Chastain, 37, said nothing was confirmed as she wanted a strong role in the movie, reported Vanity Fair.
"We've talked about aligning our forces in the future. And here's the thing with me... If you're going to be in a superhero movie, you only get one chance. You're that character forever. So why do a superhero movie and play the boring civilian?" she said.
"Whatever it is, I want a fight scene. I could be an incredible villain. I could be a hero. I want a cool outfit, and I want to kick ass," she added.