Once a petty crook, the Joker fell into a vat of chemicals that turned his skin white, his hair green, and his lips red, like a mad clown. His crimes always involve pranks and jokes that end with twisted punchlines only the Joker finds funny. He may look like he's clowning around, but he's bad news for Batman and Gotham City!

In his quest for chaos, the Clown Prince of Crime uses a wide variety of deadly clown props such as an electric joy buzzer, an acid-spraying lapel flower, and razor-sharp playing cards.