Another Avengers: Doomsday leak is making the rounds, this time involving what’s claimed to be X-Men music from the film, adding to growing speculation about Marvel’s upcoming epic crossover.
The track has surfaced online alongside renewed discussion about the confirmed X-Men lineup and how Marvel plans to integrate mutants across its next wave of releases.
Spider-Man may also be involved.
Claimed Avengers: Doomsday Music Surfaces
What’s being shared online is described as X-Men music tied directly to Avengers: Doomsday.
While Marvel has not confirmed its authenticity, the timing is notable, arriving amid a teaser rollout attached to Avatar: Fire and Ash that has already seen character-focused teasers for Steve Rogers and Thor leak online.
As with the trailers, the studio has yet to address the leak publicly. If it gets taken down via a copyright issue, that will be the confirmation.
The Russo Brothers have also released a new teaser.
AVENGERS DOOMSDAY X MEN THEME
— Doom’s Servant (@lakersspammer) December 18, 2025
WE ARE EATING GOOD pic.twitter.com/5Jsl7oU7Ps
Confirmed X-Men Cast Members
Marvel has already locked in several legacy X-Men actors for Avengers: Doomsday.
The confirmed X-Men include Patrick Stewart, Ian McKellen, Alan Cumming, Rebecca Romijn, James Marsden, Kelsey Grammer, and Channing Tatum, signaling a major reunion of the original film-era lineup alongside newer Marvel characters.
Jean Grey Reportedly Appearing in Spider-Man: Brand New Day
Adding to the mutant momentum, Sadie Sink is now said to be playing Jean Grey in Spider-Man: Brand New Day.
If accurate, it would mark Jean Grey’s MCU introduction ahead of Avengers: Doomsday, positioning her as part of Marvel’s broader mutant rollout rather than saving the reveal for the Avengers film itself.
Marvel has not officially confirmed who Sink is playing or Jean Grey’s involvement.
Release info
Spider-Man: Brand New Day gets released on July 31, 2026.
Avengers: Doomsday will be released in theaters on December 18, 2026.
The confirmed cast includes Chris Evans, Chris Hemsworth, Anthony Mackie, Sebastian Stan, Paul Rudd, Letitia Wright, Florence Pugh, Simu Liu, Tom Hiddleston, Wyatt Russell, David Harbour, Winston Duke, Danny Ramirez, Hannah John-Kamen, Pedro Pascal, Vanessa Kirby, Joseph Quinn, Ebon Moss-Bachrach, Patrick Stewart, Ian McKellen, Alan Cumming, Rebecca Romijn, James Marsden, Kelsey Grammer, Channing Tatum, Tenoch Huerta Mejía, Lewis Pullman, and Robert Downey Jr.
(note: featured image of Robert Downey Jr. as Doctor Doom is fan art)
