Captain Marvel can refer to Carol Danvers (the better known version) or Captain Mar-Vell, her male predecessor. Use with the [marvel] tag. Use for questions about the character(s) and not merely questions that mention them. For questions about the DC universe hero, use the [shazam] tag. For questions about the 2019 film use [captain-marvel-2019].

Originally, the hero was a Kree named Captain Mar-Vell. Humans, hearing his name, simply started calling him Captain Marvel.

Captain Mar-Vell

A consort of his, Carol Danvers, eventually became half Kree and gained powers similar to his. When Mar-Vell left Earth, Carol began to call herself Ms Marvel and became a hero in her own right. Eventually she took the title of Captain Marvel. The Danvers work makes up most of the comics under the name.

Captain Marvel

See also Captain Marvel vs Ms Marvel clarification