Sadie Sink Joins Spider-Man 4, Role Sparks Fan Speculation

The Stranger Things star's casting in the MCU has led to theories about her playing Mary Jane, Gwen Stacy, or other characters in the upcoming film.

Sadie Sink has been officially cast in Spider-Man 4, set to release on July 31, 2026, but her role remains unconfirmed by Marvel Studios.
Fans speculate that Sink may portray Mary Jane Watson, Gwen Stacy, or even a lesser-known character like Firestar or Felicia Hardy/Black Cat.
Some fans are concerned about the possibility of Sink replacing Zendaya’s Michelle Jones Watson, expressing strong attachment to Zendaya's portrayal of MJ.
Theories suggest Spider-Man 4 could introduce Gwen Stacy’s Spider-Gwen, potentially bridging the MCU and animated Spider-Verse films.
The movie will take place after Avengers: Doomsday, with Destin Daniel Cretton directing and Tom Holland reprising his role as Peter Parker.