Sadie Sink’s Mysterious Spider-Man Character Be More Important Than Fans Think

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With the final season of Stranger Things almost here, fans are on the edge of their seats wondering if Eleven and her friends will survive the terrifying Demogorgon or Vecna. But Sadie Sink, the actress who plays Max Mayfield, has a lot going on beyond that! She’s quickly becoming a rising star, and is set to appear in both the upcoming Spider-Man: Brand New Day and the highly anticipated Avengers: Secret Wars.

While her exact role in Tom Holland’s next Spider-Man movie hasn’t been revealed, it seems like a significant one for the Marvel Cinematic Universe. According to Deadline, Sadie Sink will finish filming Spider-Man: Brand New Day in December and then start working on the 2027 sequel to the upcoming Avengers: Doomsday, starring Robert Downey Jr.

There’s talk that filming for Avengers: Secret Wars might start as soon as summer 2026. This would give Sadie Sink very little break after a busy 2025, which already includes finishing the last season of Stranger Things, promoting its finale, and filming a project with Tom Holland, Zendaya, and others for Marvel Studios. She also continues to pursue her work in theater, adding to her demanding schedule.

“I thought this was the Stranger Things premiere. I wasn’t prepared. Mmm, no.”

Don’t expect her to reveal anything about her plans for Spider-Man: Brand New Day. She didn’t share any details with Entertainment Weekly when unexpectedly asked on the red carpet recently.

Sadie Can Really Sink Her Teeth Into Marvel

Here’s where things get interesting: speculation about who Sadie Sink could play in the Marvel Cinematic Universe. With the X-Men franchise reboot on the horizon, many wonder if she might take on the role of Jean Grey. Currently, there’s mystery surrounding whether Famke Janssen will reprise her role, as she claims to have had no contact with Marvel Studios about returning. Sink certainly has the look, with her striking red hair, but Jean Grey isn’t the only character she could potentially portray given her talent.

Given that this movie is part of a larger, interconnected multiverse leading to future Avengers films, fans are speculating about the identity of a mysterious character. Could it be Mayday Parker, Spider-Man’s daughter from another universe who eventually becomes Spider-Girl or Spider-Woman? Or perhaps Rachel Cole, an ally of the Punisher? Other possibilities include Shathra, also known as Spider-Wasp, or Firestar, a friend of Spider-Man with the power to control fire and heat.

Sink isn’t revealing her plans, but her appearance in Avengers: Secret Wars suggests she could have a major impact on the Marvel universe, potentially as a hero or villain – and anything is possible.

Spider-Man: Brand New Day hits theaters worldwide on July 31, 2026.

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2025-11-18 20:21