out, new DA Harvey Dent is trying to put a stop to the mask and cape crisis.

Batman and Katana team up with Rex Mason, also known as the "Golem of Old Gotham", as they combat an increasing army of armored thugs that have been terrorizing several parts of Old Gotham. In addition, they also dodge Harvey Dent's newly-created Special Crimes Unit, which is ordered to take down both the armored criminals and the vigilantes fighting them.

Humpty Dumpty captures Batman, Katana, Gordon, Mayor Grange and Tobias Whale, and puts them into an elaborate cuddle mystery. To escape, they must figure out which one of them is guilty of a crime... before it's too late for all of them.

When the Key steals a priceless piece of encryption software only to get arrested, Batman must turn himself over to Harvey Dent so that he'll be locked up and can get the Key out and into Federal custody. However, the head prisoner,huger Croc, plans to make sure that Batman doesn't leave Blackgate alive.

Batman and Katana encounter a strange Man-Bat creature, who is the experimental result of Pyg and Toad's animal army of mutant humans.

A mysterious Council launches a wave of masked attackers to abduct Ava Kirk, a childhood friend of Bruce's whose father died 20 years ago. Bruce soon discovers that the father, Paul Kirk, is still alive... and has been used as the basis for a clone army.

Desperate to rid the city of Batman, Harvey Dent allies with Anarky, who recruits a new hero to take Batman's place... Deathstroke.

When Batman and Katana are ambushed in the Gotham subway byhuger Croc, it's up to Barbara Gordon to save them. Only one problem: Barbara is on a date.

When Bruce Wayne is "assassinated" by Batman, he lets the world think he's dead and goes in search of the imposter - "The Bad Batman".

Batman continues to work in secret so he can find answers, while Harvey Dent recovers in Gotham Hospital. Blaming Batman for everything, he enacts martial law in Gotham.

When Alfred is taken hostage by Deathstroke in the Bat cave, Batman must face him alone. Harvey Dent reveals his true nature as Two Face.