X-Men Enter Marvel Studios Universe

by Sophie Laurent January 6, 2026

written by Sophie Laurent January 6, 2026

Key Takeaways

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The Avengers, X-Men, and Fantastic Four will converge in the upcoming Marvel Cinematic Universe film, Avengers: Doomsday, set to premiere on December 18, 2026.
The teaser for Avengers: Doomsday suggests that iconic X-Men characters such as Jean Grey and Storm may have died in an attack on the X-Mansion, potentially connecting their storyline to the events of 2024s Deadpool & Wolverine.
The teaser showcases Cyclops in his classic comic book attire and brings back familiar X-Men faces including Kelsey Grammer, Alan Cumming, Rebecca Romijn, and Channing Tatum. Emma Corrin joins the cast as Cassandra Nova in Deadpool & Wolverine.
The film will feature a confirmed battle between Nightcrawler and Mister Fantastic, signaling Marvel Studios intent to honor fan-favorite designs from one of the X-Mens most celebrated eras.

Marvel’s Avengers, X-Men, and Fantastic Four Converge in Doomsday Battle

Marvel Studios has released a teaser revealing the X-Men’s upcoming arrival in the Marvel Cinematic Universe. The teaser, previously leaked online in late 2025, is currently exclusive to theaters. The Avengers: Doomsday teaser reveals a devastated X-Mansion, where Charles Xavier and Magneto appear to reach an accord amidst the ruins. The cause of the destruction remains unseen, but the teaser does show Cyclops firing an optic blast at a Sentinel, hinting at the battle that took place. Set to premiere on December 18, 2026, Avengers: Doomsday marks the first live-action convergence of the Avengers, X-Men, and Fantastic Four. Anthony and Joe Russo directed the film, and Stephen McFeely and Michael Waldron wrote the screenplay. Adding intrigue to the plot, the Doomsday teaser suggests that iconic X-Men such as Jean Grey and Storm may have died in the attack that destroyed the X-Mansion. This detail could connect the X-Men’s storyline to the events of 2024’s Deadpool & Wolverine and may set the stage for emotional farewells and potential character deaths as they face Doctor Doom in the Avengers films.

Marvel Studios’ X-Men: Classic Era Reborn in Avengers: Doomsday

The teaser showcases Cyclops in his classic comic book attire: a blue bodysuit, yellow underwear, a yellow utility belt, a yellow X-Men symbol, and a yellow visor. The costume is evocative of the comic-accurate design featured in Dark Phoenix, which included a navy blue suit with a large yellow X across the shoulders and chest. The Doomsday teaser also brings back familiar X-Men faces, including Kelsey Grammer, Alan Cumming, Rebecca Romijn, and Channing Tatum. Emma Corrin joins the cast as Cassandra Nova in Deadpool & Wolverine. Grammer previously portrayed Beast in X-Men: The Last Stand. Adding to the excitement, Avengers: Doomsday will feature a confirmed battle between Nightcrawler and Mister Fantastic. The inclusion of Cyclops in his iconic 1990s costume signals Marvel Studios’ intent to honor fan-favorite designs from one of the X-Men’s most celebrated eras. This may represent a tribute to the classic iteration before introducing new or updated mutant costumes into the MCU. While Avengers: Doomsday is scheduled for theatrical release on December 18, anticipation is building for the X-Men teaser’s imminent arrival on social media.