“Harley Quinn is a fictional character, a supervillainess in the DC Universe.
She was first introduced on September 11, 1992, in Batman: The Animated Series, and 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, as well as her advanced physical abilities.
IGN’s 2009 list of the Top 100 Comic Book Villains of All Time ranked Harley Quinn as #45. She was ranked 16th in Comics Buyer’s Guide’s “100 Sexiest Women in Comics” list.”