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 Jr. Junior returns to Fawcett (and "The Power of Shazam!" comic with issue #42) and makes amends with Captain Marvel. Another superhero team, The Outsiders, found themselves in a battle against Ishmael Gregor, who had killed Timothy Barnes and stolen his Sabbac powers. Captain Marvel Jr. arrived to help the Outsiders dispatch Sabbac, and some time later Junior would join the team for a brief period. Following the "Infinite Crisis" crossover event, Junior briefly joins the depleted Teen Titans roster during the weekly "52" comic book series, and is part of the wedding party for his former enemy Black Adam's marriage