Harley Quinn by DeCarlo; Joker by Byrne
John Byrne is one of the most storied creators in the history of comics. Beginning his career at Charlton he quickly moved over to Marvel Comics where he established himself early on as a workhorse and fan favorite, he would draw early appearances of Iron Fist before landing the gig working with Chris Claremont on X-Men. Claremont and Byrne would create several of the most memorable storylines in the history of the X-Men, their Dark Phoenix Saga and Days of Future Past stories have been adapted into three feature films. Byrne would convince Claremont to not kill Wolverine, proving to be one of the most lucrative decisions in Marvel's history, he would also introduce Kitty Pryde and Alpha Flight during this time. After his work on X-Men Byrne would have a short run on The Avengers before launching his second classic comic run, this time on Marvel's first family The Fantastic Four, writing and drawing the title for five years. Byrne would leave Marvel for DC in the mid 1980s where he was tasked with revamping their flagship Superman titles, he would draw two Superman titles a month while writing a third. After two years at DC Byrne returned to Marvel where he would create memorable stints on She-Hulk, Namor The Sub-Mariner, and Iron Man. In the 90's Byrne would work on several creator owner titles at Dark Horse, including his Next Men (which would introduce Mike Mignola's Hellboy), Babe and Danger Unlimited. In the years that followed Byrne would create many more books, often working on titles that inspired him as a boy including a revamp of Jack Kirby's Fourth World and DC's Doom Patrol and The Demon.
Klaus Janson is a German-born American comics artist, working regularly for Marvel Comics and DC Comics and sporadically for independent companies. While he is best known as an inker, Janson has frequently worked as a penciller and colorist. Janson began working for DC Comics in the early 1980s and inked Gene Colan's pencils on Detective Comics and Jemm, Son of Saturn. Janson was one of the artists on Superman #400 (Oct. 1984) and was one of the contributors to the DC Challenge limited series. His collaboration with Miller on Daredevil would soon be eclipsed by a second collaboration between them, on Batman: The Dark Knight Returns in 1986. Janson inked the early issues of The Sensational Spider-Man which had been written and penciled by Dan Jurgens. Janson's work as an inker and occasional penciler at Marvel Comics includes collaborations with John Romita Jr. on Wolverine, The Amazing Spider-Man and Black Panther.
Dan Decarlo is an american comic book artist who's best known for modernizing the look of Archie comics through the late 50' and 60's. Dan is also recognized as the co-creator of Sabrina the Teenage Witch, Josie and the PussyCats, and Cheryl Blossom. Dan has also notably worked on Sherry the Showgirl and Millie the Model for Marvel comics.