Captain Marvel (DC Comics) abilities. Based on book sales, the character was the most popular superhero of the 1940s, outselling even Superman. Fawcett expanded the franchise to include other "Marvels", primarily Marvel Family associates Mary Marvel and Captain Marvel Jr., who can harness Billy's powers as well. Captain Marvel was also the first comic book superhero to be adapted into film, in a 1941 Republic Pictures serial titled "Adventures of Captain Marvel". Fawcett ceased publishing Captain Marvel-related comics in 1953, partly because of a copyright infringement suit from DC Comics, alleging that Captain Marvel was a copy of Superman. In 1972, DC licensed the
The Super Hero Squad Show ABC3, in October 2009. A massively multiplayer online game, entitled "Marvel Super Hero Squad Online" was released to the public in April 2011. The game is heavily based on the "Super Hero Squad" franchise, with "The Super Hero Squad Show"'s character designs returning. A four-part comic book series based on the show called "Marvel Super Hero Squad" was released in the fall of 2009. The series was a success and Marvel renewed the series in January 2010 as an ongoing series, now entitled: "Super Hero Squad". The comic does not feature only characters from the show, but also characters outside