In what may be one of the most exciting Marvel developments of 2025, ‘Stranger Things‘ star Sadie Sink is reportedly stepping into the Marvel Cinematic Universe as Mayday Parker, the daughter of Peter Parker and Mary Jane Watson, in ‘Spider-Man: Brand New Day’.
This was revealed by the scoop during an episode of The Hot Mic podcast, setting social media abuzz and igniting speculation about the future of Spider-Man’s multiverse storylines.
Sadie Sink’s Mayday Parker Links ‘Spider-Man: Brand New Day’ To Tobey Maguire’s Peter Parker
“My source heard that Sadie Sink is playing Mayday Parker. So, connecting to the Tobey universe. She’s his daughter,” Rocha stated, making a direct link to Tobey Maguire’s Spider-Man universe, not Tom Holland’s. Prior to this revelation, fan theories had already painted a broad spectrum of roles for Sadie. The speculation list included characters like Jean Grey to Firestar, Mary Jane Watson, and even the villainous Menace (Lily Hollister).
However, the announcement that she might be portraying Mayday Parker, aka Spider-Girl, presents a game-changing opportunity for Marvel to tap into long-established comic lore and fan-favorite arcs that have long awaited their live-action debut. First introduced in ‘What If…?’ #105 by Marvel Comics, Mayday Parker is a compelling character in her own right.
She inherits her father’s spider powers and evolves into a young superhero, operating under the aliases Spider-Girl or Spider-Woman. While she made a brief appearance in the animated ‘Spider-Man: Across the Spider-Verse’, this would mark her first live-action portrayal. This casting potentially ties directly to Tobey Maguire’s Spider-Man, implying a possible multiverse crossover. Additionally, ‘Spider-Man: No Way Home’ masterfully juggled three generations. ‘Spider-Men, Brand New Day’ could follow in its footsteps. If this theory holds, then Sadie Sink might be inheriting the web-slinging mantle for the next generation.
Everything To Know About ‘Spider-Man: Brand New Day’
While Sadie Sink’s casting continues to be a topic of discussion, ‘Brand New Day’ has also been making waves for other reasons. The film’s concept art and early promo material teased three major villains. Though their identities haven’t been officially confirmed, insiders who attended the event hinted that the adversaries Tom Holland’s Spider-Man will face are “nothing short of iconic.”
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In addition to the villain reveal, new promotional art may have offered fans a glimpse at Peter Parker’s next costume. Ever since ‘No Way Home’, where he crafted a comic-accurate suit paying homage to Tobey Maguire and Andrew Garfield’s iterations, there has been speculation about how the look might evolve. Some believe the new suit in the promo art is a step forward in that design.
However, others argue that art could simply be repurposed material from earlier projects. Disney, while not owning the Spider-Man film rights, does retain merchandising power, which is likely why every new film iteration features at least one revamped Spidey suit. Fans have come to expect this, and many are excited at the possibility of seeing a new version.
Adding to the hype, filmmaker Destin Daniel Cretton, known for helming ‘Shang-Chi and the Legend of the Ten Rings’, is set to direct. Tom Holland, Zendaya, Sadie Sink, and Liza Colón-Zayas round out the lead cast. With a release date locked in for July 31, 2026, ‘Spider-Man: Brand New Day’ is shaping up to be another monumental turning point in the MCU.
