Before revision: The success in 1938 of Action Comics and its lead hero Superman marked the beginning of the Golden Age of Comic Books, in which the superhero genre was prominent .
After revision: The success in 1938 , DC Comics superhero comic book such as, in 1939, superhero comic book such as Detective Comics original superhero character including Batman and in 1941, superhero comic books such as All Star Comics and Sensation Comics original superhero character including Wonder Woman Action Comics and its lead hero Superman marked the beginning of the Golden Age of Comic Books, in which the superhero genre was prominent .