In an unusual twist, Sadie Sink learned about her casting in Spider-Man: Brand New Day through online speculation before Marvel officially confirmed it. During her appearance on The Tonight Show, she expressed the surreal nature of the situation, noting the constant fan theories surrounding her role, with Jean Grey being the most discussed possibility. Although details about her character remain undisclosed, reports suggest she might appear in both Spider-Man and Avengers: Secret Wars. Directed by Destin Daniel Cretton, the film is set to release on July 31, 2026, featuring Tom Holland as Spider-Man and a returning cast that includes Zendaya and Florence Pugh.
