Avengers: Doomsday: Release Date, Cast, Trailer, Story and Everything We Know

Marvel fans have a big movie to look forward to in 2026. Avengers: Doomsday will bring many popular Marvel characters together, including the Avengers, Fantastic Four and X-Men characters.

The movie is set to release in theaters on December 18, 2026. Anthony Russo and Joe Russo are directing the film, while Stephen McFeely is writing the story.

One of the biggest surprises is Robert Downey Jr. as Doctor Doom. Downey is best known for playing Tony Stark, so seeing him return to the MCU as a villain has created a lot of interest.

The movie will also bring back several familiar faces, including Chris Evans, Chris Hemsworth, Tom Hiddleston and other major Marvel stars.

Here is everything we know so far about Avengers: Doomsday, including its release date, cast, trailer, Doctor Doom, story, X-Men connection, Fantastic Four connection and its link to Secret Wars.

Avengers: Doomsday Release Date

Avengers: Doomsday will be released in theaters on December 18, 2026.

Disney has confirmed the release date on its official movie page. The film is being made for a theatrical release and is expected to be one of Marvel’s biggest movies in 2026.

The December release also puts the movie close to the holiday season, when many big movies arrive in cinemas.

The release date is also important because Avengers: Secret Wars is currently scheduled to arrive on December 17, 2027.

This means Doomsday and Secret Wars are planned to arrive almost exactly one year apart.

Avengers: Doomsday Cast

The Avengers: Doomsday cast includes actors from several Marvel movies and franchises.

The official Disney cast list includes Robert Downey Jr., Chris Evans, Chris Hemsworth, Pedro Pascal, Paul Rudd, Anthony Mackie, Florence Pugh, Vanessa Kirby, Ebon Moss-Bachrach, Wyatt Russell, Channing Tatum, Simu Liu, Ian McKellen, Tom Hiddleston, James Marsden, Patrick Stewart and many others. (movies.disney.com)

Here is a closer look at the main cast and their characters.

Robert Downey Jr. as Doctor Doom

Robert Downey Jr. is returning to Marvel, but he is not coming back as Iron Man.

This time, he plays Victor von Doom, also known as Doctor Doom.

Downey played Tony Stark for many years and became one of the main faces of the MCU. Tony’s story ended in Avengers: Endgame, so his return in a different role has been a major talking point.

Doctor Doom is one of Marvel’s most well-known villains. He is closely linked to the Fantastic Four in the comics and is known for his intelligence, armor and powerful abilities.

Marvel has confirmed that Downey is playing Victor von Doom. (movies.disney.com)

The movie has not revealed all of Doctor Doom’s plans yet.

Chris Evans as Steve Rogers

Chris Evans is returning as Steve Rogers.

Evans played Captain America in many of the MCU’s biggest movies. Steve Rogers became one of the main leaders of the Avengers and played a major role in the Infinity Saga.

His story changed at the end of Avengers: Endgame, making his return one of the biggest questions around Doomsday.

Marvel has confirmed that Evans is part of the movie. The trailers also show Steve Rogers as part of the story.

Chris Hemsworth as Thor

Chris Hemsworth returns as Thor.

Thor has been part of the MCU since 2011 and was one of the original Avengers.

He has fought alongside many of Marvel’s biggest heroes, including Captain America, Iron Man and Hulk.

His return means another member of the original Avengers team will be part of the new movie.

Pedro Pascal as Reed Richards

Pedro Pascal plays Reed Richards, also known as Mister Fantastic.

Reed is the leader of the Fantastic Four and is known for his scientific knowledge and ability to stretch his body.

His character is especially interesting in a movie involving different universes because Reed is one of Marvel’s smartest heroes.

Vanessa Kirby as Sue Storm

Vanessa Kirby plays Sue Storm, also known as Invisible Woman.

Sue is one of the main members of the Fantastic Four and has the ability to become invisible and create powerful force fields.

She is also Reed Richards’ wife and an important part of the Fantastic Four team.

