(FYI: This post contains potential spoilers for Marvel’s Avengers: Doomsday.)
A big update on Marvel’s Avengers: Doomsday has been leaked online. According to the new report, Robert Downey Jr.’s Doctor Doom will have a mission powerful enough to resonate with some of our heroes — to the point that they’ll feel Doom might actually be right.
A leak shared by X user @majestic_ucm reveals that a major part of the plot involves Doom kidnapping Franklin Richards and taking him to another universe. Characters from Earth-616 and the X-Men universe will reportedly have a major battle.

It is also said that there will be a fight scene between Shang-Chi and Beast. Additionally, it was mentioned that there might be two versions of Yelena in the movie, which could mean Yelena vs. Mystique. Captain America (Sam Wilson) will be fighting Cyclops, Captain Marvel will face Binary, Reed Richards will fight Nightcrawler, and Colossus will battle The Thing.
Tobey Maguire’s Spider-Man is confirmed to appear in Avengers: Doomsday, although it’s unclear how big his role will be. He’s said to appear at least in the beginning of the film in some capacity.
Chris Evans is also confirmed to be in the movie. It’s not entirely clear who he’s playing, but he’s listed on the call sheet as Luke Cage — a placeholder name used to prevent leaks. He’s not actually playing that character, though rumors suggest he could be portraying Nomad. It was also said that Marvel didn’t expect his casting to leak, which explains why Chris publicly denied his involvement — but he’s reportedly 100% in the film.
Additionally, reports that the team has been filming while the script is still incomplete are true.
Major Locations Rumored to Be Featured in Avengers: Doomsday
• Earth-616 – The Sacred Timeline
• Earth-828 – Home of the Fantastic Four
• Earth-10005 – X-Men Universe
• Steve Rogers and Peggy Carter’s House
• Latveria
• The Void
• The Observational Plane
• The TVA
Recently, insider Daniel Richtman revealed on his Patreon post that Avengers: Doomsday will reportedly feature multiple versions of Doctor Doom, including female Dooms.
Directed by the Russo brothers from a screenplay by their longtime collaborator Stephen McFeely and Michael Waldron. The film features cinematography by Newton Thomas Sigel (Bohemian Rhapsody, X-Men: Days of Future Past) and production design by Kasra Farahani.
Here’s the plot synopsis for Avengers: Doomsday, revealed by Disney China:
“Doctor Doom has officially arrived on the Marvel Cinematic Universe stage. This villain, a master of cutting-edge science and powerful magic, will unleash a cascading crisis across the multiverse. Marvel’s most iconic actor, Robert Downey Jr., also returns as Doctor Doom!”
Announced Cast for Avengers: Doomsday
- Robert 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
- Hannah John-Kamen as Ghost
- Lewis Pullman as Sentry
X-Men cast:
- 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
- Channing Tatum as Gambit
Fantastic Four cast:
- 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)
Produced by Kevin Feige, Louis D’Esposito, and Russo Brothers will produce through their AGBO banner.
Avengers: Doomsday will be released in theaters and IMAX across the United States on December 18, 2026, and Avengers: Secret Wars is scheduled for release on December 17, 2027.
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