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
Fantastic Four (comic book) Fantastic Four (comic book) Fantastic Four is the name of several comic book titles featuring the team Fantastic Four and published by Marvel Comics, beginning with the original "Fantastic Four" comic book series which debuted in 1961. As the first superhero team title produced by Marvel Comics, it formed a cornerstone of the company's 1960s rise from a small division of a publishing company to a pop culture conglomerate. The title would go on to showcase the talents of comics creators such as Roy Thomas, John Buscema, George Pérez, John Byrne, Steve Englehart, Walt Simonson, and Tom DeFalco, and is