Captain Marvel (DC Comics) in unison, they can become adult superheroes as well. In "Whiz Comics" #25 (Dec 1941), Captain Marvel saves Freddy Freeman, a boy who had been left for dead by the evil Captain Nazi, and does for Freddy what the wizard did for him. By speaking the name "Captain Marvel," Freddy can become the superpowered Captain Marvel, Jr.. Unlike Billy, Freddy retains his 14-year-old appearance as a superhero. "Captain Marvel Adventures" #18 (Dec. 1942) introduced Billy and Freddy to Mary Bromfield, a rich girl who turns out to be Billy's long-lost twin sister. By saying the magic word "Shazam," Mary Bromfield
G.I. Joe: A Real American Hero (Marvel Comics) the hardcover "G.I. JOE: The Complete Collection, Vol. 1", intending to reprint all the stories in reading order. IDW also revived the original "G.I. Joe: A Real American Hero" as an ongoing series in 2010, with a special #155½ issue released on Free Comic Book Day, followed by issue #156 onwards in July 2010. G.I. Joe: A Real American Hero (Marvel Comics) G.I. Joe: A Real American Hero is a comic book that was published by Marvel Comics from 1982 to 1994. Based on Hasbro, Inc.'s "" line of military-themed toys, the series has been credited for making "G.I. Joe"