- Primary Subject: Spider-Man: Brand New Day
- Key Update: Sony Pictures released a new trailer showcasing Sadie Sink as a mysterious, mind-controlling villain, sparking intense speculation that she is playing Jean Grey.
- Status: Confirmed
- Last Verified: June 18, 2026
- Quick Answer: Sadie Sink is confirmed for Spider-Man: Brand New Day, playing a mysterious, telepathic villain rumored by fans to be the MCU incarnation of Jean Grey.
Sony Pictures has dropped a new trailer for the highly anticipated Spider-Man: Brand New Day, finally giving a glimpse of Sadie Sink’s mysterious character.
While major details about the Stranger Things breakout star’s role remain under wraps, the trailer hints she’s a threat lurking in the shadows.
With her introduction in the Brand New Day trailer, how does this fuel ongoing theories that she could be a new-generation Jean Grey?
Who Will Sadie Sink Play in Spider-Man: Brand New Day?
While the name of Sadie Sink’s character has not yet been revealed, a figure wearing a jacket and tan hoodie closely resembles a leaked set photo of her, fueling speculation that this may be the role she will play.
This character appears twice in the Spider-Man: Brand New Day trailer, and in both scenes, she is shown only in shadow, fitting the movie’s description of a “powerful villain no one can even see.”
Sink herself also mentioned in a previous interview that she would be playing a woman of many faces.
Adding more fuel to the speculation, a man in a suit–identified in the trailer subtitles as X-Men villain Bill Metzger, a prominent anti-mutant activist–tells Spider-Man that they are facing “a threat we can’t control; one we can’t even see,” seemingly aligning with the mysterious character.
The trailer later shows someone speaking to Peter Parker via telepathy and appearing to shapeshift.
Taken together, these clues suggest that Sink may indeed be playing a hidden threat in the shadows, seemingly an enemy to Spider-Man. However, it remains to be seen whether she will be Brand New Day’s main villain or simply one of the threats he must face.
How Will Sadie Sink’s Mysterious Character Fit the Jean Grey Theory?
While it has not been confirmed whether the mysterious character in the Spider-Man: Brand New Day trailer is Jean Grey, the clues have led to speculation that the theory could be true.
The two trailers for the fourth Spider-Man film show Peter Parker undergoing genetic mutations, which could be Marvel’s way of introducing mutants into the MCU.
The description “a threat we can’t control” also fits Jean Grey, as seen in Professor Charles Xavier’s struggle to contain her when she is at her most powerful.
The individual speaking to Peter via telepathy could also be the mysterious character, a power that Jean Grey possesses.
However, since the character is also seen shapeshifting, it may be Marvel’s way of misleading viewers and creating doubt about whether it is the powerful mutant.
It is also possible that she uses telepathic camouflage and molecular manipulation to appear as someone else, which could explain the shapeshifting ability.
Considering that Bruce Banner joins the film as a professor studying and suppressing mutant DNA, Jean Grey could appear as one of his students rebelling, especially as Hulk’s alter ego has been searching for ways to suppress mutant DNA.
As the answers to these questions remain a mystery, they will only be revealed when Spider-Man: Brand New Day hits theaters on July 31, 2026.
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