Ernesto Chan, born and sometimes credited as Ernie Chua, was a Filipino-American comics artist, known for work published by Marvel Comics and DC Comics, including many Marvel issues of series featuring Conan the Barbarian. Chan also had a long tenure on Batman and Detective Comics. Other than his work on Batman, Chan primarily focused on non-superhero characters, staying mostly in the genres of horror, war, and sword and sorcery.

Conan the Barbarian is a comics book title starring the sword-and-sorcery character created by Robert E. Howard, published by the American company Marvel Comics. It debuted with a first issue cover-dated October 1970 and ran for 275 issues until 1993. A commercial success, the title launched a sword-and-sorcery vogue in American 1970s comics.