Harley Quinn, a.k.a. Dr. Harleen Quinzel is an enemy of Batman, and partner-in-crime to the Joker and Poison Ivy.She becomes fascinated with the Joker while interning at Arkham Asylum, and volunteers to analyze him. She immediately falls in love with the Joker during their sessions. After helping him escape from the asylum more than once, she is caught by her superiors, who revoke her license and put her in a cell of her own. During an earthquake in Gotham City, she flees and becomes Harley Quinn, the Joker's partner-in-crime.She is stuck in a highly abusive relationship. No matter how bad Joker is to her, she always comes back to him. On several occasions she has tried to cut ties with him but has failed to do so. Harley Quinn (Dr. Harleen Frances Quinzel) was first introduced as a villain on September 11, 1992, in the animated series Batman: The Animated Series, later adapted into DC Comics' Batman comic books. As suggested by her name (a play on the word harlequin ), she is clad in the manner of a traditional harlequin jester. The character is a frequent accomplice and the girlfriend of Batman's nemesis the Joker, and is also close to Poison Ivy, from whom she gained her immunity to poisons and toxins.The character was created by Paul Dini and Bruce Timm and was originally voiced by Arleen Sorkin in Batman: The Animated Series and its tie-ins. The character was portrayed by Hynden Walch on The Batman television series. In the Birds of Prey series, she was portrayed by actress Mia Sara, and by Sherilyn Fenn in the pilot episode. Throughout her portrayals, she is shown to speak with a pronounced Queens accent.IGN's 2009 list of the Top 100 Comic Book Villains of All Time ranked Harley Quinn as #45.[1]