(Spoiler Warning: This post contains major plot details from Marvel’s Avengers: Doomsday.)
Avengers: Doomsday production is underway in the United Kingdom. We have received major spoiler details about the filming status: instead of teaming up to fight Robert Downey Jr.‘s Doctor Doom, the Avengers and X-Men are engaged in a massive battle.
According to industry insider Daniel Richtman in a post on his Patreon, Marvel Studios is reportedly filming an “epic fight” scene featuring the Avengers battling the X-Men for Avengers: Doomsday. The X-Men will appear in comic-accurate suits.

We previously reported that Victor Von Doom will use the Avengers and the Fantastic Four against the X-Men, taking advantage of his resemblance to Tony Stark to present himself as an ally within the MCU.
A rumor from Spanish source QuidVacuo revealed, “Downey Jr. will also play an alternate version of Doctor Doom in Avengers: Doomsday. In this version, Doom secretly causes a conflict between the Avengers and the X-Men. He uses the Avengers to go against the Mutants in order to weaken both teams. His real plan is to reach a powerful energy source that could help him restore his own destroyed universe.”
An X-Men star also recently confirmed that he will be fighting a major Fantastic Four character in Doomsday.
In Avengers: Doomsday, the MCU begins the beginning of the end. As the multiverse nears total collapse, the Avengers assemble to face their greatest challenge yet—incursions, catastrophic collisions between realities that could destroy the entire multiverse. Earth’s Mightiest Heroes must race against time to save their reality while confronting the powerful figure behind it all—Victor Von Doom (Downey Jr.).
Directed by Russo brothers from a screenplay by their longtime collaborator, Stephen McFeely. Newton Thomas Sigel (Bohemian Rhapsody, X-Men: Days of Future Past) will be the cinematographer.
The official cast members of the film include Downey Jr. as Doctor Doom, Paul Rudd as Ant-Man, Simu Liu as Shang-Chi, Tom Hiddleston as Loki, Florence Pugh as Yelena Belova, Danny Ramirez as Falcon, Sebastian Stan as Bucky Barnes, Winston Duke as M’Baku, Chris Hemsworth as Thor, Letitia Wright as Black Panther, Tenoch Huerta Mejía as Namor, Anthony Mackie as Captain America, David Harbour as Red Guardian, Wyatt Russell as U.S. Agent, and Hannah John-Kamen as Ghost. Ian McKellen as Magneto, Patrick Stewart as Professor X, Rebecca Romijn as Mystique, James Marsden as Cyclops, Kelsey Grammer as Beast, Alan Cumming as Nightcrawler, and Channing Tatum as Gambit. Pedro Pascal as Reed Richards (Mr. Fantastic), Vanessa Kirby as Sue Storm (Invisible Woman), Joseph Quinn as Johnny Storm (Human Torch), Ebon Moss-Bachrach as Ben Grimm (The Thing), and Lewis Pullman as Sentry.
During The Hot Mic podcast, Jeff Sneider revealed the list of unannounced cast members for Avengers: Doomsday. See the list below.
- Mark Ruffalo — Bruce Banner / Hulk
- Benedict Wong — Wong
- Brie Larson — Captain Marvel (Carol Danvers)
- Hayley Atwell — Possibly Captain Carter (from What If…?) or Peggy Carter
- Don Cheadle — James Rhodes / War Machine
- Karen Gillan — Nebula
- Jeremy Renner — Clint Barton / Hawkeye
- Iman Vellani — Kamala Khan / Ms. Marvel
- Danai Gurira — Okoye
- Tessa Thompson — Valkyrie
- Ke Huy Quan — Ouroboros
- Teyonah Parris — Monica Rambeau / Photon
- Will Poulter — Adam Warlock (confirmed in other reports)
- Dominique Thorne — Riri Williams / Ironheart
- Xochitl Gomez — America Chavez
- Sophia Di Martino — Possibly Sylvie or another character from MCU’s Loki
- Tatiana Maslany — She-Hulk (Jennifer Walters)
- Yahya Abdul-Mateen II — Wonder Man
- Kathryn Newton — Cassie Lang / Stature
- Wunmi Mosaku — Hunter B-15
- Lashana Lynch — Captain Marvel (Maria Rambeau)
- Famke Janssen — Jean Grey (confirmed return of original X-Men actress)
- Halle Berry — Storm (confirmed return of original X-Men actress)
- Kai Zen Aspilla — Phyla-Vell
- Owen Wilson — Mobius M. Mobius
- Chris Pratt — Peter Quill / Star-Lord
- Samuel L. Jackson — Nick Fury
- Charlize Theron — Clea
- Benedict Cumberbatch — Doctor Strange
- Chris Evans — Steve Rogers / Captain America (rumored return)
- Bradley Cooper — Rocket Raccoon (voice)
- Vin Diesel — Groot (voice)
Produced by Kevin Feige, Louis D’Esposito, and Russo Brothers will produce through their AGBO banner.
Avengers: Doomsday hits theaters on May 1, 2026.
Source: Daniel Richtman