Brie Larson had to meet a ''very high bar'' to be cast as Captain Marvel.

The Oscar-winning actress has been chosen to bring Carol Danvers and her alter-ego to life in the 2019 standalone movie about the superhero, but had to overcome some tough obstacles.

Marvel studio head Kevin Feige admitted to CinemaBlend: ''Listen, we set the bar very high with the first casting decision we ever made with Robert Downey Jr. as Tony StarkSince then, every single choice we've made, we have asked, 'Could it meet that bar?' Because that is what people expect of us, and that is what ... it's a very high bar.''

''Carol Danvers needs to be as rich and textured and real as the best of our characters. Maybe even more so. And we got very lucky that Brie - who has all of those attributes, and an Academy Award now - was still very interested in signing up and joining us to bring this character to life.''

The news was announced at San Diego Comic Con over the weekend and Brie, 26, also tweeted a picture of herself wearing a Marvel Studios hat and wrote: ''Call me Captain Marvel.''

She later added: ''Thanks for the love! I'm so excited to be part of the team.''

'Inside Out' screenwriter Meg LeFauve and Guardians of the Galaxy's Nicole Perlman are writing the script, however few plot details have been revealed.

Introduced in the comic books in 1977 and regarded as the biggest female hero in the Marvel universe, Carol Danvers is an air force pilot who becomes Captain Marvel after her DNA is fused with that of an alien during an accident.

As a result, she is gifted with super-powers of strength and energy and has fought alongside the Avengers, X-Men and S.H.I.E.L.D.