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 Britain IGN ranked Captain Britain as the 79th greatest comic book hero of all time stating, "as he is the only Marvel hero to receive the benefit of Alan Moore's pen, the character enjoys very rarefied status in the Marvel Universe", and 34th in their list of "The Top 50 Avengers". An article in the Times of London in March 2016 stated, "Captain Britain's nemesis turned out to be lack of popularity, however, and his adventures ended after a year". A number of trade paperbacks have been released collecting both the early run and Alan Moore's updated version (his run being