Sadie Sink says she learned about her ‘Spider Man’ role from online theories

Sadie Sink told Jimmy Fallon she first realised she’d be in ‘Spider Man: Brand New Day’ after seeing online theories

Sadie Sink has shared a surprise detail about how she discovered she would be part of the Marvel film Spider‑Man: Brand New Day, admitting that she first learned about her casting from online speculation rather than an official announcement. The Stranger Things star revealed the story during an appearance on The Tonight Show Starring Jimmy Fallon, where she spoke about the long‑running rumours surrounding her role in the upcoming blockbuster.

Sink told host Jimmy Fallon that while she was aware fans had theorised she might be joining the cast, she didn’t expect those conversations to turn out to be accurate. “Before I got cast in Spider‑Man, there was speculation online that said, ‘Sadie Sink is gonna be in the new Spider‑Man,’” she said. “I was like, ‘I am?’ Sure enough, two days later, they asked me to do it.” Her comments highlighted how unpredictable the path to finding out about major roles can be, even for the actors themselves.

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The actress acknowledged that the rumours were a mix of excitement and torture, given how much speculation builds up around Marvel projects before details are revealed. Without confirming any specifics about her character, Sink said there seem to be “a new character every week” in fan rumours, reflecting the countless theories circulating online about who she might play.

Spider‑Man: Brand New Day stars Tom Holland reprising his role as Peter Parker and is scheduled for release on July 31, 2026. While details about Sink’s role remain under wraps, the film’s ensemble also includes familiar faces like Zendaya and Jacob Batalon, alongside new cast members such as Jon Bernthal, Mark Ruffalo, Michael Mando, and Marvin Jones III.

Sink’s revelation has sparked fresh discussion in fan circles, especially since Marvel has kept her exact character a secret. Prior to the casting news breaking, some rumours linked her to major comic book figures like Jean Grey or other legacy characters, though nothing has been confirmed. Her anecdote about learning she was cast “from the internet” has resonated with fans, many of whom felt a personal connection to the online buzz when the rumours first began.