Joseph Quinn as Johnny Storm

Joseph Quinn plays Johnny Storm, also known as the Human Torch.

Johnny can create fire, control flames and fly.

He is Sue Storm’s brother and one of the more energetic members of the Fantastic Four.

Ebon Moss-Bachrach as Ben Grimm

Ebon Moss-Bachrach plays Ben Grimm, also known as The Thing.

Ben is one of Reed Richards’ closest friends and a member of the Fantastic Four.

His body has a rocky appearance and gives him great strength.

Anthony Mackie as Sam Wilson

Anthony Mackie returns as Sam Wilson, the current Captain America.

Sam took over the Captain America shield from Steve Rogers.

This makes his meeting with Steve Rogers one of the interesting parts of the movie for longtime MCU fans.

Paul Rudd as Ant-Man

Paul Rudd returns as Scott Lang, better known as Ant-Man.

Scott can change his size and has been part of the MCU since his first solo movie.

He also played an important role in Avengers: Endgame.

Florence Pugh as Yelena Belova

Florence Pugh returns as Yelena Belova.

Yelena first appeared in Black Widow and later became one of the important characters in the newer group of Marvel heroes.

She is also connected to the story of the Thunderbolts.

Sebastian Stan as Bucky Barnes

Sebastian Stan returns as Bucky Barnes, also known as the Winter Soldier.

Bucky has been part of the MCU since the first Captain America movie.

His friendship with Steve Rogers goes back to their childhood, so Chris Evans and Sebastian Stan appearing in the same movie is especially interesting.

Wyatt Russell as U.S. Agent

Wyatt Russell returns as John Walker, also known as U.S. Agent.

Walker was introduced in The Falcon and the Winter Soldier.

He was originally chosen to replace Steve Rogers as Captain America but later became U.S. Agent.

David Harbour as Red Guardian

David Harbour returns as Red Guardian.

The character first appeared in Black Widow as a former Soviet super-soldier.

He later became part of the group seen in Thunderbolts.

Lewis Pullman as Sentry

Lewis Pullman plays Bob, also known as Sentry.

Sentry is one of the most powerful characters in Marvel.

He was introduced to the MCU in Thunderbolts and is now part of the Avengers: Doomsday cast.

Channing Tatum as Gambit

Channing Tatum plays Gambit, a popular X-Men character.

Gambit is a mutant who can charge objects with energy. He is also known for using playing cards as weapons.

Tatum had been attached to a Gambit movie for years, but that project never reached theaters.

His appearance in Avengers: Doomsday finally brings him into a major Marvel movie.

Ian McKellen as Magneto

Ian McKellen returns as Magneto.

McKellen played Magneto in several of the earlier X-Men movies.

Magneto is a powerful mutant who can control magnetic forces and metal.

His return is one of the biggest links between Avengers: Doomsday and the older X-Men movies.

Patrick Stewart as Professor X

Patrick Stewart returns as Professor Charles Xavier, better known as Professor X.

Stewart played Professor X in several X-Men movies.

Professor X is a powerful telepath and the leader of the X-Men in many Marvel stories.

His return is another major reason fans are expecting a strong X-Men connection in Doomsday.

James Marsden as Cyclops

James Marsden returns as Cyclops, also known as Scott Summers.

Cyclops is one of the main X-Men characters and can fire powerful energy beams from his eyes.

Marsden previously played Cyclops in the original X-Men movie series.

Alan Cumming as Nightcrawler

Alan Cumming returns as Nightcrawler.

Nightcrawler is a mutant who can teleport.

Cumming previously played the character in X2: X-Men United.

His return brings another familiar X-Men character into the movie.

Kelsey Grammer as Beast

Kelsey Grammer returns as Beast, also known as Hank McCoy.

Beast is a scientist and mutant with great physical strength.

Grammer previously played the character in the X-Men movies.

Rebecca Romijn as Mystique

Rebecca Romijn returns as Mystique.

Mystique is a mutant who can change her appearance and copy the look of other people.

Romijn played Mystique in the earlier X-Men movies.

