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

Hold onto your seats, Marvel fans—rumors are swirling that Oscar Isaac might be reprising his role as Moon Knight in the upcoming blockbuster, Avengers: Doomsday. The speculation kicked off after Isaac unexpectedly pulled out from his scheduled appearance at Star Wars Celebration in Japan, citing changes in his production schedule. This news broke over the weekend via the event's official social media channels, leaving fans buzzing with theories.

Isaac's absence from Star Wars Celebration was particularly notable since his appearance was announced back in February, fueling hopes of seeing Poe Dameron back in action in the Star Wars universe. The precedent set by Daisy Ridley's announcement of her return at Star Wars Celebration 2023 only added to the speculation. However, with Avengers: Doomsday currently filming in London, many fans are now connecting the dots, suggesting Isaac might be joining the Avengers saga as Moon Knight.

Social media erupted with excitement and speculation:

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 is still just that—a theory—Marvel Studios has a reputation for keeping fans on their toes. Although Isaac was not part of the initial cast announcement for Avengers: Doomsday, Marvel Studios producer Kevin Feige hinted during a video call at CinemaCon that not all cast members were revealed in the livestream. "We revealed many, not all," Feige stated, leaving room for surprises.

Isaac previously starred in the six-episode series Moon Knight in 2022, but there has been no official word on a follow-up season. Meanwhile, Avengers: Doomsday is slated for a theatrical release 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 have been dissecting Robert Downey Jr.'s recent Doctor Doom-themed birthday invitation, adding another layer of intrigue to the MCU's future.

The cast reveal for Avengers: Doomsday last month was a major highlight, featuring a strong contingent of veteran X-Men actors such as Kelsey Grammer (Beast), Patrick Stewart (Professor X), Ian McKellen (Magneto), Alan Cumming (Nightcrawler), Rebecca Romijn (Mystique), and James Marsden (Cyclops). Grammer and Stewart have already made their MCU debuts, but McKellen, Cumming, Romijn, and Marsden are set to join the universe for the first time. This significant inclusion of X-Men characters has led many to wonder if Avengers: Doomsday might secretly be setting up an Avengers vs. X-Men storyline.