Rumors are swirling that Oscar Isaac may reprise his role as Moon Knight in the upcoming Avengers: Doomsday. This speculation gained traction after it was announced that Isaac would no longer attend Star Wars Celebration in Japan due to changes in his production schedule. Isaac's expected appearance at the event had previously sparked excitement about potential new projects involving his character Poe Dameron from the Star Wars franchise. However, with the news of his schedule shift and the fact that Avengers: Doomsday is currently in production in London, fans are piecing together the possibility of seeing Moon Knight join the Avengers.
Social media erupted with speculation following the announcement:
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
While the theory of Isaac joining Avengers: Doomsday is exciting, it's important to note that it remains just a theory. Marvel has a history of keeping surprises under wraps, and although Isaac wasn't included in the initial cast reveal for Doomsday, Marvel Studios producer Kevin Feige hinted that not all cast members were disclosed during the livestream at CinemaCon. This leaves room for speculation and hope among fans.
Isaac previously starred in the six-episode series Moon Knight released in 2022, but Marvel has yet to confirm any follow-up projects. Avengers: Doomsday is slated for release on May 1, 2026, promising a grand assembly of returning heroes and new faces as showcased during the epic livestream.
In other MCU news, fans have been buzzing about Robert Downey Jr.'s recent Doctor Doom-themed invitation to his 60th birthday party, further fueling speculation about upcoming projects and character crossovers.
Last month's cast reveal for Avengers: Doomsday was dominated by veteran X-Men actors, including Kelsey Grammer, Patrick Stewart, Ian McKellen, Alan Cumming, Rebecca Romijn, and James Marsden. This significant inclusion of X-Men characters hints at a potential Avengers vs. X-Men storyline. Grammer, who played Beast, made his MCU debut in The Marvels' post-credits scene, while Stewart briefly appeared as Professor X in Doctor Strange in the Multiverse of Madness. McKellen, Cumming, Romijn, and Marsden, known for their roles as Magneto, Nightcrawler, Mystique, and Cyclops respectively, have yet to make their MCU debut, adding to the intrigue surrounding Avengers: Doomsday.