Tom Hiddleston as Loki

Tom Hiddleston returns as Loki.

Loki started as a villain in the MCU but later became a much more complicated character.

His story became closely connected to timelines and different universes through the Loki series.

That makes his appearance in a movie about the multiverse especially interesting.

Simu Liu as Shang-Chi

Simu Liu returns as Shang-Chi.

Shang-Chi was introduced in his own MCU movie and is one of Marvel’s strongest martial artists.

He also uses the Ten Rings, which give him powerful abilities.

Letitia Wright as Shuri

Letitia Wright returns as Shuri, the current Black Panther.

Shuri took on the Black Panther role in Black Panther: Wakanda Forever.

Her appearance also brings Wakanda into the story.

Winston Duke as M’Baku

Winston Duke returns as M’Baku.

M’Baku is the leader of Wakanda’s Jabari tribe.

He has appeared in several Black Panther movies and has become an ally of Wakanda.

Tenoch Huerta Mejía as Namor

Tenoch Huerta Mejía returns as Namor.

Namor is the ruler of Talokan and was introduced in Black Panther: Wakanda Forever.

He is one of the strongest characters connected to the underwater kingdom of Talokan.

Kathryn Newton as Cassie Lang

Kathryn Newton returns as Cassie Lang, Scott Lang’s daughter.

Cassie has grown from a supporting character into a young superhero in the MCU.

Her character became Stature in Ant-Man and the Wasp: Quantumania.

Danny Ramirez as Joaquin Torres

Danny Ramirez returns as Joaquin Torres.

Torres was introduced in The Falcon and the Winter Soldier and later became the new Falcon.

His appearance continues the story of the newer generation of Marvel heroes.

Hannah John-Kamen as Ghost

Hannah John-Kamen returns as Ghost, also known as Ava Starr.

Ghost first appeared in Ant-Man and the Wasp.

She can move through solid objects, which makes her abilities very different from most other Marvel characters.

Mabel Cadena as Namora

Mabel Cadena returns as Namora.

She is part of the Talokanil group introduced in Black Panther: Wakanda Forever.

Her return gives the Talokan storyline another connection to the larger MCU.

Avengers: Doomsday Cast Brings Different Marvel Teams Together

The cast of Avengers: Doomsday is much bigger than a normal superhero movie.

The movie brings together characters from several Marvel groups.

The Avengers side includes characters such as Thor, Captain America, Ant-Man and other MCU heroes.

The Fantastic Four are represented by Reed Richards, Sue Storm, Johnny Storm and Ben Grimm.

The X-Men side includes Professor X, Magneto, Cyclops, Beast, Mystique, Nightcrawler and Gambit.

Several characters connected to Thunderbolts are also part of the cast, including Yelena Belova, Bucky Barnes, U.S. Agent, Red Guardian, Ghost and Sentry.

The official Disney page confirms the main cast list. (movies.disney.com)

Who Is Doctor Doom in Avengers: Doomsday?

Doctor Doom is expected to be one of the most important characters in the movie.

His real name is Victor von Doom.

In Marvel Comics, Doom is strongly connected to the Fantastic Four and has a long history with Reed Richards.

He is known for being extremely intelligent and for using advanced armor and technology. He is also connected to magic and rules the fictional country of Latveria.

Robert Downey Jr. will play the character in Avengers: Doomsday.

This has created a lot of discussion because Downey was previously the actor behind Tony Stark.

However, Doctor Doom and Tony Stark are different characters.

Marvel has confirmed that Downey is playing Victor von Doom. Any further connection between Doom and Stark should be treated as a theory unless Marvel officially confirms it.

Avengers: Doomsday Trailer

Marvel has released the official trailer for Avengers: Doomsday.

The trailer gives viewers a much better idea of the movie and shows several of the major characters.

Doctor Doom gets a major focus, while the trailer also shows the Avengers, Fantastic Four and X-Men characters.

Marvel had released shorter teasers before the full trailer. Those teasers introduced individual characters and gave fans small pieces of information about the movie.

