Superhero comics Innocent" and the investigations of The Senate Subcommittee hearings on juvenile delinquency. Beginning in the 1950s, DC began publishing revised versions of their 1940s superhero characters such as The Flash and Green Lantern with more of a science fiction focus. Marvel Comics followed suit in the 1960s, introducing characters such as Spider-Man, the Fantastic Four, the Hulk, Thor, the X-Men and Iron Man who featured more complex personalities which had more dramatic potential. Superhero Comics became much more political and dealt with social issues such as the short-lived run of "Green Lantern/Green Arrow" by Denny O'Neil and Neal Adams and
Marvel Comics brand were the science-fiction anthology "Journey into Mystery" #69 and the teen-humor title "Patsy Walker" #95 (both cover dated June 1961), which each displayed an "MC" box on its cover. Then, in the wake of DC Comics' success in reviving superheroes in the late 1950s and early 1960s, particularly with the Flash, Green Lantern, and other members of the team the Justice League of America, Marvel followed suit. In 1961, writer-editor Stan Lee revolutionized superhero comics by introducing superheroes designed to appeal to older readers than the predominantly child audiences of the medium. Modern Marvel's first superhero team, the titular