Hype around Spider-Man: Brand New Day is already swinging through the roof, and Marvel is keeping its cards very close to the chest. From cryptic set leaks to carefully worded cast reveals, almost everything about the story remains tightly under wraps. Naturally, that mystery has only fueled fan theories, especially when it comes to Sadie Sink’s surprise addition to the lineup.

The internet has been in full detective mode, dissecting every clue about who she might be playing in Peter Parker’s next chapter. And now, after weeks of speculation, it looks like the code is finally cracked.

While nothing is set in stone from official channels, plenty of reports by major outlets point strongly to Sadie Sink stepping into the shoes of Jean Grey. Jean Grey ranks among the mightiest mutants in the X-Men world, armed with incredible mind-reading and object-moving powers. Her arc hits legendary status when she evolves into the all-powerful Phoenix, turning her into one of Marvel's strongest characters.

Rumours also hint that the Department of Damage Control will chase her relentlessly. She is set to team up on screen with Spider-Man and will uncover his hidden identity. Plus, she is locked in for a spot in the sans Eternals, Avengers: Secret Wars. The clearest clue that Sink embodies Jean Grey lies in her confirmed return for that massive crossover. 

On the subject of Brand New Day, it feels highly unlikely that a minor part like Peter's schoolmate, local neighbor, or fleeting romance would snag a role in Secret Wars. Among all the buzzed-about possibilities for Sink, from niche bad guys to alternate-reality twists, Jean stands out as the sole pick that fits seamlessly into that grand finale.

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With Jean Grey potentially shaking up Peter's world, who are the other friends and foes suiting up alongside him?

Jon Bernthal reprises his gritty take on The Punisher. The hulking emerald force, Mark Ruffalo, joins as well, with Zendaya back as MJ. Michael Mando suits up as The Scorpion, Marvin Jones III steps in as Tombstone, and Jacob Batalon returns as the loyal Ned Leeds. Florence Pugh is speculated to appear as Yelena Belova as well, with no official confirmation as of yet. 

The story picks up four years post Spider-Man: No Way Home, with the wall-crawler tangled in a bizarre crime spree four years after being wiped off the world's track records. To conquer fresh threats and safeguard his circle, Peter Parker dons the suit once more and links arms with a surprising partner.

Sadie Sink's teased turn as Jean Grey amps up the excitement for Spider-Man: Brand New Day, blending mutant might with web-slinging chaos in a way that nods to fans' hopes while charting bold new paths. 

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What do you think about Sadie Sink as Jean Grey? Let us know in the comments!