SPIDER-MAN: BRAND NEW DAY Rumor Once Again Makes A Case For Sadie Sink Playing The MCU's Jean Grey

SPIDER-MAN: BRAND NEW DAY Rumor Once Again Makes A Case For Sadie Sink Playing The MCU's Jean Grey

The latest Spider-Man: Brand New Day rumour once again points to Stranger Things star Sadie Sink making her MCU debut as the all-new, all-different Jean Grey.

By JoshWilding - Jan 09, 2026 07:01 AM EST

As speculation continues to swirl about Sadie Sink's Spider-Man: Brand New Day role, it's clear that Marvel Studios and Sony Pictures are using the mystery to increase interest in the movie. 

It certainly seems to be working, and we wouldn't bank on the first trailer pulling back the curtain on Sink's character. Who she's playing will probably be revealed at some point before the movie swings into theaters this July, but right now, we only have rumours to go on.

The latest comes from @MyTimeToShineH, who reveals that Sink wears green and yellow in Spider-Man: Brand New Day and has similar powers to Jean Grey.

Noting that she's being "chased" by the Department of Damage Control, the insider theorises that Sink is likely playing the powerful mutant. This obviously raises some big questions, including what Jean is doing on Earth-616 and why she's debuting in a Spider-Man movie.

It could be that Jean is stranded in the MCU after her reality is destroyed, but we'd say a far more likely possibility if her being another of Earth-616's mutants (joining the likes of Namor and Ms. Marvel). After the MCU is rebooted in Avengers: Secret Wars, we'd imagine Sink sticking around as Jean alongside the rest of Marvel Studios' new X-Men is the current plan.

It's a unique move by Kevin Feige if that is indeed the plan, but introducing one of the future X-Men in what will likely be a contender for 2026's biggest superhero movie seems pretty smart.

"It's torture. There's so much speculation," Sink said in a recent interview. "I feel like there's a new character every week. I tell people. The people I know. I found out through online theories. Before I got cast, there was speculation online that said, 'Sadie Sink is gonna be in the new Spider-Man.'"

"I was like, ‘I am?’ Sure enough, two days later, they asked me to do it," the Stranger Things star continued. "Those theories, there's sometimes some truth to [them]."

Shang-Chi and the Legend of the Ten Rings helmer Destin Daniel Cretton directs Spider-Man: Brand New Day from a script by returning Spider-Man franchise writers Chris McKenna and Erik Sommers.

Tom Holland plays Spider-Man in a cast that also includes Jon Bernthal (The Punisher), Mark Ruffalo (The Hulk), Zendaya (MJ), Sadie Sink, Michael Mando (The Scorpion), Tramell Tillman, Marvin Jones III (Tombstone), Jacob Batalon (Ned Leeds), and Liza Colón-Zayas. Avengers: Doomsday star Florence Pugh is expected to reprise her Thunderbolts* role as Yelena Belova.

Spider-Man: Brand New Day will be released in theaters on July 31, 2026. 

About The Author:
JoshWilding
Member Since 3/13/2009
Comic Book Reader. Film Lover. WWE and F1 Fan. Rotten Tomatoes-approved critic and ComicBookMovie.com's #1 contributor.
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Feralwookiee
Feralwookiee - 1/9/2026, 7:51 AM
Josh posting his 3,729th article on this chick maybe or maybe not being cast as Jean Grey.

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ogrodafloresta
ogrodafloresta - 1/9/2026, 4:08 PM
@Feralwookiee - Another 202 days of this...
Feralwookiee
Feralwookiee - 1/9/2026, 7:58 PM
@ogrodafloresta - Luckily, 2026 isn't a leap year.
BrainySleep
BrainySleep - 1/9/2026, 8:01 AM
Getting a massive sense of Déjà vu with these articles
Spike101
Spike101 - 1/9/2026, 8:21 AM
@JoshWilding - I think we need a vote on who we think she is playing, could you arrange something like that? At least it would pass the time between now and a proper trailer.
JustAWaffle
JustAWaffle - 1/9/2026, 8:30 AM
I don’t know who Sadie is, nor what she’s sinking about. And at this point I’m too afraid to ask. User Comment Image
ProfessorWhy
ProfessorWhy - 1/9/2026, 8:47 AM
@JustAWaffle - she's playing everything but the Sadie Sink
Feralwookiee
Feralwookiee - 1/9/2026, 8:58 AM
@ProfessorWhy - User Comment Image
ProfessorWhy
ProfessorWhy - 1/9/2026, 10:49 AM
@Feralwookiee - gotta be gentle with these puns, no need to faucet
Feralwookiee
Feralwookiee - 1/9/2026, 12:29 PM
@ProfessorWhy -

