Sadie Sink has officially commented on the viral Jean Grey rumors tied to her involvement in Spider-Man 4. Although fans have been convinced she’s joining the MCU as the legendary X-Men character, the actress clarified how these theories started and why they gained so much momentum online. Additionally, Marvel’s secrecy surrounding her role only fuels more speculation.
Spider-Man 4 Rumors Spread Before Sadie Sink Joined the Film
During an interview promoting Spider-Man: Brand New Day, Sadie Sink explained that the Jean Grey rumors began well before her official involvement with Marvel.
“That was happening before I even knew that I would be working on this project.”
She recalled her surprise when she saw the speculation online:
“I was like, ‘Wait! What are people talking about?’”
Furthermore, she confirmed that Marvel reached out to her while she was still filming Stranger Things Season 5. This means the rumors weren’t based on any actual casting discussions at the time. Still, because she fits the look of many comic characters, the speculation only intensified.
Spider-Man 4 Continues to Hide Sadie Sink’s Secret MCU Character
Despite active filming in London, Marvel Studios is working extremely hard to keep Sadie Sink’s role a mystery. She has been spotted wearing oversized coats and full-body puffers designed to hide every detail of her costume.
She laughed about the situation during her interview:
“Tom can wave at the fans because people know who he is, but then you get a glimpse of me and I’m like a penguin.”
This level of secrecy is typical for Marvel, especially when introducing a new character. Moreover, the extra precautions suggest that Sink’s role may be more important than fans realize.
Fan Theories Surround Sadie Sink’s Possible MCU Character
Although Jean Grey has been the most-discussed theory, some fans also believe she might be playing Rachel Cole-Alves, a Punisher-connected anti-hero. Others speculate she could portray a brand-new MCU character created for the Spider-Man franchise.
Despite the excitement, Sink reminded everyone that appearances—especially hair—can easily change for a role.
“A lot of people forget that hair color can change, but, yeah, I understand all of the theories.”
Eventually, however, she decided to stop reading fan predictions altogether:
“People will just have to wait and see.”
Even so, her refusal to deny certain roles completely keeps the door open for even more speculation.
Sadie Sink’s Rising Career Beyond Spider-Man 4
In addition to her MCU debut, Sadie Sink continues expanding her career across multiple platforms. While she is best known as Max Mayfield in Stranger Things, she is also showing her range on stage and in film.
Notably, she will soon take on the role of Juliet in a West End production of Romeo & Juliet, marking another significant milestone in her theater career. Moreover, she recently earned her first Tony Award nomination for her performance in John Proctor Is the Villain.
These achievements highlight her growing influence in Hollywood and demonstrate why Marvel may see her as a major long-term asset.
With Marvel entering a new era post-Multiverse Saga, every new casting choice matters. Therefore, the addition of Sadie Sink to Spider-Man 4 suggests the studio may be preparing to introduce younger heroes or adapt storylines that require emotionally grounded performers.
Furthermore, fans believe her presence could signal deeper X-Men connections in the MCU. Even though she denied the Jean Grey rumors, her inclusion in a major film like Spider-Man 4 keeps the possibility of future crossovers alive. Ultimately, the mystery surrounding her character builds anticipation and strengthens the film’s hype long before its release.
Stay tuned for the latest updates on MCU’s upcoming projects, and subscribe to Marvel Updates’ YouTube channel.
