The 20-year-old rising star is being eyed by Marvel Studios bosses to go toe-to-toe with Scarlett Johansson in the first solo movie for the Avengers: Endgame character, according to The Hollywood Reporter.
Pugh's exact character identity is being kept under wraps but the publication mentions that she'll be playing a rival spy described as Black Widow's "moral opposite".
A role in Black Widow would be the latest huge career breakthrough for Pugh, who broke through last year starring in The Night Manager producers' Little Drummer Girl series.
Since playing an amateur spy in that show, Pugh had a supporting role as the queen consort Elizabeth de Burgh in Netflix's Outlaw King and played WWE star Paige in Sundance Film Festival hit Fighting with My Family. She'll next appear in the star-studded remake of Little Women.
Black Widow is going to make history by having the Marvel Cinematic Universe's first-ever solo female director, in Berlin Syndrome and Somersault's Cate Shortland.
While the movie is guaranteed to be action-packed, Marvel Studios boss Kevin Feige recently denied reports that it will have an R-rating.
"It never was going to be," he insisted. "Somebody writes, 'I hear it's R-rated!' And then everybody writes it up."
The film doesn't yet have a release date since Marvel is holding off announcing all future plans until after Avengers: Endgame and Spider-Man: Far From Home.
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