Ms. Marvel is the name of several fictional superheroes appearing in comic books published by Marvel Comics. The character was originally conceived as a female counterpart to Captain Marvel. Like Captain Marvel, most of the bearers of the Ms. Marvel title gain their powers through Kree technology or genetics. Marvel has published four ongoing comic series titled Ms. Marvel, with the first two starring Carol Danvers, and the third and fourth starring Kamala Khan. Carol Danvers, the first character to use the moniker Ms. Marvel, first appeared in Marvel Super-Heroes #13 (March 1968) by writer Roy Thomas and artist Gene Colan as a non-superpowered officer in the United States Air Force. After being caught in an explosion with the Kree superhero Captain Marvel in Captain Marvel #18 (November 1969), Danvers resurfaces in Ms. Marvel #1 (January 1977) with super powers as result of the explosion which caused her DNA to merge with Captain Marvel's. As Ms. Marvel, Danvers becomes a mainstay of the superhero team The Avengers, beginning in The Avengers #171 (May 1978). Danvers goes on to use the codenames Binary and Warbird. In July 2012, Danvers assumes the mantle Captain Marvel in honor of its dead, original holder, Mar-Vell, after Captain America tells her that Mar-Vell would want her to have it.