Dr. Harleen Quinzel was the foremost psychologist at Arkham Asylum, deadset on fixing the most fractured minds known to man. But a fixation on the Joker quickly proved toxic when Harleen helped him escape! Joining his side as Harley Quinn, she soon found that their love was unhealthy and made her own exit. Determined to be her own woman, Harley Quinn left Gotham City to create a life on her own! Whether as a criminal, a member of Task Force X, or on her own, Harley Quinn is a wild card unlike any other!