Sadie Sink has confirmed precisely one detail about Spider-Man: Brand New Day: she is in Spider-Man: Brand New Day. Marvel has revealed nothing else, apparently deciding that one actress and one film title constitute an entire information buffet. Yet the secrecy has worked beautifully because fans are more interested than ever in seeing familiar characters return and discovering which Marvel surprise is hiding behind the mask.

The leading theory is Jean Grey, and fans are treating every scrap of evidence like Peter Parker tracking a villain through New York, assembling clues that even Tom Holland’s denial has failed to destroy, including Sink’s height and its comic book comparison.

Yes, Sadie Sink is close enough to comic book Jean Grey to make the height comparison surprisingly convincing, standing at approximately 5 feet 3 inches against Jean Grey’s listed 5 feet 6 inches. The three-inch difference is hardly a deal-breaker, especially by Marvel standards, where a good costume can apparently solve almost anything.

The physical similarities only make the fan theory more entertaining. Jean Grey is famous for her vivid auburn hair, while Sink arrives with the exact natural red hair that makes comic book comparisons practically write themselves. Fans have also noticed Sink wearing green and gold, the colours famously associated with Jean Grey’s Marvel Girl and Phoenix identities, because apparently the clues are assembling themselves like the Avengers.

Sink also has the most suspiciously relevant dramatic résumé imaginable. Max Mayfield endured psychological torment, supernatural possession, levitation, isolation, and a terrifying battle against an overwhelming entity, while Jean Grey is famously associated with psychic power, emotional trauma, and the Phoenix. If Marvel is introducing a younger Jean Grey, Sink has already spent years rehearsing for the role without apparently being told. Marvel's favoritism towards Sink also speaks a lot; Tom Holland would agree.

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But a Jean Grey height check is incomplete without examining how Sadie Sink measures up against the actresses who came before her.

If Sadie Sink does become Jean Grey, she would technically be the shortest actress to play the iconic mutant in live-action. Famke Janssen towered at 6 feet, while Sophie Turner stood at 5 feet 9 inches, putting both actresses comfortably above the comic book character’s 5 feet 6 inches. Sink would therefore bring a very different physical interpretation to the role.

That would make the comparison less about matching a previous actress and more about finally landing closest to the source material. The potential Phoenix would be three inches shorter than the comic book Jean Grey, while her predecessors were six inches and three inches taller, respectively. So, in the most literal sense, Sadie Sink could become the shortest live-action Jean Grey and the closest match to the comics.

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Do you think Sadie Sink's height advantage adds to the chances of her playing Jean Grey? Let us know in the comments!