The young star who captured hearts in the supernatural world of Hawkins is now ready to conquer the vast Marvel Cinematic Universe. Sadie Sink, globally recognised for her role as Max Mayfield in the hit series Stranger Things, is officially making the leap from fighting Demogorgons to suiting up with Earth's Mightiest Heroes.
From Hawkins to the Halls of Marvel
According to a major report from the entertainment industry authority Deadline, Sink's journey into the MCU is set to be a significant one. Her first step will be in Tom Holland's Spider-Man: Brand New Day, scheduled for release on July 31, 2026. This film will serve as her formal introduction to the world of superheroes.
However, her stay in the MCU will extend far beyond a single appearance. The same report confirms that Sink has been cast in the highly anticipated ensemble epic, Avengers: Secret Wars. This massive project will be directed by the acclaimed Russo Brothers and is expected to begin filming in London in 2026, following the events of the preceding film, Avengers: Doomsday.
The Mystery of Her Superhero Role
While her casting is confirmed, the character Sadie Sink will portray remains one of the MCU's most exciting secrets. The studio has kept her role tightly under wraps, leading to widespread speculation among fans and industry insiders.
Several compelling theories are circulating:
- She might be stepping into the shoes of one of Spider-Man's iconic love interests, such as Gwen Stacy or Mary Jane Watson, given her involvement in the Spider-Man film.
- Another popular theory suggests she could be portraying the powerful X-Men mutant, Jean Grey. This would be a major move, signalling the full integration of the X-Men into the MCU.
Her involvement in Secret Wars, a film rumoured to bring back heroes from across Marvel's history, suggests her character will be pivotal, potentially setting her up for a long-term future within the franchise.
A New Chapter for a Rising Star
This move marks a monumental career shift for Sadie Sink. While she has already proven her acting chops in Stranger Things and acclaimed films like The Whale, joining the Marvel Cinematic Universe places her at the centre of global pop culture. Her casting in Avengers: Secret Wars is not just another role; it is a commitment to a character that could define her career for the next decade, making her a household name among superhero fans worldwide.
The stage is set for Sadie Sink to trade the eerie landscape of the Upside Down for the universe-spanning adventures of the MCU, and fans cannot wait to see which superhero (or villain) she becomes.