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
Captain Marvel (DC Comics) and that Billy is a reporter for WHIZ Media, rather than a radio broadcaster. The Earth-5 Captain Marvel reappeared in "Final Crisis" #7, along with an army of Supermen from across the Multiverse to prevent its destruction by Darkseid. Following The New 52 Multiverse reboot, Earth-5 remains a Fawcett Comics-inspired setting, and is spotlighted in the comic book "The Multiversity: Thunderworld #1" (Feb 2015), a modernized take on the classic Fawcett "Captain Marvel" stories from writer Grant Morrison and artist Cameron Stewart. A female version of Captain Marvel is shown as a member of an alternate-future Justice League in "".