Captain Marvel was pretty successful and is probably in line for a sequel, which will hopefully be better than the first movie. While not bad, the movie was pretty flawed and a second film could iron those out for a much better story featuring Carol Danvers. Of all the complaints fans have for the film, one of them does have some legitimacy to it; why did they have to make Mar-Vell a woman?
Speaking with ComicBookMovie, Executive Producer Jonathan Schwartz revealed that there really were no plans for Mar-Vell, the original Marvel Captain Marvel, to appear in the film. As for why they decided to make Mar-Vell a woman, it had to do with making the movie accessible for people not familiar with the lore and making it Carol's story.
Here is what Schwartz had to say:
It probably would have been better if they decided not to add the character at all, though it did end up being a solid element to the film. Having Mar-Vell protect the Skrulls was in-character for the hero, even if they turned him into a woman. Mar-Vell is pretty outdated though and we should probably just read his older comics instead of wanting him to appear in movies.
Captain Marvel is now available on digital and Blu-Ray.
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