Harley Quinn first appeared in a 1992 episode of ... In fact, DC President and Publisher Jim Lee has said he considers Harley to be his company's fourth pillar, alongside Superman, Batman, and ...
In Joker: Folie à Deux, her version of Harley Quinn has been modified. She's no longer a doctor; instead, she's a fellow asylum inmate of the Joker (or, Arthur), who goes by Lee (her last name ...