Captain Marvel

Ms. Marvel is a superhero and member of the Avengers.

The Avengers: Earth's Mightiest Heroes
When Major Carol Danvers, an old friend of Wasp, is shielded from a Kree Sentry attack by Philip Lawson (actually the Kree Captain Mar-Vell), she develops Kree-like powers.

The second time she finds the Avengers, she dons a superhero costume and calls herself Ms.Marvel. When she is asked to join the Avengers, she quickly accepts.