The Marvel Cinematic Universe is known for its secrecy when it comes to the new castings. Now, rumors suggest that ‘Stranger Things’ star Millie Bobby Brown could be the next major addition.
With ‘Avengers: Doomsday’ and ‘Avengers: Secret Wars’ on the horizon, directors Joe and Anthony Russo are teasing the possibility of Brown stepping into the Marvel multiverse. Additionally, she isn’t the only ‘Stranger Things‘ star rumored to join the MCU.
Russo Brothers Want To Include Millie Bobby Brown In “Every Project”

In a recent interview with Entertainment Tonight, Joe Russo praised Millie Bobby Brown as an actor. “Millie is on the list for every project,” he stated. He highlighted her passion for her work, her commitment to promoting films, and even her habit of bringing rescued dogs to set.
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That kind of energy and dedication is exactly what Marvel looks for in its stars. The Russos have already worked with Brown on Netflix’s ‘The Electric State.’ However, one question that remains is what role she could take on. With X-Men slowly making its way into the MCU, Brown could be a strong contender for a fan-favorite mutant like Rogue or Kitty Pryde.
So, if Marvel were to cast her, it would likely be for a major role. Of course, all of this remains speculation for now. Brown has not officially entered discussions with Marvel Studios yet. Moreover, Marvel’s Multiverse Saga is shaping up to be a blend of nostalgia and new beginnings. Robert Downey Jr.’s return as the villainous Doctor Doom will bring back a familiar face, while younger stars like Brown could become the new faces of the franchise.
‘Stranger Things’ Actress Sadie Sink Is All Set To Join The MCU

While Millie Bobby Brown’s potential entry into the MCU remains a mystery, her ‘Stranger Things’ star Sadie Sink is reportedly already officially onboard. The actress has been cast in ‘Spider-Man 4’, the upcoming installment in Tom Holland’s beloved franchise.
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However, Marvel has yet to confirm the news of revealing which character she’ll be playing, and that uncertainty has led to wild speculation. One of the most persistent rumors? That Sink might be the new Jean Grey, the powerful telepathic mutant and key member of the X-Men. Another rumor suggests that the actress will be playing the beloved red-headed Mary Jane Watson.
While fans argue that Marvel won’t replace Zendaya with Sink, the possibility is very much real as Zendaya is busy with other projects. Additionally, when asked about the speculation during an interview on the Happy Sad Confused podcast, Sink shut down the rumors. “It’s news to me,” she said with a smile. “The rumors are really cool, though. It’s an awesome rumor.”
However, it’s important to note that she didn’t deny anything, which only fuels more curiosity. Moreover, despite not revealing much, Sink expressed excitement at the idea of being part of the MCU in the long term. “It’s super exciting to potentially be committed to playing a Marvel character for years to come,” she admitted.
With ‘Spider-Man 4’ set for release in 2026 and ‘Avengers: Doomsday’ and ‘Secret Wars’ in development, Marvel has big things coming. Adding the beloved ‘Stranger Things‘ stars to the mix only adds more to the excitement surrounding the projects. The MCU thrives on strong performances and character-driven storytelling, and both Brown and Sink have proven themselves.