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
Captain Marvel (DC Comics) adventures feature him as a solo hero, he also fought evil on a regular basis accompanied by several other kids who share his powers to make up a superhero team called the Marvel Family (later referred to as the "Shazam Family" due to the issues DC Comics faced over the "Marvel" and "Captain Marvel" trademarks). The first members of the family, introduced in "Whiz Comics" #21 (Sept. 1941) and used sparingly afterwards, were the Lieutenant Marvels: three other boys from various parts of the United States who are also named "Billy Batson" and discover that, if they all say "Shazam!"