Summary
- Harley Quinn's origin is revealed in The Batman Adventures: Mad Love, a comic book from December 1993.
- The character of Harley Quinn was inspired by Paul Dini's college friend, Arleen Sorkin, who played Calliope Jones on Days of Our Lives.
- The Joker manipulates and seduces Harley Quinn to become his sidekick/love interest, but is outraged when she comes close to killing Batman.