- Primary Subject: Sadie Sink in Spider-Man: Brand New Day
- Key Update: Sadie Sink teased a potential MCU return following praise for her mystery role in Spider-Man: Brand New Day.
- Status: Confirmed
- Last Verified: July 29, 2026
- Quick Answer: Sadie Sink teased "we'll have to see" regarding her MCU future following acclaim for her mystery role.
Sadie Sink has hinted at her future in the MCU following her critically acclaimed performance in Spider-Man: Brand New Day.
While her mysterious role has yet to be officially revealed after the film's Los Angeles premiere, though singer-songwriter Steve Lacy may have spoiled it, critics have been praising her performance. So, will fans get to see Sink return to the MCU?
SPOILER WARNING: This article could include major spoilers for Spider-Man: Brand New Day, so proceed with caution.
Sadie Sink Teases Return to the MCU
Sadie Sink made her MCU debut in Spider-Man: Brand New Day. While the film has yet to be officially released in theaters, she has already been earning praise from critics who attended its premiere.
With the overwhelmingly positive response and the possibility that she's playing a major character, could the Stranger Things breakout star return to the MCU?
"We'll have to see, I guess," she told ScreenRant. "I don't know."
While Sink's comment keeps the mystery surrounding her role intact, that could soon change if her character's true identity is finally revealed.
One popular theory is that she's playing the X-Men's Jean Grey, who singer-songwriter Steve Lacy claimed is part of Brand New Day and even described as the film's "villain."
To be fair, Lacy never explicitly said Sink was portraying Jean Grey. However, the long-running rumors surrounding her casting have given more weight to his comments.
If the speculation proves true, Sink's introduction as Jean Grey could mark the beginning of her superhero journey in the MCU.
What MCU Project Could Sadie Sink Return to Next?
If Sadie Sink is indeed playing Jean Grey in Spider-Man: Brand New Day, there are several upcoming MCU projects where she could return.
For starters, Marvel Studios is actively developing its X-Men reboot and appears to be assembling a new generation of mutants through its rumored casting. Reports have even claimed the reboot will focus on younger mutants, making Sink a natural fit for the role.
Beyond the X-Men reboot, she could also appear in Avengers: Doomsday. With the original Fox-era X-Men cast set to return, the film could serve as the perfect opportunity to introduce the MCU's next generation of mutants alongside the legacy team.
She could also play a role in Avengers: Secret Wars, which is expected to conclude the Multiverse Saga and potentially pave the way for the long-awaited Mutant Saga.
As an Omega-level mutant with immense telepathic and telekinetic abilities, Jean Grey is one of Marvel's most powerful characters.
If Sink is indeed portraying her, the character could become a pivotal figure in the future of the MCU.
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