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It almost works if you say it with a Boston accent: fArce it. 😝
TheVisionary25
TheVisionary25 - 1/9/2026, 8:52 AM
Ahhh , I see that the Smallville route is still alive & well haha….

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Kidding aside, if Sadie is Jean then I’m cool with it since she’s a great actress that can play the complexity of the character well!!.
DocSpock
DocSpock - 1/9/2026, 9:19 AM

I have been saying she's jean Grey since day one she was signed. So what; I don't know anything. I'm just an idiot.

Recently a goober dropped a rumor on another site quoting me exactly. Through another bump, here we go on this site over the last week or so.

I once before just made up a credible sounding rumor about the X-Men and dropped it on a couple of other sites. You guessed it. In less than a week, someone cited it here.

In the future, when I'm not drunk, I'm going to do this some more just because it's fun and I'm an ass.

SummersEssex
SummersEssex - 1/9/2026, 9:48 AM
Nah. But I’d hear a case for Rachel or Hope Summers.
Joker666
Joker666 - 1/9/2026, 11:29 AM
@SummersEssex - My money would be on Rachel!
gambgel
gambgel - 1/9/2026, 10:17 AM
really really hope this whole Jean grey thing ends being NOT true.

MyCoolYoung
MyCoolYoung - 1/9/2026, 10:42 AM
I think Destin can cook but man if she’s Jean it just seem like there’s a whole lot of threads pulling in this movie. Nobody even talks about Florence Pugh is reportedly in the movie too
TheVisionary25
TheVisionary25 - 1/9/2026, 10:48 AM
@MyCoolYoung - she may or may not be in it…

It’s useless to speculate about it until we get confirmation either way

Anyway , we’ll see but I have faith in Destin!!.
MyCoolYoung
MyCoolYoung - 1/9/2026, 11:08 AM
@TheVisionary25 - definitely all the faith in Destin. The set “leaks” we seen last year Spider-Man had more aura than he has ever had in any movie
hue66
hue66 - 1/9/2026, 11:48 AM
Didn't some other characters who knew Parkers identity pass through to the 616 during No way home? Stange did close the barrier but could others have passed through prior to this and got stuck? That she is in BND could be because she's from another universe because of the events of NWH. And is Jean from another universe. And knew his identity in her universe
TK420
TK420 - 1/9/2026, 12:57 PM
Why does all of Marvel's current art look gay?
Feralwookiee
Feralwookiee - 1/9/2026, 8:03 PM
@TK420 - Because, they are gae.

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JabbaTheSus
JabbaTheSus - 1/9/2026, 1:00 PM
At this point it just has to be a bigger character. I think we can for sure, forget about the theories of lame ones like Santhra, etc. Wouldn't be this secretive about it, if it wasn't Jean, May Day or a Summers
Timerider
Timerider - 1/9/2026, 2:13 PM
@JabbaTheSus - you’re on to something, it is someone bigger. She’s Jean Grey
String
String - 1/9/2026, 4:21 PM
Up to this point, I was figuring Kevin Feige was doing something different. He always does. My belief was Sadie Sink was playing Madelyne Pryor, a villain character, making fans assume she is Jean Grey in Brand New Day but will later actually be playing Jean Grey in Secret Wars when the MCU X-Men team stands up. That would be the twist that would surprise everyone and would be something different I think Kevin Feige would approve.

Keep in mind, the actress playing Jean Grey will also be playing Madelyne Pryor, who is a villain character, at some point. If Mister Sinister is an early MCU X-Men villain, Madelyne Pryor is part of that story.
joevseveryone
joevseveryone - 1/9/2026, 4:50 PM
@String - Came here to say this. Thank you.

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