Oscar Isaac Exits Star Wars Event; MCU Fans Speculate Moon Knight in Avengers: Doomsday

Rumors are swirling that Oscar Isaac might be reprising his role as Moon Knight in the upcoming Avengers: Doomsday film, and fans are buzzing with excitement. The speculation began when Isaac unexpectedly withdrew from his scheduled appearance at Star Wars Celebration in Japan due to changes in his production schedule. Given that Avengers: Doomsday is currently being filmed in London, many fans are connecting the dots and theorizing that Isaac could be joining the cast.

Back in February, Isaac's participation in Star Wars Celebration had sparked hopes of Poe Dameron's return to the Star Wars universe, similar to Daisy Ridley's announcement of her involvement in a new film at the 2023 event. However, Isaac's sudden scheduling conflict has shifted the focus to the Marvel Cinematic Universe (MCU).

While Isaac's production schedule changes remain undisclosed, the timing and location align intriguingly with Avengers: Doomsday's production. Social media has been abuzz with fans speculating about Moon Knight's potential inclusion in the film:

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 note that Isaac's involvement in Avengers: Doomsday remains speculative. He was not included in the initial cast reveal for the film. However, Marvel Studios producer Kevin Feige hinted that not all cast members were disclosed during the livestream, stating, "We revealed many, not all," which keeps the door open for surprises.

Isaac's only appearance as Moon Knight so far was in the 2022 six-episode series, and there has been no official word on a follow-up. Avengers: Doomsday is slated for release on May 1, 2026, and is expected to feature a vast ensemble of returning heroes and new faces.

In other MCU news, fans have been intrigued by Robert Downey Jr.'s recent Doctor Doom-themed birthday invitation, further fueling speculation and excitement about the future of the MCU.

The Avengers: Doomsday cast reveal last month included several notable X-Men actors, such as Kelsey Grammer as Beast, Patrick Stewart as Professor X, Ian McKellen as Magneto, Alan Cumming as Nightcrawler, Rebecca Romijn as Mystique, and James Marsden as Cyclops. This significant inclusion of X-Men characters has led fans to wonder if Avengers: Doomsday might secretly be an Avengers vs. X-Men movie.

With all these developments, the MCU continues to captivate and surprise its audience, leaving fans eagerly anticipating what's next.