Rumors are swirling that Oscar Isaac might reprise his role as Moon Knight in the highly anticipated Avengers: Doomsday. This speculation gained traction following a surprising announcement from Star Wars Celebration's official social media, which stated that Isaac would no longer be attending the event in Japan due to changes in his production schedule. Initially, fans were excited about Isaac's potential return as Poe Dameron, especially after Daisy Ridley's appearance at Star Wars Celebration 2023 to announce her role in a new Star Wars film.
While the specifics of Isaac's schedule changes remain undisclosed, the fact that Avengers: Doomsday is currently being filmed in London has fueled speculation that he might be involved. Social media buzzed with reactions like:
He’s gonna be filming doomsday?
— James Young (@YoungJames34) April 4, 2025
Doooomsday
— G the Gamer (@G_da_Gamer) April 4, 2025
Doomsday
— Taco John (@SWaddict_) April 4, 2025
Despite these fan theories, it's important to note that Isaac was not listed among the cast members announced for Avengers: Doomsday. However, Marvel Studios producer Kevin Feige hinted at more surprises during a video call at CinemaCon, stating, "We revealed many, not all," leaving room for speculation about unannounced cast members.
Isaac previously starred in the six-episode series Moon Knight in 2022, but Marvel has yet to confirm any follow-up projects for the character. Avengers: Doomsday is slated for release on May 1, 2026, and promises to feature a wide array of returning heroes and notable actors as showcased in their epic livestream.
Meanwhile, MCU fans have been intrigued by another development involving Robert Downey Jr. The Iron Man actor recently sent out a Doctor Doom-themed invitation for his 60th birthday party, adding another layer of excitement and mystery to the MCU's future.
Last month's Avengers: Doomsday cast reveal was dominated by veteran X-Men actors, including Kelsey Grammer, Patrick Stewart, Ian McKellen, Alan Cumming, Rebecca Romijn, and James Marsden. This lineup has led to speculation that the film might be setting up an epic showdown between the Avengers and the X-Men. Grammer, who played Beast in the Fox X-Men franchise, made his MCU debut in The Marvels' post-credits scene. Stewart, known for his role as Charles Xavier/Professor X, appeared in the MCU briefly in Doctor Strange in the Multiverse of Madness as part of the Illuminati. McKellen, Cumming, Romijn, and Marsden, who portrayed Magneto, Nightcrawler, Mystique, and Cyclops respectively, have yet to make their MCU debuts. This raises the intriguing question: could Avengers: Doomsday be setting the stage for an Avengers vs. X-Men storyline?
