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) "Split!" and reassembled himself by shouting "Xam!" He had a young human ward named Billy Baxton. This short-lived Captain Marvel was credited in the comic as being "based on a character created by Carl Burgos". Legal issues with Marvel Comics over the use of "Marvel" in the title led to M.F. ceasing publication after five issues, and accepting a $4500 settlement from Marvel. When superhero comics became popular again in the mid-1960s in what is now called the "Silver Age of Comic Books", Fawcett was unable to revive Captain Marvel, having agreed to never publish the character again as part