Rebecca Romijn Jon Kopaloff/Getty Images for Paramount+ Share on Facebook Share on X Share to Flipboard Send an Email Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Print the Article Post a Comment Rebecca Romijn is sharing an update on her return as Mystique in the highly-anticipated Avengers: Doomsday. At The Hollywood Reporter's San Diego Comic-Con suite, the Star Trek: Strange New Worlds star admitted that she wasn't sure if she's finished filming for the forthcoming Marvel film because the script isn't fully complete. "[I'm] not quite sure," she said when asked if she was done shooting her scenes. "The script hasn't - they haven't finished writing it. It's been very, very fun, and we don't know yet. They keep everything very close to the vest themselves in an effort to keep everything under wraps." Related Stories TV Starz Unleashes 'Spartacus: House of Ashur' Trailer TV 'Star Trek: Strange New Worlds' Delights Comic-Con With Upcoming Episode, Teases All-Puppet Installment At THR's suite at #SDCC, #StarTrek: Strange New Worlds' Rebecca Romijn talks about what it was like returning to the role of 'Mystique' for #AvengersDoomsday pic.twitter.com/BTCNKcUmwS- The Hollywood Reporter (@THR) July 26, 2025 Romijn kept her lips sealed when asked if she's read the entire script, noting, "I cannot confirm nor deny that I have read the entire script." She also admitted she "can't say" who she's filmed scenes alongside, but it was a "surreal" experience shooting with some of her original X-Men co-stars with a new, blended cast. "It was very surreal to be with my old cast as well as a new cast. I had crazy dreams while I was there for a large chunk of shooting. Like, really kind of regressive dreams," she shared. "It was very strange, my brain was really trying to organize. Like, wow, this is a character I played 25 years ago, 20 years ago. Yeah, [it was] very surreal." The actress also shared what it was like revisiting the role of Mystique after nearly 20 years since she last portrayed the character in 2006's X-Men: The Last Stand. (Romijn made a brief cameo in 2011's X-Men: First Class.) "Oh, I know her very well. I went back in with full ownership of her. It was very nice to go back and play that character, 'cause I had imposter syndrome in the very beginning," she said. "I thought, maybe at the very beginning, I was just cast because I happened to be the model who was available to play Mystique at that moment. I mean, I auditioned and I got the role, because when you're very young, you're like, Do I deserve to be here? And I did not have that going back this time. It was a very different experience." Marvel revealed the Avengers: Doomsday cast in late March, which notably includes a string of actors from 20th Century Fox's X-Men universe. Joining Romijn from the inaugural 2000 film include Patrick Stewart as Professor X, Ian McKellen as Magneto and James Marsden as Cyclops. The Traitors host Alan Cumming also returns as Nightcrawler, whom he played in X2: X-Men United, and Kelsey Grammer as Beast, from X-Men: The Last Stand. THR Newsletters Sign up for THR news straight to your inbox every day Subscribe Sign Up Winona Ryder Winona Ryder Says She Lost Film Role Over 'Heathers': "They Thought It Was Making Fun of Teen Suicide" Heat Vision Ryan Gosling Debuts New 'Project Hail Mary' Footage to Laughs at Comic-Con Richard Pryor Marlene Warfield, Actress in 'Network' and 'The Great White Hope,' Dies at 83 Heat Vision 'Coyote vs. Acme' Debuts First Footage as Will Forte Reflects on Salvaged Film: "I Had Given Up Hope" Heat Vision 'Fantastic Four' Box Office: 'First Steps' Pacing for $120M-$125M Launch in Notable Win for Marvel Richard Stermer Film Academy's Longtime Theater Manager Richard Stermer Is Retiring (Exclusive) Winona Ryder Winona Ryder Says She Lost Film Role Over 'Heathers': "They Thought It Was Making Fun of Teen Suicide" Heat Vision Ryan Gosling Debuts New 'Project Hail Mary' Footage to Laughs at Comic-Con Richard Pryor Marlene Warfield, Actress in 'Network' and 'The Great White Hope,' Dies at 83 Heat Vision 'Coyote vs. Acme' Debuts First Footage as Will Forte Reflects on Salvaged Film: "I Had Given Up Hope" Heat Vision 'Fantastic Four' Box Office: 'First Steps' Pacing for $120M-$125M Launch in Notable Win for Marvel Richard Stermer Film Academy's Longtime Theater Manager Richard Stermer Is Retiring (Exclusive)