Batman: Brave & The Bold Cartoon Batman team up with Joker

Courtesy of Warner Bros. Animation Deep Cover for Batman and Game Over for Owlman" Two-Part episode synopsis: When parallel worlds collide, Batman swaps places with Owlman--his criminal counterpart in an alternate universe--to stop the Crime Syndicate from taking over their world. Crime fighters in one world must battle their evil counterparts in a crime spree melee. Meanwhile back on Earth, Owlman has been perpetrating crimes disguised as Batman and assembled all the villains to join him. When Batman returns, he finds himself on the wrong side of the law and hunted by Green Lantern, Aquaman, Blue Beetle, Red Tornado and Plastic Man. Its a strange twist of fate that leaves Batman with only one option - to team up with Joker and take Owlman and the Crime Syndicate down!