The origin of the character was recounted in a 1994 graphic novel The Batman Adventures: Mad Love.
In her first appearances she was depicted as a character completely devoted to the Joker, totally oblivious to his psychotic nature and obvious lack of affection for her this characterization has remained more or less consistent throughout her subsequent appearances. Harleen Frances Quinzel, also known as Harley Quinn (a pun on the word 'harlequin'), first appeared in the Batman: The Animated Series episode ' Joker's Favor', where she served as a humorous female sidekick to the Joker. J I'd be used to a little pain.' ―Harley Quinn ĭr.
