Hold onto your seats, Marvel fans, because whispers are swirling that Oscar Isaac might be reprising his role as Moon Knight, and not just anywhere, but in the highly anticipated Avengers: Doomsday. Surprised? You're not alone, but recent events have started to fuel this intriguing theory.
Over the weekend, the official social media for Star Wars Celebration announced that Isaac would no longer be attending the fan-favorite convention in Japan this year due to changes in his production schedule. Back in February, Isaac's scheduled appearance at Star Wars Celebration had sparked speculation about a potential return as Poe Dameron in the Star Wars universe, especially after Daisy Ridley announced her involvement in a new Star Wars film during Star Wars Celebration 2023.
While the details of Isaac's altered production schedule remain under wraps, the fact that Avengers: Doomsday is currently in production in London has led fans to connect the dots and speculate about Moon Knight joining the Avengers lineup.
Social media has been buzzing with reactions:
He’s gonna be filming doomsday?
— James Young (@YoungJames34) April 4, 2025
Dooooomsday
— G the Gamer (@G_da_Gamer) April 4, 2025
Doomsday
— Taco John (@SWaddict_) April 4, 2025
Despite the excitement, it's important to remember that this is still just a theory. While Oscar Isaac wasn't part of the initial Avengers: Doomsday cast reveal, Marvel Studios producer Kevin Feige hinted at surprises during a video call at CinemaCon, stating, "We revealed many, not all." So, the possibility remains open, and fans are allowed to dream.
Isaac's portrayal of Moon Knight in the six-episode series released in 2022 was well-received, but Marvel has yet to announce a second season. Meanwhile, Avengers: Doomsday is slated for a theatrical release on May 1, 2026, promising a star-studded cast and an epic storyline as showcased in the recent livestream.
In other Marvel news, the curious case of Robert Downey Jr.'s hair has caught the attention of MCU fans after the Iron Man actor sent out a Doctor Doom-themed invitation for his 60th birthday party.
Last month's Avengers: Doomsday cast reveal was a significant moment, particularly for fans of the X-Men. Veteran actors from the franchise, including Kelsey Grammer (Beast), Patrick Stewart (Professor X), Ian McKellen (Magneto), Alan Cumming (Nightcrawler), Rebecca Romijn (Mystique), and James Marsden (Cyclops), are confirmed to appear, suggesting a major role for the X-Men in the film. This has led to speculation about whether Avengers: Doomsday might secretly be an Avengers vs. X-Men movie.
So, who was the biggest surprise cast member revealed for Avengers: Doomsday? The options include Tenoch Huerta Mejía as Namor, Kelsey Grammer as Beast, David Harbour as Red Guardian, Ian McKellen as Magneto, Lewis Pullman as Sentry, Alan Cumming as Nightcrawler, Rebecca Romijn as Mystique, Channing Tatum as Gambit, or another unannounced character.
