Question: Dreamslayer is a homage to a character created by whom?

Context paragraphs:
Dirty Duck (comics): Dirty Duck is a fictional character created by underground comix artist Bobby London.  The style of the strip is an homage to George Herriman's Krazy Kat.

Darkchylde: Darkchylde is an American comic book character created in 1996 by Randy Queen.  It was originally published by Maximum Press, and later by Image Comics, through Homage Comics, a publishing imprint of Wildstorm.  Subsequent projects would by published by Darkchylde Entertainment, through Wowio.

Dreamslayer: Dreamslayer is a fictional character, a DC Comics supervillain, and part of the evil gang called Extremists.  Like the other Extremists, he is a homage to a Marvel Comics character, in this case Dormammu.  He first appeared in "Justice League Europe" #15 (June 1990), and was created by Keith Giffen, Gerard Jones and Bart Sears.

Dormammu: Dormammu ( ) is a fictional character appearing in American comic books published by Marvel Comics.  The character first appeared in "Strange Tales" #126 (November 1964), and was created by Stan Lee and Steve Ditko.

Doc Stearn...Mr. Monster: Doc Stearn...Mr. Monster is a fictional character comic book superhero created by Michael T. Gilbert, most recently published by Dark Horse Comics.  The character first appeared in Pacific Comics "Vanguard Illustrated" #7 (July 1984).  Later the character graduated to his own monthly series "Doc Stearn...Mr. Monster" from Eclipse Comics.  Mr. Monster was derived from an old 1940's character created by Fred Kelly who appeared only twice in 1940s Canadian comic books ("Triumph Comics" #31, 1946, and "Super-Duper Comics" #3, 1947).  After trademarking Mr. Monster, Gilbert heavily revised the character creating a Horror/Humor hybrid which often featured heavy satire of both the horror genre and superhero comics in general.

Escapist (character): The Escapist is a superhero character created by Michael Chabon in the 2000 novel "The Amazing Adventures of Kavalier & Clay".  In the novel, the Escapist is a fictional character created by the comics writer protagonists.  The character later featured in the metafictional work "Michael Chabon Presents the Amazing Adventures of the Escapist" and Brian K. Vaughan's comic "The Escapists".

Nyoka the Jungle Girl: Nyoka the Jungle Girl is a fictional character created for the screen in the 1941 serial "Jungle Girl", starring Frances Gifford as Nyoka Meredith.  The character of Nyoka is often described as having been created by Edgar Rice Burroughs; however, although the serial was officially based on Burroughs' story "Jungle Girl" (first appearing in the pulp magazine, "Blue Book", and later published as a novel), there is no character named Nyoka and no Nyoka-like character in the original story.  The movie's credits list Burroughs along with six other writers, but his input on creating the film character was obviously minimal, because the studio later was able to use the name "Nyoka" in a sequel without crediting Burroughs at all.  After the initial film, Nyoka appeared in comic books published by Fawcett, Charlton, and AC Comics.

Red Sonja (film): Red Sonja is a 1985 Dutch-American sword and sorcery action film directed by Richard Fleischer.  The film introduces Brigitte Nielsen as the title character with Arnold Schwarzenegger, Sandahl Bergman, Ronald Lacey, Ernie Reyes, Jr., Paul L. Smith and Pat Roach in supporting roles.  The film features the sword-wielding Marvel Comics character Red Sonja, created by Roy Thomas, who first appeared in Marvel's "Conan the Barbarian" series (#23) in 1973.  The film's character of Red Sonja was based on Red Sonya of Rogatino, a character created by Robert E. Howard appearing in his short story "The Shadow of the Vulture" (1934).  The film acknowledges that it was "based on the character created by Robert E. Howard" in the introductory credits.

Emma Steed: Miss Steed (Emma Steed), also known as Black Queen is a fictional character created by Warren Ellis and Carlos Pacheco, a mutant in the Marvel Comics Universe.  Her first appearance as Miss Steed was in "Excalibur" #96.  Emma Steed was an obvious homage to Emma Peel and John Steed, from the British television show "The Avengers".  Early art for the character, in fact, matched the appearance of Diana Rigg who played Mrs. Emma Peel.

Buddy Bradley: Harold "Buddy" William Bradley Jr., generally referred to as Buddy Bradley, is a comic book character created by Peter Bagge and the main protagonist in several of his comic books, most notably "Hate" and "Neat Stuff".  The character first appeared in Bagge's self-published "Comical Funnies" in 1981.  In the 1990s Buddy became an iconic symbol of Seattle underground culture, with the character being associated with slackerdom and the grunge movement, something which his creator sees as fairly unintentional on his part.  Bagge created Buddy as a fairly unlikeable character as a commentary on shallow hipster culture, but the character was immensely popular, with members of Generation X strongly identifying with Buddy and his problems.  In this way he may have been seen as an antihero and archetype of 1990s underground culture.  Bagge had the character enact storylines based on events from his past, such as his family life, adolescence and his move to Seattle in the 1980s.

Supporting paragraphs: Dreamslayer Dormammu
Answer: Stan Lee and Steve Ditko