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
Marvel Super Hero Squad (comics) Marvel Super Hero Squad (comics) Marvel Super Hero Squad is a comic book series based on "The Super Hero Squad Show". The series lasted for 4 issues then ended. Instead Marvel Comics started a monthly comic book series called Super Hero Squad, according to Marvel.com. On September 9, 2009, Marvel published the first "Super Hero Squad" comic - a one-shot reprinting several Super Hero Squad comic strips that had originally been published on Marvel.com. The one-shot was followed by a four issue limited series with stories inspired by the television series. At its conclusion, in March 2010, Marvel began publishing