Oscar Isaac Exits Star Wars Event, Sparks MCU Moon Knight Avengers Rumors

Hold onto your seats, Marvel fans, because whispers are swirling that Oscar Isaac might be reprising his role as Moon Knight in the upcoming blockbuster, Avengers: Doomsday. The buzz started after Star Wars Celebration announced that Isaac would no longer be attending their event in Japan due to changes in his production schedule. This unexpected shift has sparked speculation, especially since Avengers: Doomsday is currently filming in London.

Isaac's absence from Star Wars Celebration was a surprise, especially after the excitement around his potential return as Poe Dameron in the Star Wars universe. The news of Daisy Ridley's return at the 2023 Celebration had fans hopeful for more familiar faces, and Isaac's withdrawal has only fueled the fire of speculation.

While the details of Isaac's new commitments remain under wraps, the timing and location align suspiciously well with Avengers: Doomsday. Social media has been abuzz with fans connecting the dots:

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. Marvel is known for its surprises, and while Isaac wasn't part of the initial cast reveal for Doomsday, Marvel Studios producer Kevin Feige hinted that not all cast members were announced. "We revealed many, not all," Feige stated during a video call at CinemaCon, leaving room for speculation and hope.

Isaac previously starred in the six-episode series Moon Knight in 2022, but no follow-up has been announced yet. Avengers: Doomsday is slated to premiere on May 1, 2026, promising a grand ensemble of returning heroes and new faces as showcased in the epic livestream.

In other MCU news, fans are also buzzing about Robert Downey Jr.'s recent Doctor Doom-themed birthday invitation, adding another layer of intrigue to the Marvel universe.

Last month's cast reveal for Avengers: Doomsday was packed with veteran X-Men actors, including Kelsey Grammer, Patrick Stewart, Ian McKellen, Alan Cumming, Rebecca Romijn, and James Marsden. This confirms a significant presence of the X-Men in the film. 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 briefly in the MCU in Doctor Strange in the Multiverse of Madness as part of the Illuminati. Meanwhile, McKellen, Cumming, Romijn, and Marsden are yet to make their MCU debuts. This raises an intriguing question: is Avengers: Doomsday secretly an Avengers vs. X-Men movie?