The Role Scarlett Johansson Desperately Wanted—And Only Got After Emily Blunt Said No

Hollywood history is filled with pivotal moments—casting shake-ups that don’t just shape a single film, but alter the entire trajectory of an actor’s career. For Scarlett Johansson, that moment came when she was given a second chance at a role that would redefine her image, thanks to a twist of fate involving Emily Blunt.

Typecasting and the Road to Reinvention

Long before she became synonymous with Marvel’s Black Widow, Johansson was facing the kind of typecasting that so often shadows young female stars. Despite early praise for mature performances in films like The Horse Whisperer and the breakout Lost in Translation, Johansson found herself repeatedly cast as “the girlfriend,” “the other woman,” or “a sex object.” As she recalled in a 2025 Vanity Fair interview, “After Lost in Translation, every role that I was offered for years was ‘the girlfriend,’ ‘the other woman,’ a sex object—I couldn’t get out of the cycle.”

A string of roles in Woody Allen films, The Nanny Diaries, and ensemble comedies further cemented her as Hollywood’s go-to ingenue, but Johansson longed for a change—a project that would shatter expectations and open new doors.

The Marvel Role That Almost Wasn’t

That opportunity seemed to arrive in the most unexpected package: Iron Man 2 (2010). The role of Natasha Romanoff, aka Black Widow, was unlike anything she’d done before—a complex, physical, action-driven part that offered a chance to break away from type. The only problem? Johansson wasn’t the studio’s first choice.

Marvel initially cast Emily Blunt, then riding high from acclaimed roles in Sunshine Cleaning and The Young Victoria. “It felt like everything was aligning, and then it didn’t happen,” Johansson admitted, recalling her devastation at losing out on the part. “And I was really devastated by it.” But as fate would have it, Blunt was forced to drop out due to scheduling conflicts. Johansson got the call, and suddenly, everything changed.

A Career Reborn

Stepping into the MCU didn’t bring instant critical acclaim, but it did what Johansson hoped: it reset the industry’s perception of her. No longer boxed in by romantic tropes, she was now seen as a bankable action star—and, more importantly, as an actress capable of reinvention.

From Iron Man 2 onward, Johansson was able to seek out the kind of complex, challenging roles she craved. Her work in Under the Skin, Her, and the Oscar-nominated Jojo Rabbit and Marriage Story—both in the same year—might never have happened had she not donned Black Widow’s leather suit.

The Marvel Effect

Ironically, while the MCU is often criticized for eclipsing smaller, character-driven films, Johansson’s Marvel tenure opened the very doors she needed. Her journey from ingenue to icon is a testament to the strange alchemy of Hollywood success: sometimes the role that changes your life is the one you nearly didn’t get.

As for Emily Blunt? She went on to headline her own blockbusters and remains a sought-after talent. But for Scarlett Johansson, the chance to play Black Widow wasn’t just a job—it was her ticket to agency, artistic freedom, and one of the most remarkable second acts in modern Hollywood.