The Joker has seen many different psychiatrists during his many internments at Arkham, but none like this young beginner, Doctor Harleen Quinzel, who is fascinated by him. The prince of crime will, over the sessions, corrupt her and make her fall into madness, this one ending up helping him to escape and join him in his gang. After falling into the same vat of chemical that changed her "pudding" years ago, she proved her love and devotion to the supervillain, beginning numerous misdeeds with him, despite being more measured. However, Gotham City is clearly not ready for the arrival of Harley Quinn !
