The official title of Spider-Man: Brand New Day could have revealed exactly who Sadie Sink is playing in the MCU, and it is a superhero I never expected. Where recent updates about Spider-Man 4 are concerned, the biggest undoubtedly came at CinemaCon 2025. There, director Destin Daniel Cretton confirmed the film"s release date of July 2026, all while providing the movie"s official title as Spider-Man: Brand New Day, thus providing insights into what the film"s story could entail.
Spider-Man: Brand New Day will seemingly based on the comic book run of the same name, with the upcoming Spider-Man movie stemming from the world forgetting Peter Parker exists. The comic book story of Brand New Day had similar elements, essentially resetting the character"s timeline after the controversial One More Day storyline. With the added knowledge this could add regarding the story of the upcoming Marvel movie, Sadie Sink"s casting could have a superhero answer that I admit did not cross my mind.
Sadie Sink's Spider-Man: Brand New Day Role Is Still Unknown Who The Stranger Things Actor Is Playing Remains Shrouded In Mystery Close Since Sadie Sink was added to the MCU"s Spider-Man 4, the theories about who she will play have been endless. The casting news did not come with any confirmation about her character, nor even any little hints, such as her being a classmate of Peter Parker"s. This ambiguity, combined with the fact that Sink has been fancast in a variety of Marvel roles over the years, caused the theories and speculation to run rampant as audiences tried to figure out which role would fit her best in the MCU.
Related 4 Marvel Characters Sadie Sink Could Be Playing In Spider-Man 4 Stranger Things star Sadie Sink has officially been cast in the MCU"s upcoming Spider-Man 4, and there are four perfect characters she could portray.
Posts 12 The most prominent theory is that Sadie Sink will portray a young Jean Grey. After all, Marvel"s X-Men movie is still in development, with early reports indicating the studio wants younger actors to portray the iconic mutants. Another mutant that audiences have suggested Sink could be playing is Firestar, a character who first appeared in the TV show Spider-Man and His Amazing Friends. Beyond the world of the X-Men, some other Spider-Man-centric characters have also been raised as possibilities for Sink.
With all of these theories in mind, one thing is clear: no one knows for sure who Sadie Sink is playing...
One such character is Mary Jane Watson, given that Zendaya"s variant of the character from the Homecoming trilogy was named Michelle-Jones Watson. Now that Zendaya"s MJ does not know who Peter is, Marvel Studios could introduce a more comic book-accurate version of the character via Sink. The final theory regarding Sink"s role is another prominent love interest of Peter Parker: Gwen Stacy. With all of these theories in mind, one thing is clear: no one knows for sure who Sadie Sink is playing in Spider-Man: Brand New Day.
Brand New Day's Comic Inspiration May Reveal Sadie Sink's Best Role Aside From The Four Main Character Theories With the reveal that Spider-Man 4 is subtitled Brand New Day, the potential roles for Sadie Sink have only increased, with one standing out. The character in question is the superhero known as Jackpot, who debuted around the same time as the Brand New Day comic book run essentially soft rebooted Marvel Comics" Spider-Man stories. Jackpot played a fairly big role in the Brand New Day comic books, with two characters named Alana Jobson and Sarah Ehret sharing the mantle.
Mary Jane Watson also had a link to Jackpot in the Brand New Day comic book, creating the potentiality of binding two theories together if Sink plays both characters in the story.
What ties this role to Sadie Sink is her physical appearance. Every iteration of Jackpot has been a younger woman around Spider-Man"s age, with bright red hair. Although Sink is younger than Tom Holland, the two are likely going to be playing similarly aged characters given Peter Parker"s status as a college student. Jackpot"s proximity to Spider-Man-centric stories in the comics - especially Brand New Day - also makes the role less of a stretch if Sink were to play the hero, with characters like Firestar and Jean Grey not meshing the most seamlessly with Peter Parker.
How Jackpot Could Fit Into The Spider-Man: Brand New Day Story The Ending Of No Way Home Makes Jackpot's Inclusion More Likely Close Concerning how Jackpot could fit with Spider-Man: Brand New Day, the ending of No Way Home allows for this. If the title is taking queues from the comic book of the same name, the movie will almost be like a soft reboot of the MCU"s Spider-Man franchise now that no one, including MJ, Ned, or any of the Avengers, remembers who Peter Parker is. This could allow Peter to have a whole new roster of allies and enemies, with Jackpot potentially being one of the former.
Spider-Man worked closely with both early iterations of Jackpot in the comic books, meaning it would make sense for him to seek out a new ally after Spider-Man: No Way Home"s ending. Moreover, the film has the potential to delve even deeper into the character of Mary Jane Watson. If, indeed, Sadie Sink is playing Mary Jane Watson in Spider-Man: Brand New Day, her incarnation of Jackpot could be used in the movie.
In the Better New Day comics, Peter suspects that MJ is Jackpot, potentially allowing Sink to play the lover of Peter and his superhero ally all in one. The ending of No Way Home likely means that Zendaya"s MJ will have less of a role now that she has forgotten Peter. If this were the case, a new MJ would make sense, as would her being Jackpot, in order to give the character more agency in Spider-Man"s superhero life than past iterations in Marvel movies have allowed for.
Why Jackpot Could Make More Sense For Sadie Sink's Role In Spider-Man: Brand New Day Jackpot Fits Better With The World Of Spider-Man Custom image by Nicolas Ayala As I have already alluded to, there are several reasons why Jackpot could make more sense for Sadie Sink in Spider-Man: Brand New Day. The aforementioned mutants like Jean Grey and Firestar are unlikely to be first teased in a Spider-Man movie, as this would not only rob Marvel"s X-Men movie of the chance to give them their debut but also detract from Spider-Man"s story given the hype of a mutant being introduced. Where the likes of Gwen Stacy (without Spider-Gwen) and Mary Jane (without Jackpot) are concerned, they would not best utilize Sink"s talents.
Having Sink be solely reduced to Peter Parker"s love interest would certainly not get the best out of her casting. Therefore, Sink playing Jackpot would give her a lot more agency in the story as a potential MCU superhero. This makes more sense knowing that Jackpot is a frequent collaborator of Spider-Man in the comics, who had one of her biggest roles in the Brand New Day storyline. All of this proves how logical it would be to have Sadie Sink play Jackpot in Spider-Man: Brand New Day, especially now the film"s title has been outright confirmed.
Like Follow Followed Spider-Man: Brand New Day Not Yet Rated Superhero Action Adventure Release Date July 31, 2026 Director Destin Daniel Cretton Writers Steve Ditko, Chris McKenna, Erik Sommers Prequel(s) Spider-Man: Homecoming, Spider-Man: Far From Home, Spider-Man: No Way Home Franchise(s) Marvel Cinematic Universe, Spider-Man Cast See All Tom Holland Spider-Man / Peter Parker Zendaya Michelle Jones Jacob Batalon Ned Leeds Sadie Sink
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