The Joker is a supervillain appearing in American comic books published by DC Comics. Created by Bill Finger, Bob Kane, and Jerry Robinson, the character first appeared in the debut issue of the comic
Promotional artwork for Batman: Three Jokers (2020), depicting the incarnations of the Joker from the Golden Age (bottom), the Silver Age (middle), and the Modern Age (top). Art by Jason Fabok.
From the Joker's debut in Batman #1 (April 25, 1940)
Cover of Batman #251 (September 1973) featuring "The Joker's Five-Way Revenge", which returned the Joker to his homicidal roots. Art by Neal Adams.
The Killing Joke author Alan Moore in 2008. The novel has been described as the greatest Joker story ever told.
Harley Quinn is an antiheroine 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
Joker (character)
…these partnerships often collapse due to the Joker's desire for unbridled chaos. A romantic interest and sidekick for the Joker, his former psychiatrist Harley Quinn, was introduced in the 1990s. Although his primary obsession is Batman, the Joker has also fought other heroes, including Superman and Wonder Woman…
Various incarnations of Harley Quinn, as depicted in Harley Quinn (vol. 4) #43. Art by Nicola Scott.
Textless cover art of the second series' first issue featuring Harley Quinn's roller derby-inspired costume, art by Amanda Conner and Paul Mounts. Harley Quinn co-creator Bruce Timm said of the design: "I really like Amanda's design a lot because it's modern and a little bit punk rock, but it's really fun without being trashy. I think the whole roller-derby look is really fun because it's tough but it's still playful. It's not...It's not skanky".
Harley Quinn and Poison Ivy in "New Roots" from Batman: Urban Legends #1, art by Laura Braga.
Margot Robbie as Harley Quinn in Suicide Squad (2016)