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 (Marvel Comics) Marvel is Phyla-Vell, Genis-Vell's younger sister. She was created by Peter David and Paul Azaceta in "Captain Marvel" (vol. 5) #16 (January 2004). Her name is a taxonomical pun on the part of writer Peter David. Phyla is created when Genis, an only child, recreates the universe and, in doing so, creates various anomalies which result in his mother being restored to life and his sister coming into existence. She is last seen romancing Moondragon. Phyla-Vell appears in the "Annihilation" event, fighting alongside Nova's United Front in an effort to stop the destructive armies of Annihilus. She becomes the new