The internet had a spidey sense that Sadie Sink was going to be a part of the Spider-Man franchise.
During her Monday appearance on The Tonight Show, Jimmy Fallon noted that the Stranger Things star will next be seen in Tom Holland’s fourth Spider-Man film. Fallon acknowledged that Sink can’t share much about the project — specifically what character she’s playing — which she admitted was “torture.”
“There’s so much speculation, too,” she said, adding, “I feel like there’s a new character every week” that fans theorize she might be portraying. The Tony Award nominee notably shared that before she got the offer to appear in Spider-Man: Brand New Day, she saw fan theories online that she’d be involved in the project.”
“I found out through online theories. Like, before I got cast in Spider-Man, like, there was speculation online that said, ‘Sadie Sink is going to be in the new Spider-Man,’” she explained. “I was like, ‘Hmm? I am?’ And sure enough, two days later, they asked me to do it. So yeah, those theories, there’s sometimes some truth to it.”
It was revealed last May that Sink joined the cast of Brand New Day, though her role has been kept strictly under wraps. In an interview with The Hollywood Reporter, the actress said that “it was crazy” when she found out she’d be joining the Marvel Cinematic Universe.
“I found out while we were wrapping up season five [of Stranger Things]. Spider-Man has always been my favorite. I love Spider-Man. I love Tom’s Spider-Man, especially,” she said, adding that keeping Marvel-related secrets came easily due to her work on Stranger Things.
“I had an amazing time working on that film. I can’t wait to talk about it more. There’s so much I want to share,” Sink said. “That’s why I feel like keeping Stranger Things secrets are kind of easy because I have so many Spider-Man secrets I’m sitting on that feel even more secretive.”
Sink will star in Brand New Day alongside Holland, while Zendaya and Jacob Batalon return as MJ and Ned. Other new additions to the cast include Mark Ruffalo, who is reprising his longtime MCU role as Bruce Banner/the Hulk; Michael Mando, who played the Scorpion in Spider-Man: Homecoming; and Jon Bernthal, as the Punisher.
Destin Daniel Cretton serves as director, while Chris McKenna and Erik Sommers returned to write the script. Brand New Day will hit theaters next summer on July 31, 2026.
