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) "Split!" and reassembled himself by shouting "Xam!" He had a young human ward named Billy Baxton. This short-lived Captain Marvel was credited in the comic as being "based on a character created by Carl Burgos". Legal issues with Marvel Comics over the use of "Marvel" in the title led to M.F. ceasing publication after five issues, and accepting a $4500 settlement from Marvel. When superhero comics became popular again in the mid-1960s in what is now called the "Silver Age of Comic Books", Fawcett was unable to revive Captain Marvel, having agreed to never publish the character again as part