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
G.I. Joe: A Real American Hero (Marvel Comics) Joe: A Real American Hero" #1, it was the first time a commercial had ever been used to promote a comic book. Since the commercials were technically promoting the comic books rather than the toys, they allowed Hasbro to circumvent television regulations mandating that toy commercials could not contain more than ten seconds of animation. By not showcasing any characters and toys outside of the comic book context, they were able to include a full thirty seconds of animation. Marvel was paid $5 million by Hasbro to produce the commercials through its animation division Marvel Productions. Larry Hama relates the