Dr Harleen Quinzel was a former psychiatrist who used to be in charge of the Joker at Arkham Asylum. She eventually fell in love with her patient and became obsessed with him. Having lost her sanity due to frequent torture, she soon joined Joker and took on the criminal identity of Harley Quinn, viewing life as one big joke.
Personality
Harleen was once a calm and compassionate young lady, before the Joker transformed her both mentally and physically into "Harley Quinn". Through the shock therapy and the Joker's manipulation, her mind and emotions were twisted and she was made into a homicidal, sadistic, child like psychopath, who would often use sexuality and her playful personality to achieve her goals or to entertain herself, usually harming others in the process. As of current time, she follows the Joker in whatever he demands of her, blindly and obsessively smitten with the ruthless psychopath, affectionately referring to him as Pudding.
Harley carries almost an innocent persona, wide-eyed and bright, finding humor in otherwise dark situations, much like Joker himself. She is also shown talking to voices in her head, saying that they told her to kill everyone and escape, before laughing it and saying that they said something else, potentially something worse.
Equipment
Chiappa Rhino 60DS: For long ranged combat, Harley sports a customized Chiappa Rhino 60DS, 6 cylinder magnum revolver. She carries it in a black leather holster slung under her arm.
Good Night: For melee combat, Harley carries a personalized wooden baseball bat which says "Good Night" down the side of it. She does have an urge to play with it, one example being when she pretends she's holding a shotgun.
