Mystique is one of the most famous mutants in Marvel Comics, with her blue skin color, ability to change form, and morally dubious traits. The character first appeared in Fox’s original X-Men trilogy before a younger version was introduced in the prequel films. As Marvel’s multiverse saga gains momentum, Mystique will be making a comeback in Avengers: Doomsday, reintroducing one of the franchise’s most iconic mutants to the big screen after nearly 20 years.

Behind the iconic mutant is a career that spans modeling, film, and television.

Rebecca Romijn will reprise Mystique in Avengers: Doomsday. She began her career as a fashion model in the early 1990s before successfully transitioning into acting. Romijn's breakout role was in 2000's X-Men, starring as Mystique, reprising the role of the shape-shifting mutant in X2 (2003) and X-Men: The Last Stand (2006).

Her performance became one of the defining portrayals of the original X-Men film series, with the role requiring hours of blue body makeup and prosthetics for every shoot. She later had an uncredited cameo in X-Men: First Class (2011), before Jennifer Lawrence took over the younger Mystique in the prequel films.  

Outside of X-Men, Romijn has enjoyed a diverse acting career, including roles in films such as Femme Fatale, The Punisher, and Rollerball. She has also appeared in television series like Ugly Betty, The Librarians, King & Maxwell, Star Trek: Discovery, and Star Trek: Strange New Worlds. She further provided the voice of Lois Lane in the DC Animated Movie Universe. In 2025, Marvel announced that Romijn would be coming back to one of her most popular roles as Mystique in Avengers: Doomsday, a long-awaited return for the character.

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Away from the cameras, Romijn's personal journey has been just as noteworthy.

Rebecca Romijn was born in Berkeley, California, the daughter of a Dutch father and an American mother of Dutch descent. She studied music at the University of California, Santa Cruz, but dropped out of college to pursue a successful modeling career that took her to Paris for several years. Romijn was married to actor John Stamos from 1998 to 2005. She later married actor Jerry O'Connell in 2007, and they have twin daughters born in 2008. 

Now, Romijn reprises her role as Mystique in Avengers: Doomsday, reviving one of the most loved characters from the original X-Men movies. As Marvel continues the process of introducing legacy mutants into the MCU, her return is expected to be a moment of nostalgia for longtime fans, as well as introducing Mystique to a new generation of audiences. The role marks a full-circle moment in Romijn's career as she returns to the character that helped define her Hollywood journey.

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Will Rebecca Romijn's return as Mystique reshape the future of the MCU? Let us know in the comments.