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

In a surprising turn of events, it seems Oscar Isaac might be reprising his role as Moon Knight in the upcoming Marvel blockbuster, Avengers: Doomsday. This speculation gained traction after Star Wars Celebration announced that Isaac would not be attending the event in Japan due to changes in his production schedule. Originally set to appear, Isaac's absence sparked a flurry of theories among fans.

Back in February, Isaac's scheduled appearance at Star Wars Celebration had fans buzzing about the potential return of Poe Dameron. The event had already seen Daisy Ridley confirm her role in a new Star Wars film, leading to speculation about Isaac's involvement in similar projects. However, the recent shift in his schedule has led many to believe he might be gearing up to join the cast of Avengers: Doomsday, which is currently filming in London.

Social media has been abuzz with reactions to this news:

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 compelling, it remains unconfirmed. Marvel Studios is known for its surprises, and although Isaac's name was not part of the official cast reveal for Doomsday, Kevin Feige hinted at more cast announcements to come. "We revealed many, not all," Feige mentioned during a video call at CinemaCon, leaving room for speculation and excitement.

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

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

The cast reveal for Avengers: Doomsday last month was dominated by veteran X-Men actors, including Kelsey Grammer, Patrick Stewart, Ian McKellen, Alan Cumming, Rebecca Romijn, and James Marsden. This has led to speculation about whether Avengers: Doomsday could be setting up an epic clash between the Avengers and the X-Men. Grammer's Beast made his MCU debut in The Marvels' post-credits scene, while Stewart's Professor X appeared in Doctor Strange in the Multiverse of Madness. The inclusion of other X-Men stars who have yet to appear in the MCU adds to the excitement and mystery surrounding the film.