Who is Sadie Sink playing in Spider-Man: Brand New Day? Clip fuels Jean Grey buzz
An alleged five-second clip of Sadie Sink has reignited speculation over her mystery role in Spider-Man: Brand New Day. While Marvel has remained tight-lipped, fans are convinced they've spotted clues pointing to Jean Grey, with several other theories also doing the rounds online.

As excitement builds around Spider-Man: Brand New Day, an alleged first look at Sadie Sink's undisclosed character has sparked fresh speculation online. While Marvel Comics readers have their own theories, the viral clip has fuelled debate over who the Stranger Things actor could be playing.
A five-second clip featuring Sink has been circulating on social media, although its original source remains unknown. Amid the buzz surrounding the Tom Holland and Zendaya-starrer, it is unclear whether the footage is an actual leak from the film, AI-generated, or taken from an entirely different project.
The clip shows Sink wearing green contact lenses, dressed in green attire, with fuller eyebrows and darker red hair than usual. She is heard saying, "What would you do if...?" - the rest of the sentence has been redacted.
The clip has reignited rumours that Sink could be playing Jean Grey, the red-haired X-Men mutant known for her telepathic abilities. Some fans pointed out that Sink's jaw barely moves during the redacted portion of the dialogue, leading them to speculate that the scene could hint at Jean Grey communicating telepathically.
One X user wrote, "Marvel having Sadie Sink do an entire press tour pretending to play 'a secret mystery role' in a Spider-Man film when she looks like exact comic book art of Jean Grey."
Others have speculated that the incomplete line could be connected to restoring Ned and MJ's memories.
"I got it!!! She said, 'What would you do if you had the chance to save your friends and billions of people,' while looking at MJ and Ned, so I'm assuming she's doing something to save her X-Men and universe!!" another fan claimed.
The viral clip has also been linked to an earlier leaked set video showing a woman in a yellow jacket being arrested. Some fans believe the scene mirrors one from the comics.
According to one theory circulating on X, Sink could indeed be playing Jean Grey, while the woman in the yellow jacket is her sister, Sarah Grey.
"The new clip of Sadie Sink as Jean Grey in Brand New Day literally tells us everything. The leaked set video shows a girl being arrested wearing a yellow jacket. We were wrong — that wasn't Jean. This is her sister Sarah Grey getting arrested, not Jean Grey," the user wrote.
While Jean Grey remains the most popular theory among fans, others believe Sink could instead be portraying Mary Jane, Gwen Stacy, or an entirely new character created for the film.
Sink, however, has remained tight-lipped about her role.
During an interview with The Backstage Experience, host Dave Morales playfully asked her about buying "jeans, grey for instance" — a clear nod to the Jean Grey rumours. Sink did not react to the wordplay and avoided revealing any details about her character.
Although Marvel has not officially confirmed her role, Sink recently acknowledged her appearance in the film in a light-hearted Instagram video.
"Since the trailer dropped, I've seen so many theories about who I'm playing," she said. "I am not Spider-Man. I am not Aunt May. And I can definitely confirm that I am in this movie."
Spider-Man: Brand New Day releases in India on July 30 and worldwide on July 31. The film stars Tom Holland, Zendaya, Sadie Sink, Mark Ruffalo, Jacob Batalon and Michael Mando, among others. Holland and Zendaya most recently appeared together in Christopher Nolan's The Odyssey.
As excitement builds around Spider-Man: Brand New Day, an alleged first look at Sadie Sink's undisclosed character has sparked fresh speculation online. While Marvel Comics readers have their own theories, the viral clip has fuelled debate over who the Stranger Things actor could be playing.
A five-second clip featuring Sink has been circulating on social media, although its original source remains unknown. Amid the buzz surrounding the Tom Holland and Zendaya-starrer, it is unclear whether the footage is an actual leak from the film, AI-generated, or taken from an entirely different project.
The clip shows Sink wearing green contact lenses, dressed in green attire, with fuller eyebrows and darker red hair than usual. She is heard saying, "What would you do if...?" - the rest of the sentence has been redacted.
The clip has reignited rumours that Sink could be playing Jean Grey, the red-haired X-Men mutant known for her telepathic abilities. Some fans pointed out that Sink's jaw barely moves during the redacted portion of the dialogue, leading them to speculate that the scene could hint at Jean Grey communicating telepathically.
One X user wrote, "Marvel having Sadie Sink do an entire press tour pretending to play 'a secret mystery role' in a Spider-Man film when she looks like exact comic book art of Jean Grey."
Others have speculated that the incomplete line could be connected to restoring Ned and MJ's memories.
