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

Hold onto your hats, Marvel fans, because whispers of Oscar Isaac reprising his role as Moon Knight in the upcoming Avengers: Doomsday have sent shockwaves through the community. It's a theory that's gaining traction, fueled by recent developments that have left fans buzzing with excitement.

Over the weekend, Star Wars Celebration's official social media announced that Isaac would not be attending the convention in Japan this year due to "changes in his production schedule." Initially, Isaac's appearance at Star Wars Celebration was a major draw, stirring speculation about Poe Dameron's return to the Star Wars universe, much like Daisy Ridley's announcement at Star Wars Celebration 2023 about her involvement in a new film.

Although the specifics of Isaac's scheduling changes remain under wraps, the fact that *Avengers: Doomsday* is currently in production in London has led fans to connect the dots. Social media erupted with speculation about Moon Knight's potential involvement in the Avengers' latest epic:

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 remains unconfirmed, Marvel is known for its surprises. Although Isaac wasn't part of the initial Doomsday cast reveal, Marvel Studios producer Kevin Feige hinted at more cast members during a video call at CinemaCon, saying, "We revealed many, not all." This leaves room for hope that Isaac might indeed be part of the lineup.

Isaac previously starred as Moon Knight in a six-episode series released in 2022, but Marvel has yet to greenlight a second season. Meanwhile, Avengers: Doomsday is slated for release on May 1, 2026, promising a star-studded cast and an epic story as highlighted in the recent livestream.

In other Marvel news, fans are also buzzing about Robert Downey Jr.'s recent Doctor Doom-themed birthday party invitation, further fueling speculation about the MCU's future.

Who was the biggest surprise cast member revealed for Avengers: Doomsday? -------------------------------------------------------------------------

Tenoch Huerta Mejía (Namor)Kelsey Grammer (Beast)David Harbour (Red Guardian)Ian McKellen (Magneto)Lewis Pullman (Sentry)Alan Cumming (Nightcrawler)Rebecca Romijn (Mystique)Channing Tatum (Gambit)Other

AnswerSee ResultsLast month's *Avengers: Doomsday* cast reveal was heavy on veteran X-Men actors. Kelsey Grammer, Patrick Stewart, Ian McKellen, Alan Cumming, Rebecca Romijn, and James Marsden are all now set to appear in *Avengers: Doomsday*, confirming the X-Men's significant presence in the film. Grammer, known for his role as Beast in the Fox X-Men franchise, made his MCU debut via *The Marvels'* post-credits scene. Stewart, who portrayed Charles Xavier/Professor X, briefly appeared in the MCU in *Doctor Strange in the Multiverse of Madness* as part of the Illuminati. McKellen, who played Magneto, has yet to make his MCU debut, as have Cumming (Nightcrawler), Romijn (Mystique), and Marsden (Cyclops). This raises the intriguing question: is *Avengers: Doomsday* secretly an *Avengers vs. X-Men* movie?