Captain Marvel (DC Comics) Comics" #21 (1941) introduced the Lieutenant Marvels: three other boys named "Billy Batson" who could also become adult superheroes. Captain Marvel, Jr., the alter-ego of disabled newsboy Freddy Freeman, debuted in "Whiz Comics" #25 (1941). Mary Marvel, alter-ego of Billy's twin sister Mary Batson, first appeared in "Captain Marvel Adventures" #18 (1942). In contrast to Captain Marvel and the Lieutenants, both Mary Marvel and Captain Marvel, Jr. remained kids in superhero form, and were given their own eponymous books in addition to appearing as the lead features in "Master Comics" and "Wow Comics", respectively. Captain Marvel, Captain Marvel Jr., and
Captain Marvel (DC Comics) Cary Grant and Jack Oakie were made as well. Fawcett Publications' founder, Wilford H. Fawcett, was nicknamed "Captain Billy", which inspired the name "Billy Batson" as well as Marvel's title. Fawcett's earliest magazine was titled "Captain Billy's Whiz Bang", which inspired the title "Whiz Comics". In addition, Fawcett took several of the elements that had made Superman the first popular comic book superhero (super-strength and speed, science-fiction stories, a mild-mannered reporter alter ego) and incorporated them into Captain Marvel. Fawcett's circulation director Roscoe Kent Fawcett recalled telling the staff, "Give me a Superman, only have his other identity be a