Brilliant cryogenics expert Dr. Victor Fries is transformed into Mr. Freeze, a vengeful creature who can only survive in subzero temperatures.

A popular actor renowned for his ability to play any part has a terrible secret—he's addicted to a strange chemical formula that enables him to alter his facial features without makeup.

An aging mob boss learns his drug dealings have contributed to his son's drug addiction.

When a timid accountant accidentally runs afoul of the Joker, he promises the Joker anything if the villain will only let him go.

When Catwoman infiltrates the underground headquarters of the terrorists, both she and Batman are captured and left to die as victims of a viral plague.

When District Attorney Harvey Dent is poisoned after a dinner date, Batman makes the horrifying discovery that his date was Poison Ivy, a plant-obsessed villainess.

A horrifying villain named Scarecrow spreads fear gas and wreaks havoc at Gotham State University.

The Joker infiltrates the birthday party of Mayor Hill's son in order to plant a bomb.

Batman's friend, Dr. Leslie Thompkins, is taken prisoner by a ruthless land developer after she uncovers his devious plans.

Bullock's account of a botched sting operation is so at odds with the other officers' testimony that the police investigator suspends everyone involved.

When a maniacally punctilious man faces financial ruin because of attorney Hamilton Hill, he transforms into the devious Clock King and swears revenge on Hill, now the mayor of Gotham.

The Joker employs a lethal mind-altering laughing gas to transform the citizens of Gotham into total fools.

Alfred and his friend, Maggie Paige, visit a health spa that is actually run by the nefarious Poison Ivy.

District Attorney Harvey Dent hides a deep dark secret—he has a second personality, Big Bad Harv, a tough gangster.

Two-Face, the former Harvey Dent, begins an aggressive campaign against his hated rival, Rupert Thorne.

The Scarecrow uses a fear chemical triggered by adrenaline on Gotham's greatest athletes, then bets against them to reap the winnings.

After the Penguin sprays Batman with nerve gas, a 12-year-old boy rescues the unconscious hero and hides him in his basement.

Batman suspects that an imprisoned Detective Bullock may be innocent after he is arrested for murder. The real murderer turns out to be Killer Croc, who framed Bullock to get revenge.

Bruce begins to worry when all of his wealthy friends join the same brotherhood group run by Nostromos, a so-called psychic.

When men begin disappearing at a bowery, Bruce Wayne decides to go undercover as a worker. He loses his memory after he is attacked, kidnapped and forced to work in a mining camp.

The Mad Hatter puts the city of Gotham under his control in an attempt to impress a woman, Alice, with whom he is in love.

Batman investigates a theft of bearer bonds intended for the starving people of a poor country.

Bruce Wayne wakes up to find that his parents are not dead, he is not Batman, and he's engaged to Selina Kyle.

Batman discovers a gang of forgotten runaways living deep within the Gotham sewer system.

When Wayne Enterprises is robbed by a mysterious figure known as the Ninja, Batman and Robin discover that the Ninja is an old nemesis of Bruce Wayne.

Dr. Hugo Strange's invention, a machine that reads people's thoughts, leads him to discover that Bruce Wayne is Batman.

When a genetic engineer produces a man-cat hybrid, he kidnaps Selina Kyle to provide his creation with a mate.

Batman must thwart the Scarecrow's plan to poison Gotham's water supply with a chemical that induces hallucinations.

Batman connects recent bombings in Gotham to an episode of an old television series featuring his favorite boyhood hero, the 'Gray Ghost.'

Selina Kyle uncovers a plot to infect stray animals with a deadly disease that will be transmitted to the human population.

On the anniversary of the death of Bruce Wayne's parents, Batman expresses doubts about whether or not he should continue his one-man war against crime.

While hiding from the police, Batman's deadliest enemies exchange stories about their mutual nemesis—Batman.

Professor Milo tries to use an old friend of Bruce Wayne's, Anthony Romulus, to destroy him after Milo injects Romulus with a serum that changes him into a wolf.

When a man-sized bat ransacks Gotham harbor, Batman suspects that Dr. Kirk Langstrom is drinking his Man-Bat formula again.

The Joker kidnaps three prominent citizens during Christmas and challenges Batman to find him before midnight.

Karl Rossum, owner of Cyberton Labs has been replacing important authority figures with robot look-alikes. Batman invites a young woman to dinner, not knowing that she is a robot as well.

Batman escapes from being attacked by his own Batcomputer, which was sabatoged by HARDAC. He now seeks to get back Gordon, Hill and Bullock, who have all been replaced with robots.

When genius Edward Nygma's greedy boss unjustly fires him, Nygma seeks revenge as the Riddler.

When a billionaire builds a casino called the Joker's Wild, the Joker breaks out of Arkham Asylum to destroy it.

A confused robot that believes he is Batman causes problems for the real Dark Knight.

Batman investigates a notorious global crime cartel, The Society of Shadows, which has begun to operate in Gotham City.

To prove that he has a superior mind, the Riddler lures Batman into a contest inside a virtual reality computer game.

The Joker becomes enraged when the Gotham copyright office rejects his demand for a copyright for his grinning Joker fish.

Harley Quinn has broken off with the Joker and teams up with Poison Ivy. Together they wreck havoc on Gotham and now Joker wants a piece of the action.

While engaged in a high-speed chase, the Penguin's gang escapes and the Batmobile is virtually demolished.

Sidney Debris, a small-time mobster, earns the hatred of all of Batman's enemies when he claims to have accidentally killed Batman during a brawl.

When glamorous female magician Zatanna is framed for a robbery during her act, Batman comes to her defense.

After learning the name of an extortion ringleader, Batman mysteriously refuses to let Robin continue the investigation with him.

Veronica Vreeland, a socialite desperate to create a novel party, makes the mistake of inviting the Penguin as her guest of honor.

Despite Batman's orders not to, Robin pursues Tony Zucco, the criminal who was responsible for the death of Robin's parents.

Bruce Wayne is temporarily blinded when the Penguin steals a new police helicopter with weaponry developed by WayneTech.

Bruce Wayne and Alfred travel to Japan to help Bruce's old martial arts teacher, Sensei Yoru.

After a fortune disappears from a gem exposition, Batman investigates. He discovers that the crime may have been committed by an invisible man, an ex-con named Lloyd Ventris.

When Robin is mysteriously abducted, Batman's search leads him to meet Ra's Al Ghul, leader of The Society of Shadows, whose daughter, Talia, has also been kidnapped.

Batman discovers Ra's Al Ghul's plan to flood the Earth with chemicals and return it to a lush, green planet, destroying all existing life in the process.

Batman investigates a series of baffling crimes and discovers that the crime czar is a wooden dummy, manipulated by a mild-mannered man called the Ventriloquist.

Believing he's the reincarnation of Zeus, a mad shipping magnate mounts a stolen electron cannon atop his penthouse to shoot 'lightning bolts' at the 'wicked mortals' below.