Harley Quinn

Harley Quinn (Dr. Harleen Frances Quinzel, PhD) is a fictional character appearing in American comic books published by DC Comics. She was created by Paul Dini and Bruce Timm for Batman: The Animated Series as a henchwoman for the Joker, and debuted in its 22nd episode, "Joker's Favor", on September 11, 1992. While intended to appear in one episode, Quinn became a recurring character within the DC Animated Universe (DCAU) as the Joker's sidekick and love interest, and was adapted into DC Comics' canon seven years later, beginning with the one-shot Batman: Harley Quinn #1 (October 1999). Quinn's origin story features her as a former psychologist at Gotham City's Arkham Asylum who was manipulated by and fell in love with the Joker, her patient, eventually becoming his accomplice and lover. The character's alias is a play on the stock character Harlequin from the 16th-century Italian theater commedia dell'arte.

Following her introduction to the comics in 1999, Harley Quinn was depicted as the former doctor turned sidekick and lover of the Joker as well as the criminal associate and best friend of Poison Ivy. Later stories depicted Quinn as an independent supervillain who has left her codependent relationship with the Joker behind, beginning with the publication of her ongoing series, Harley Quinn. After years of scarce appearances in comics, Quinn returned in a leading role in 2009 with the Gotham City Sirens series, as part of an unstable alliance with Poison Ivy and Catwoman. The character's design was modernised in 2011 for DC's "The New 52" line-wide relaunch, with the character since regularly featuring as an antihero in the Suicide Squad and Birds of Prey team books. Other changes included fronting her own light-hearted Harley Quinn comic book and being established in a new romantic relationship with Poison Ivy. In 2021, DC's line-wide Infinite Frontier relaunch brought Quinn back to Gotham City and reestablished her as a superhero seeking redemption for her past actions, and now she currently acts as an antihero.

Harley Quinn's abilities include expert gymnastic skills, proficiency in weapons and hand-to-hand combat, complete unpredictability, immunity to toxins, and enhanced strength, agility, and durability. Quinn often wields clown-themed gag weapons, with an oversized mallet being her signature weapon. Additionally, she has a pair of pet hyenas, Bud and Lou, who sometimes serve as her attack dogs.

Harley Quinn has become one of DC Comics' most popular and profitable characters. She has been featured in many of DC's comic books and adapted in various other media and merchandise. DC Comics Publisher Jim Lee considers Harley Quinn the fourth pillar of DC Comics' publishing line, behind Superman, Batman, and Wonder Woman.

Originally voiced by Arleen Sorkin in the DC Animated Universe, she has since appeared in many other DC projects voiced by actresses such as Tara Strong, Hynden Walch, Laura Bailey, Jenny Slate, Melissa Rauch, Laura Post, and Kaley Cuoco. Cuoco provided the character's voice in the 2019 animated series Harley Quinn. Mia Sara, Margot Robbie, and Lady Gaga have portrayed the character in live action media.

Harley Quinn was created by Paul Dini and Bruce Timm for the 1992 Batman: The Animated Series episode entitled "Joker's Favor" while Dini was writing the episode. Initially written as an animated equivalent of a walk-on role, Harley Quinn was intended to appear in just one episode. With this, her origin was not supposed to be more than it was, making her popularity unexpected and a surprise success. As Dini was putting together the story for the episode, he wanted to introduce a foil for the supervillain the Joker that would emphasize the Joker's comic book personality traits: funny, scary, and egotistical. He then thought of giving Joker a henchwoman, inspired by the molls of the 1960s live-action Batman series, and then decided she would be a "funny counterpart to the Joker to maybe work up a little Punch and Judy attitude between them"; Dini stated, "[...] she could crack a joke and the henchmen would laugh, and the Joker would kind of glare at her". The character idea dated back in 1991, when Dini witnessed his college friend Arleen Sorkin play a jester in an episode of Days of Our Lives. Dini then based Harley Quinn on Sorkin, incorporating aspects such as her mannerisms and "snappy, wisecracking, bubbly blonde" personality. Dini even decided to have Sorkin voice her. In recording Harley Quinn's voice, Sorkin spoke in her normal New York accent while putting in a "little Yiddish sound", since Dini made the character Jewish, another aspect of the character borrowed from Sorkin; Dini described her voice for the character as having "a snappy blonde but also kind of a bad girl": "a little bit of Adelaide from Guys and Dolls, a little bit of Judy Holliday", and "a lot of Arleen", stating that it sounded "very close" to Sorkin's voice.

Dini had several names in mind while naming the character, such as Columbine, and eventually settled on the name "Harley Quinn". Dini chose the name for the character to be in line with other Batman characters's names being puns, and also because he thought "Harley was a fun name for a girl". The name Harley Quinn is a play on Harlequin, a stock character from the sixteenth-century Italian physical comedy theater commedia dell'arte.

In designing the character, Timm did a "simplified supervillain version" of traditional Harlequin gear; from the commedia dell'arte original, he took the jester hat, ruffled collar, diamond pattern, and domino mask and put them on a red-and-black bodysuit, on which the diamonds were strategically placed for easier animation. Timm took Harley Quinn's red and black color scheme from the Golden Age comic book character Daredevil. Dini had previously made a rough design for the character, which Timm improved on.