"I got it!!! She said, 'What would you do if you had the chance to save your friends and billions of people,' while looking at MJ and Ned, so I'm assuming she's doing something to save her X-Men and universe!!" another fan claimed.
The viral clip has also been linked to an earlier leaked set video showing a woman in a yellow jacket being arrested. Some fans believe the scene mirrors one from the comics.
According to one theory circulating on X, Sink could indeed be playing Jean Grey, while the woman in the yellow jacket is her sister, Sarah Grey.
"The new clip of Sadie Sink as Jean Grey in Brand New Day literally tells us everything. The leaked set video shows a girl being arrested wearing a yellow jacket. We were wrong — that wasn't Jean. This is her sister Sarah Grey getting arrested, not Jean Grey," the user wrote.
While Jean Grey remains the most popular theory among fans, others believe Sink could instead be portraying Mary Jane, Gwen Stacy, or an entirely new character created for the film.
Sink, however, has remained tight-lipped about her role.
During an interview with The Backstage Experience, host Dave Morales playfully asked her about buying "jeans, grey for instance" — a clear nod to the Jean Grey rumours. Sink did not react to the wordplay and avoided revealing any details about her character.
Although Marvel has not officially confirmed her role, Sink recently acknowledged her appearance in the film in a light-hearted Instagram video.
"Since the trailer dropped, I've seen so many theories about who I'm playing," she said. "I am not Spider-Man. I am not Aunt May. And I can definitely confirm that I am in this movie."
Spider-Man: Brand New Day releases in India on July 30 and worldwide on July 31. The film stars Tom Holland, Zendaya, Sadie Sink, Mark Ruffalo, Jacob Batalon and Michael Mando, among others. Holland and Zendaya most recently appeared together in Christopher Nolan's The Odyssey.
As excitement builds around Spider-Man: Brand New Day, an alleged first look at Sadie Sink's undisclosed character has sparked fresh speculation online. While Marvel Comics readers have their own theories, the viral clip has fuelled debate over who the Stranger Things actor could be playing.
A five-second clip featuring Sink has been circulating on social media, although its original source remains unknown. Amid the buzz surrounding the Tom Holland and Zendaya-starrer, it is unclear whether the footage is an actual leak from the film, AI-generated, or taken from an entirely different project.
The clip shows Sink wearing green contact lenses, dressed in green attire, with fuller eyebrows and darker red hair than usual. She is heard saying, "What would you do if...?" - the rest of the sentence has been redacted.
The clip has reignited rumours that Sink could be playing Jean Grey, the red-haired X-Men mutant known for her telepathic abilities. Some fans pointed out that Sink's jaw barely moves during the redacted portion of the dialogue, leading them to speculate that the scene could hint at Jean Grey communicating telepathically.
One X user wrote, "Marvel having Sadie Sink do an entire press tour pretending to play 'a secret mystery role' in a Spider-Man film when she looks like exact comic book art of Jean Grey."
Others have speculated that the incomplete line could be connected to restoring Ned and MJ's memories.
"I got it!!! She said, 'What would you do if you had the chance to save your friends and billions of people,' while looking at MJ and Ned, so I'm assuming she's doing something to save her X-Men and universe!!" another fan claimed.
The viral clip has also been linked to an earlier leaked set video showing a woman in a yellow jacket being arrested. Some fans believe the scene mirrors one from the comics.
According to one theory circulating on X, Sink could indeed be playing Jean Grey, while the woman in the yellow jacket is her sister, Sarah Grey.
"The new clip of Sadie Sink as Jean Grey in Brand New Day literally tells us everything. The leaked set video shows a girl being arrested wearing a yellow jacket. We were wrong — that wasn't Jean. This is her sister Sarah Grey getting arrested, not Jean Grey," the user wrote.
While Jean Grey remains the most popular theory among fans, others believe Sink could instead be portraying Mary Jane, Gwen Stacy, or an entirely new character created for the film.
Sink, however, has remained tight-lipped about her role.
During an interview with The Backstage Experience, host Dave Morales playfully asked her about buying "jeans, grey for instance" — a clear nod to the Jean Grey rumours. Sink did not react to the wordplay and avoided revealing any details about her character.
Although Marvel has not officially confirmed her role, Sink recently acknowledged her appearance in the film in a light-hearted Instagram video.
"Since the trailer dropped, I've seen so many theories about who I'm playing," she said. "I am not Spider-Man. I am not Aunt May. And I can definitely confirm that I am in this movie."
Spider-Man: Brand New Day releases in India on July 30 and worldwide on July 31. The film stars Tom Holland, Zendaya, Sadie Sink, Mark Ruffalo, Jacob Batalon and Michael Mando, among others. Holland and Zendaya most recently appeared together in Christopher Nolan's The Odyssey.