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
Adventures of Captain Marvel the Republic serial as his initial inspiration in his handling of the Captain Marvel characters. Adventures of Captain Marvel Adventures of Captain Marvel is a 1941 American 12-chapter black-and-white movie serial from Republic Pictures, produced by Hiram S. Brown, Jr., directed by John English and William Witney, that stars Tom Tyler in the title role of Captain Marvel and Frank Coghlan, Jr. as his alter ego, Billy Batson. This serial was adapted from the popular Captain Marvel comic book character then appearing in Fawcett Comics publications "Whiz Comics" and "Captain Marvel Adventures". "Adventures of Captain Marvel" was the 21st of