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While Sadie Sink’s character’s identity is a secret, the bigger rumor is that Sink is playing Jean Grey, bringing in the first major X-Men member into the Marvel Universe. Not only that, but Wonder Man might have shown what she might be doing in her MCU debut.
Sadie Sink Could Be Jean Grey Running From DODC

Sadie Sink made her name on Stranger Things, and joining the MCU is the next step in her career. However, fans have been debating who Sadie Sink is playing since her casting announcement. Everyone from Black Cat and Mary Jane Watson to Moonstone and Madelyne Pryor has been name-dropped. However, it is that last name that has led to the biggest predictions for Sink. That is because Sink is likely not playing Madelyne Pryor, but playing the woman she was based on, Jean Grey.
So far, there have been two characters introduced in the MCU who might be mutants. The first was Kamala Khan, as she learned about her “mutation” in her solo series Ms. Marvel. The second character is Wonder Man, who explained how he got his powers, and it seems that he might be a mutant based on his description. While he wasn’t revealed to be a mutant in Wonder Man, it was clearly hinted at. Also, both of those Disney+ shows had one thing in common. The Department of Damage Control (DODC) was hunting down Kamala Khan and Wonder Man.
In Ms. Marvel, they wanted to capture Kamala because they realized someone there had powers. They made the mistake of attacking high school students, which turned the general public against them. In Wonder Man, the DODC was coming after Simon Williams, and there was something they said in the new Disney+ series. DODC said they saw Simon as a massive threat, and then they also said they see him as a possible asset. That is the key here.
When Sadie Sink shows up in Spider-Man: Brand New Day, she seems to be on the run from something or someone. If she is Jean Grey, and she is a mutant, DODC could be hunting her down like they were Wonder Man and Kamala Khan. DODC made their MCU debut in Spider-Man: Homecoming, and it seems that they might also want to bring in Spider-Man as an asset. If they want Spider-Man and Jean Grey, this could lead the two to work together for survival purposes. This could explain Sadie Sink’s debut perfectly.









