Avengers: Doomsday brings together one of the largest casts in Marvel history, combining heroes from across the MCU with the Fantastic Four, returning X-Men characters and Robert Downey Jr. as Doctor Doom.
The film arrives in cinemas on December 18, 2026, following the return of Avengers: Endgame to cinemas as Avengers: Endgame Encore. Here is the confirmed cast currently announced for Doomsday, grouped by the corners of the Marvel universe they represent.
Robert Downey Jr. Is Doctor Doom
Robert Downey Jr. returns to Marvel as Victor von Doom / Doctor Doom. His casting marks his first major MCU role since Tony Stark’s death in Avengers: Endgame, but Marvel is presenting Doom as a different character rather than simply bringing Iron Man back.
The Avengers And MCU Heroes Confirmed For ‘Doomsday’
The confirmed MCU roster includes characters from several different teams and franchises:
- Anthony Mackie as Sam Wilson / Captain America
- Chris Hemsworth as Thor
- Tom Hiddleston as Loki
- Sebastian Stan as Bucky Barnes / Winter Soldier
- Danny Ramirez as Joaquin Torres / Falcon
- Letitia Wright as Shuri / Black Panther
- Winston Duke as M’Baku
- Tenoch Huerta as Namor
- Simu Liu as Shang-Chi
- Paul Rudd as Scott Lang / Ant-Man
Chris Evans is also among the returning stars associated with the film, adding another major link back to the earlier Avengers era.
The Fantastic Four Are In ‘Avengers: Doomsday’
The full Fantastic Four lineup is confirmed to return:
- Pedro Pascal as Reed Richards / Mister Fantastic
- Vanessa Kirby as Sue Storm / Invisible Woman
- Joseph Quinn as Johnny Storm / Human Torch
- Ebon Moss-Bachrach as Ben Grimm / The Thing
Their involvement makes Doomsday one of the first major crossover events to directly bring Marvel’s First Family together with the wider MCU ensemble.
The Thunderbolts* Characters Returning
Several characters from Thunderbolts* are also part of the Doomsday ensemble:
- Florence Pugh as Yelena Belova
- Wyatt Russell as John Walker / US Agent
- Lewis Pullman as Bob / Sentry
- David Harbour as Red Guardian
- Hannah John-Kamen as Ghost
- Sebastian Stan as Bucky Barnes / Winter Soldier
The X-Men Returning In ‘Avengers: Doomsday’
Doomsday also brings back a number of actors associated with the earlier X-Men films:
- Patrick Stewart as Charles Xavier / Professor X
- Ian McKellen as Erik Lehnsherr / Magneto
- James Marsden as Scott Summers / Cyclops
- Rebecca Romijn as Mystique
- Alan Cumming as Nightcrawler
- Kelsey Grammer as Hank McCoy / Beast
The returning mutant cast significantly expands the scale of the film and strengthens its multiversal crossover element alongside the Fantastic Four and the MCU’s established heroes.
Channing Tatum Returns As Gambit
Channing Tatum is also set to return as Gambit following his appearance in Deadpool & Wolverine, further widening the group of legacy Marvel characters appearing in the film.
Who Is Not Confirmed For ‘Avengers: Doomsday’?
Marvel’s confirmed cast announcements should not be treated as a complete list of every character who could appear. Actors and characters not publicly confirmed should therefore be considered unannounced rather than definitively absent from the film.
That distinction is important for a project of this size, particularly with Marvel keeping major story details and potential surprises under wraps before release.
When Does ‘Avengers: Doomsday’ Release?
Avengers: Doomsday will be released in cinemas on December 18, 2026.
Before then, Marvel is returning Avengers: Endgame to cinemas as Avengers: Endgame Encore on September 25, including additional material connected to Doomsday. Disney has also said the film has already generated $50 million in advance ticket sales.
Avengers: Doomsday arrives in cinemas on December 18, 2026.
