Fan Casting Batman: The Last Laugh

While locked up in the Slab penitentiary, the Joker finds out that he is suffering from a terminal brain tumor. Determined to go out with a bang, he causes a riot in the Slab, and in the ensuing chaos, modifies the chemicals used by the prison to suppress its metahuman inmates into his Joker venom, and manages to "jokerize" the other inmates, making them insane and changing their appearance, giving them white skin, red lips, green hair, and a wide smile. The Black Canary, Nightwing, and Batman move in to put down the riot, while Dinah Laurel Lance and Shilo Norman are trapped inside.The Blue Beetle narrowly rescues the Black Canary, Batman, and Nightwing, while Dinah and Shilo are not so lucky. Barbara Gordon feels remorseful for being absent on a date with Dick Grayson (Nightwing) while the riot first broke out and begins to wish that she could kill the Joker for the pain that he has caused in her life,Chaos soon spreads throughout the entire Earth and U.S. President Lex Luthor declares war on the Joker. While the JLA searches for him, the Joker hides out on Easter Island and sends his minions to capture Harley Quinn so he can impregnate her and produce an heir. Harley is eventually rescued by the Spoiler, Batgirl, and Power Girl.