

He has teamed up with The Riddler, The Penguin, and Catwoman and has formed the United Underworld, and they plan world domination, but not before they dispose of Batman and Robin so they don't interfere with their plans. In the film adaption of the Adam West television series, The Joker is portrayed by Cesar Romero like in the television series. His crimes, according to Batman in the episode "the Jokes on Catwoman", include robbery, attempted murder, assault, battery, mayhem, and overtime parking.

The Joker uses strategic plans to escape from prison. He has come close to defeating them multiple times, but they have managed to outwit him each time. The Joker was fairly harmless, and his primary goal was to unmask Batman and Robin. The Joker's weapons were usually harmless, ranging from sneezing powder to squirting flowers to joy buzzers. The Joker was a former hypnotist that turned to a life of crime. In the Joker's first appearance besides the comics, he was portrayed by the late Cesar Romero in the Adam West 1960's television series Batman.

