The Joker has been a constant nemesis of the Batman, although his past is so shrouded in mystery, even he isn't sure of what he was before he became the Joker. In what was revealed in the movie, the Joker was supposedly a failed comedian who tried to get a performance gig so that he could support his pregnant wife Jeannie while living in a dilapidated apartment building. Out of desperation, he came into contact with two criminals who were planning a heist of the playing card company that was next to the chemical plant where he once worked, and for his help, they would provide him with anonymity by having him wear the mask and cape of the Red Hood, a criminal alias used by others before him. The comedian accepted the job, hoping that it would turn his fortunes around, but shortly afterward he received news from the police that his wife Jeannie had died in an accident involving a faulty electrical appliance. Although he tried to talk his way out of going ahead with the robbery, the two criminals pressured him into doing so at the threat of his own life. As they were entering the chemical plant building that night, the police gunned down the two criminals and was chasing the comedian who was now the Red Hood. Batman came onto the scene and confronted the comedian, who then fell into a vat of chemicals by accident and escaped into the river. Upon removing the hood, the comedian saw that his skin was bleached white, his hair turned a bright shade of green, and his lips became blood red. Realizing that the world had become a sick demented joke at the moment, the comedian snapped as he laughed hysterically, becoming the Joker.