Biography[]
Doctor Harleen Frances Quinzel was a psychiatrist who worked at Blackgate Penitentiary and Arkham Asylum. At some point during her tenure at Arkham, she would become the doctor to Gotham's most dangerous supervillain, the Joker. She would go on to try and treat his psychosis over the course of several months, not realizing that the Joker was actually manipulating her the entire time.
Growing mentally unstable the longer she spent with him, Harleen eventually convinced herself that she was in love with the Clown Prince of Crime and started secretly helping him escape from Arkham.
Personality[]
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Physical description[]
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