'He was so relaxed': Sadie Sink shares what it was like working with Tom Holland in 'Spider-Man' 4

Sadie Sink says Tom Holland's welcoming nature helped her navigate the secrecy surrounding her Marvel debut with confidence
Sadie Sink praised Tom Holland for making her feel at ease while filming 'Spider-Man: Brand New Day' (Getty Images, Rodin Eckenroth/Getty Images)
Sadie Sink praised Tom Holland for making her feel at ease while filming 'Spider-Man: Brand New Day' (Getty Images, Rodin Eckenroth/Getty Images)

LOS ANGELES, CALIFORNIA: Sadie Sink is finally opening up about what it was like stepping into the Marvel Cinematic Universe (MCU). The 'Stranger Things' star, who joined 'Spider-Man: Brand New Day' in a mysterious role alongside Tom Holland, has shared new details about working with the actor for the first time.

While remaining careful not to reveal any major plot points or character details, Sink spoke warmly about Holland's presence on set and how he made her transition into one of Hollywood's biggest franchises much easier. She described the actor as relaxed and welcoming while filming 'Spider-Man: Brand New Day'.

'Spider-Man: Brand New Day' is set to hit theaters on July 31. 

Sadie Sink attends Netflix's 'Stranger Things' Season 5 premiere at on November 06, 2025 in Hollywood, California. (Cover Image Source: Getty Images | Photo by Axelle/Bauer-Griffin/FilmMagic)
Sadie Sink attended Netflix's 'Stranger Things' Season 5 premiere in Hollywood, California (Axelle/Bauer-Griffin/FilmMagic, Getty Images)

Sadie Sink says Tom Holland made her feel at ease on the 'Spider-Man' set

Speaking about her experience filming 'Spider-Man: Brand New Day' with Nylon, Sink described Holland, "He was just so relaxed and open, and I felt very at ease." She admitted that stepping into such a major franchise was overwhelming at first, especially since many of the actors had already worked together for years.

Sink also acknowledged the 'Spider-Man' franchise's immense scale and said becoming part of it was a surreal experience. She noted that Marvel's secrecy was on another level, revealing that she did not receive the script until she arrived in London for filming. 

Tom Holland lights The Empire State Building on March 18, 2026 in New York City. (Photo by John Nacion/Getty Images for Empire State Realty Trust)
Tom Holland lit the Empire State Building in New York City (John Nacion/Getty Images for Empire State Realty Trust)

The actress shared, "It was interesting stepping into that space and being a little bit of an outsider in that way, but he could not have been more welcoming, and just the whole crew in general."

What is Sadie Sink's role in 'Spider-Man: Brand New Day'?

Despite months of speculation, Marvel has still not confirmed which character Sink is playing. Her role remains one of the film's biggest mysteries, with the studio carefully avoiding any official reveal in trailers or promotional material.

"I knew that Marvel was a big deal and had a big brand, especially Spider-Man,” Sink said. “I know there's a huge fan base, but it feels really big. I think these blockbuster movies are a whole different beast."

What is confirmed is that 'Spider-Man: Brand New Day' marks Sink's debut in the Marvel universe. Since her casting was announced, speculation over her character has run wild across social media.

A screenshot of Tom Holland during the filming of 'Spider-Man: Brand New Day' (Cover image credit: YouTube | Sony Pictures Entertainment)
Tom Holland appeared in a promotional clip from the set of 'Spider-Man: Brand New Day' (Sony Pictures Entertainment/YouTube)

One popular theory suggests she could play Jean Grey, the powerful X-Men mutant known for her psychic and telekinetic abilities. Another claims she may portray Lily Hollister (Menace), a Goblin-inspired villain.

Others believe she could be Felicia Hardy (Black Cat), the iconic cat burglar and one of Spider-Man's best-known love interests. However, Marvel has confirmed none of these theories. In fact, the studio has kept her role so tightly under wraps that Sink does not appear in the film's trailer.

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