Sadie Sink has revealed that internet speculation accurately predicted her casting in the upcoming Spider-Man film before she was officially approached by Marvel Studios. The Stranger Things star discussed the phenomenon during an appearance on The Tonight Show Starring Jimmy Fallon, describing the secrecy around her role as “torture”.
Sink, who was cast in the fourth Spider-Man film, Brand New Day, in March, addressed the rampant online theories about her character. “There’s so much speculation… I found out through online theories. Before I got cast in Spider-Man, there was speculation online that said ‘Sadie Sink is going to be in the new Spider-Man’. I was like, ‘Hmm? I am?’ And sure enough, two days later, they asked me to do it,” she said.
The most persistent rumour suggests Sink will play Jean Grey, the telekinetic X-Men character previously portrayed by Famke Janssen and Sophie Turner. Sink told Entertainment Weekly in November that this speculation began long before she was involved. “That was happening before I even knew that I would be working on this project,” she explained.
Fans pieced together their theories from set photos showing Sink in a bulky puffer jacket with red hair visible. While acknowledging that “hair colour can change”, she urged patience: “People will just have to wait and see. I am excited for all of it to maybe be put to rest.”
Brand New Day stars Tom Holland as Peter Parker, alongside Zendaya, Jacob Batalon, Mark Ruffalo, Michael Mando and Jon Bernthal. Sink is also reportedly set to appear in Avengers: Secret Wars. The film is scheduled for release in cinemas on 31 July 2026.
