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Doctor Harleen Frances Quinzel is a former psychiatrist employed at Arkham Asylum and a known associate of the Joker, operating under the alias Harley Quinn. After assisting in the Joker's escape from Arkham, Harleen was submerged in a silo of chemicals at Ace Chemicals, re-emerging as the Joker's right hand woman. Over the years, Harley has become a nemesis of Batman, growing to become known as the queen of Gotham City alongside the Joker,


History

How Suicide Squad Should Have Ended

Appearances