Hold onto your seats, Marvel fans, because whispers of Oscar Isaac reprising his role as Moon Knight in the much-anticipated Avengers: Doomsday are sending shockwaves through the fandom. This speculation gained traction after a surprising announcement from Star Wars Celebration's official social media, which revealed that Isaac would no longer be attending the event in Japan this year due to changes in his production schedule.
The news of Isaac's withdrawal from Star Wars Celebration was a significant shift from the excitement that followed the initial announcement in February. Fans were eagerly anticipating another possible announcement of Poe Dameron's return, especially after Daisy Ridley confirmed her involvement in a new Star Wars film at the 2023 Celebration.
The absence of specific details about Isaac's revised production commitments sparked immediate speculation. Given that Avengers: Doomsday is currently being filmed in London, many fans quickly connected the dots, suggesting that Isaac could be gearing up to don the Moon Knight costume once again.
Social media erupted 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 buzz, it's crucial to note that this remains a theory. Oscar Isaac was not listed among the confirmed cast members in the initial Avengers: Doomsday reveal. However, Marvel Studios producer Kevin Feige added fuel to the speculation fire by hinting that the cast list shown during the livestream was not exhaustive. "We revealed many, not all," Feige stated during a video call at CinemaCon, leaving room for surprise appearances.
Isaac previously starred as Moon Knight in a six-episode series released in 2022, but no sequel has been officially announced yet. Avengers: Doomsday is slated for a theatrical release on May 1, 2026, promising a lineup 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 unfolding Marvel saga.
The cast reveal for Avengers: Doomsday last month was a significant event, particularly for fans of the X-Men franchise. Notable actors such as Kelsey Grammer (Beast), Patrick Stewart (Charles Xavier/Professor X), Ian McKellen (Magneto), Alan Cumming (Nightcrawler), Rebecca Romijn (Mystique), and James Marsden (Cyclops) are all set to join the film, signaling a major crossover. Grammer and Stewart have already made their MCU debuts, but the others are new to the Marvel Cinematic Universe. This has led to speculation about whether Avengers: Doomsday might secretly be an Avengers vs. X-Men movie.
As the excitement builds, fans are left to wonder and dream about what surprises Marvel has in store, including the potential return of Oscar Isaac as Moon Knight.
