Harley Quinn is a fictional character, a supervillain in the DC Universe. The character was introduced on September 11, 1992, in Batman: The Animated Series and later adapted into DC Comics’ Batman comic books, first appearing in The Batman Adventures #12 (September 1993). 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 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 voiced by Hynden Walch in The Batman animated series. In the Birds of Prey series, she was portrayed by actress Mia Sara and, in an unaired version of the pilot episode, by Sherilyn Fenn. Throughout her animated depictions, she is shown to speak with a pronounced Brooklyn accent.
[box] Poison Ivy (Dr. Pamela Lillian Isley) is a fictional character, a DC Comics supervillainess who is primarily an enemy of Batman. Created by Robert Kanigher and Sheldon Moldoff, she first appeared in Batman #181 (June 1966). Poison Ivy is depicted as one of the world’s most prominent eco-terrorists. She is obsessed with plants, botany, and environmentalism. She uses toxins from plants and mind controlling pheromones for her criminal activities, which are usually aimed at protecting the natural environment. Fellow villain Harley Quinn is her recurring partner-in-crime and possibly her only human friend. She is best known as a villain of Batman and plays an important role in his rogues gallery and has proven to be one of his more powerful foes, being one of the few Batman villains to display anything close to superpowers. Pamela Isley a.k.a. Poison Ivy has been portrayed as a love interest for Batman in some comics. In one comic, Ivy was robbing a charity gala Bruce Wayne was attending. Ivy’s first kiss was poison, the second its antidote. When they first meet, Ivy’s toxic lips planted a seed of toxic rapture in Bruce. But when she later kissed a dying Dark Knight, Ivy unknowingly cured her intended victim and established a budding romantic tension between them.[/box]