Arleen Sorkin is a writer for Tiny Toon Adventures. After the show ended, friend and fellow TTA writer Paul Dini was writing for a new series based around Batman, and, inspired by Sorkin's personality and her past in cabaret, incorporated these aspects and more into a new character: Harley Quinn, The Joker's sidekick and lover. Dini convinced Sorkin to audition for the character she inspired, and won the role, playing the role starting with Batman: The Animated Series. She has since May 2011 retired from the role, now living with her husband, a television writer and their children.