Alias The Bat-Hulk! When the Riddler, Joker and Penguin team up together to commit a series of crimes to grab Batman's attention, he falls into their trap which leads to Batman being exposed to a chemical of the Joker's design that causes Batman to periodically change into a creature dubbed "Bat-Hulk", a giant muscle-bound creature who's touch can melt anything in it's grasp. Changing back to human form, Batman seeks out the aid of Metamorpho to try and find a chemical combination to reverse the mutation, however Batman changes back into Bat-Hulk and goes on a rampage, before ultimately finding the Joker, Riddler, and Penguin and joining up with them in their next criminal plot. Metamorpho goes after the crooks, and battles the Bat-Hulk, until the creature is struck by lightening causing the mutation to reverse and curing the Caped Crusader. The three criminals are then quickly rounded up and taken off to jail.