This could be Sadie Sink’s Spider-Man: Brand New Day role and it’s not Gwen Stacy
Sadie Sink is confirmed to appear inSpider-Man: Brand New Day, but her exact role is yet to be officially revealed. Thanks to a new rumor, we may know the answer.
TheMCU’snextSpider-Manmovie has a stacked cast: Holland is back, along with Zendaya (MJ) and Jacob Batalon (Ned), while Jon Bernthal (The Punisher), Mark Ruffalo (The Hulk), and Michael Mando (Scorpion) will also appear.

The biggest question mark hangs over Sink. TheStranger Thingsstar joined the cast in March this year, with basically no details about who she’s playing or if she’ll be in the franchise in a wider capacity beyond Brand New Day.
There have been loads of predictions, like Gwen Stacy, Jean Grey,Mayday Parker, and even another version of MJ. However, what if it’s someone else entirely?

Sadie Sink rumored to play “Carly” in Spider-Man: Brand New Day
According toDivinity Seeker, Sink is rumored to play an amalgamation of two characters from the Marvel comics, and she’ll be called Carly in the film.
“Carly is a brilliant forensic scientist who becomes a mysterious ally to Peter Parker, but her impulsive investigative instincts lead her to uncover a shadowy organization – ultimately forcing her to seek Peter’s help to survive,” the page claims.

📢🕷 We can exclusively confirm that Sadie Sink will portray a “brand new” character named Carly in the upcoming Spider-Man: Brand New Day movie – and the twist is that she is an amalgamation of two characters from the comics.Carly is a brilliant forensic scientist who becomes…pic.twitter.com/nZ2KeH8xD5
“Her true identity is unveiled in a jaw-dropping reveal at the film’s climax, and let’s just say she has deeply personal motivations for inserting herself into Peter’s world so abruptly. Expect the revelation of her character’s reveal to spill into Peter’s motivation to continue the fight for his future in the upcoming Avengers movies.”

So, what does this mean? One fan has predicted that Sink will be a mix of Carlie Cooper and Harry Osborn, especially because she appears in the Brand New Day storyline in the comics and Peter has yet to meet Harry in the MCU (and it’s unclear if he ever will, especially after he tangled with the original Green Goblin in No Way Home).
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Sadie sink is 100% a mix of Harry osborn and Carlie cooper, She was sprayed with goblin formula at some point so could easily be twisted into making her the goblin as they can’t do the osbornes in this universe as peter knows. Her first appearance is also in “Brand new day”https://t.co/Yom9qlO4SRpic.twitter.com/4Vg24GjGzh
The Brand New Day storyline could be the inspiration for the film, considering part of its plot involves Spider-Man going on hiatus due to the implementation of the Superhuman Registration Act – which echoes the end of Daredevil: Born Again Season 1 and Kingpin outlawing vigilantism.
Carlie is a forensics expert (and a childhood friend of Gwen Stacy, who also hasn’t been introduced in the MCU) who finds a spider-tracer in a corpse’s mouth. This kicks off a large, shocking conspiracy that we won’t spoil, just in case it becomes part of the film’s plot, but here’s the important bit: in the comics, Carlie becomes a love interest for Peter.
To be clear, this should all be taken with a huge pinch of salt. Sink hasn’t given anything away regarding her role, tellingDeadlinein May: “I see a lot of rumors too. They’ve been really cool to read. I love the Marvel Universe. I mean they’re awesome rumors.”
Spider-Man: Brand New Day will be released on August 05, 2025. In the meantime, check out our rundown ofevery upcoming MCU movie,our ranking of the MCU movies, and find out what else is dropping this year with our2025 movie calendar.