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
Legacy hero Legacy hero A legacy hero is a type of character, usually a superhero, that is the descendant or relative of an already or previously existing hero who either inherits or adopts the name and attributes of the original. One of the earliest examples of this character type was comic strip hero The Phantom, assumed to be immortal by his enemies—various members of a single family, the descendants of Christopher Walker. The term is used most often to refer to characters published by DC and Marvel comics. Family franchises such as DC's Batman, Superman, Wonder Woman, Atom, Black Canary, Captain Marvel,