: Before her descent into madness, she was Dr. Harleen Quinzel, a promising psychiatrist at Arkham Asylum.
Harley’s character arc is defined by her journey away from the Joker's toxic influence toward becoming an independent anti-hero. Harley Quinn: A Quinntessential Crash Course - GateCrashers Harley Quinn
Unlike most major comic characters, Harley Quinn did not debut in a comic book. She was created by Paul Dini and Bruce Timm for the 1992 episode "Joker's Favor" of . : Before her descent into madness, she was Dr