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
Fantastic Four (comic book) Fantastic Four (comic book) Fantastic Four is the name of several comic book titles featuring the team Fantastic Four and published by Marvel Comics, beginning with the original "Fantastic Four" comic book series which debuted in 1961. As the first superhero team title produced by Marvel Comics, it formed a cornerstone of the company's 1960s rise from a small division of a publishing company to a pop culture conglomerate. The title would go on to showcase the talents of comics creators such as Roy Thomas, John Buscema, George Pérez, John Byrne, Steve Englehart, Walt Simonson, and Tom DeFalco, and is