The final trailer for Marvel’s Avengers: Doomsday is dropping anytime soon. On Instagram, Robert Downey Jr. shared a new video teasing something for Avengers: Doomsday: “Patience, subjects… Time will tell. Doom won’t…” This hinted that a trailer is coming.
Ahead of the trailer’s release, two new descriptions of the Avengers: Doomsday final trailer have reportedly leaked on 4chan. From the descriptions, it seems Marvel is trying to reveal more spoilers before the release.

The first description reads:
The trailer opens with the voices of Robert Downey Jr.‘s Doctor Doom, Chris Evans‘ Steve Rogers, and Florence Pugh‘s Yelena. The trailer looks like one of the best Marvel Studios has ever made.
The collision between two worlds is shown, followed by a scene featuring Doom in Latveria with voice-over narration. A battle scene features Steve, Thor, Reed, and Doom. Nightcrawler, Beast, Sentry, and Danny Ramirez also appear in the trailer.
There is a battle scene involving Magneto, followed by a scene showing Wolverine and Spider-Man (Tobey Maguire) fighting. The footage then shows the destroyed Avengers Tower and Latveria engulfed in war, with numerous followers of Doom.
The second rumored trailer description reads:
Avengers: Doomsday trailer opens with Robert Downey Jr.’s Doctor Doom speaking in a scary tone, saying, “Unknown dialogue.”
Our first look at Latveria, specifically Doomstadt, is expected. The sky is black, with green mist surrounding the castle. The scene then switches to the Marvel Studios intro, which has been changed to green.

We then see another look at the Earth-616 heroes, including an extended scene of Steve meeting Thor. The collision of two worlds is shown, followed by intense battle scenes featuring Steve Rogers, Thor, and Reed Richards fighting Doom. Nightcrawler and Beast also appear in the trailer before the voice-over stops.
Next, we see Cyclops using his visor blast against Doom, who responds with an ABSOLUTE blast that nearly kills him. The scene then switches to Florence Pugh’s Yelena, who says something before showing God Loki sitting on his throne and staring at something with a terrified expression.
A battle scene involving Magneto follows. Wolverine and Deadpool also appear, with webs visible in the background. We then see Earth-10005 destroyed.
Avengers Tower and the Baxter Building are destroyed once again. The trailer ends with MILLIONS OF DOOMBOTS rushing toward the Avengers.
The title Avengers: Doomsday then appears with the iconic Infinity War-style reveal, followed by the release date, 12.18.26, and a Doomsday countdown.
Finally, Doom says, “One day, you will forgive me.”
Directed by Anthony and Joe Russo, the film is written by Michael Waldron, Stephen McFeely, Chris McKenna, and Erik Sommers, with additional writing credits going to Jeff Loveness, Andrew Lanham, Destin Daniel Cretton, Ryan Reynolds, and Hugh Jackman.
Here’s the synopsis for Avengers: Doomsday:
“Not since the Time Heist to undo Thanos’ Snap have this many champions teamed up to save the day. When it’s discovered that three universes are set on a deadly collision course, the heroes of those worlds — the Avengers, the New Avengers, the Wakandans, the Fantastic Four, and the X-Men — form new alliances to face an unprecedented catastrophe.
Not only must these groups unite, but individual legends must embark on journeys across the Multiverse with partners they have only just met. They must learn to trust each other and rely on the strengths of strangers at a time when nothing is certain — except the sky-high stakes.”
Avengers: Doomsday Cast Details:
- Robert Downey Jr. as Doctor Doom
- Chris Evans as Steve Rogers
- 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
- Hayley Atwell as Peggy Carter
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: Endgame Encore is now available on Disney+, and Avengers: Doomsday arrives in theaters on December 18, 2026.



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