Roy William Thomas, Jr. is an American comic book writer and editor. He was Stan Lee's first successor as editor-in-chief of Marvel Comics. He is possibly best known for introducing the pulp magazine hero Conan the Barbarian to American comics, with a series that added to the storyline of Robert E. Howard's character and helped launch a sword and sorcery trend in comics. Thomas is also known for his championing of Golden Age of comic book heroes, particularly the 1940s superhero team the Justice Society of America. He has also had lengthy writing stints on Marvel's X-Men and Avengers, and DC Comics' All-Star Squadron, among other titles. Thomas was inducted into the Will Eisner Comic Book Hall of Fame in 2011.