The official Disney page now includes the full trailer and other promotional videos. (movies.disney.com)

What Does the Avengers: Doomsday Trailer Show?

The trailer gives us several important clues.

Doctor Doom is at the center of the conflict.

The movie also brings characters from different Marvel worlds together.

The Fantastic Four have a major role, and several X-Men characters are shown as part of the larger story.

The trailer also makes the multiverse connection much clearer.

However, it does not explain every part of the story.

That is probably intentional. Marvel has a long history of keeping major story details hidden before its biggest movies are released.

Avengers: Doomsday Story and Plot

Marvel has not revealed the complete story of Avengers: Doomsday.

The official description says that heroes from three different universes face an existential threat and are brought toward a major conflict. (movies.disney.com)

This tells us that the movie will be much bigger than a normal Avengers mission.

Characters who normally exist in separate worlds will meet each other.

The Avengers are involved.

The Fantastic Four are involved.

The X-Men are involved.

Other MCU characters are also caught up in the conflict.

Doctor Doom appears to be at the center of the problem.

But Marvel has not revealed exactly what Doom wants or how the different universes become connected.

Because of this, many plot details found online are still theories or rumors.

Avengers: Doomsday and the Multiverse

The multiverse is a major part of Avengers: Doomsday.

The MCU has already introduced different timelines and alternate realities in movies and series such as Doctor Strange in the Multiverse of Madness, Spider-Man: No Way Home and Loki.

Doomsday takes this idea much further.

Marvel’s official description says the movie involves heroes from three distinct universes. (movies.disney.com)

This helps explain why characters from the older X-Men movies can appear with current MCU characters.

It also explains the presence of the Fantastic Four and other characters from different Marvel stories.

Avengers: Doomsday and the X-Men

The X-Men connection is one of the biggest talking points around the movie.

The cast includes Patrick Stewart, Ian McKellen, James Marsden, Kelsey Grammer, Alan Cumming and Rebecca Romijn, all of whom are linked to the earlier X-Men movies.

Channing Tatum is also playing Gambit.

For fans of the original X-Men films, this means several familiar actors are returning to roles they played years ago.

The multiverse gives Marvel a way to bring these characters into the same movie as the MCU’s Avengers.

Exactly how their stories fit together is something the movie will explain.

Avengers: Doomsday and the Fantastic Four

The Fantastic Four have a major role in the movie.

The four main members are:

• Pedro Pascal — Reed Richards / Mister Fantastic
• Vanessa Kirby — Sue Storm / Invisible Woman
• Joseph Quinn — Johnny Storm / Human Torch
• Ebon Moss-Bachrach — Ben Grimm / The Thing

The team is especially important because Doctor Doom has a long history with the Fantastic Four.

Reed Richards and Doctor Doom are also two of Marvel’s most intelligent characters.

Their relationship could therefore become an important part of the story.

Avengers: Doomsday and the Return of Steve Rogers

Chris Evans’ return as Steve Rogers is another major part of the movie.

Steve Rogers’ story changed at the end of Avengers: Endgame.

His return therefore raises questions about what happened between Endgame and Doomsday.

The multiverse provides several possible explanations, but fans should wait for official information before treating any theory as fact.

What we know for sure is that Chris Evans is back as Steve Rogers.

Who Is Directing Avengers: Doomsday?

Anthony Russo and Joe Russo are directing Avengers: Doomsday.

The brothers have already directed four major MCU movies:

• Captain America: The Winter Soldier
• Captain America: Civil War
• Avengers: Infinity War
• Avengers: Endgame

They are therefore very familiar with large Marvel crossover movies.

Stephen McFeely is writing the film.

The official Disney page lists Kevin Feige, Louis D’Esposito and Jonathan Schwartz as producers. (movies.disney.com)

Why Are the Russo Brothers Returning?

The Russo brothers directed Infinity War and Endgame, two of Marvel’s biggest crossover movies.

Those films had very large casts and several storylines running at the same time.

Avengers: Doomsday has a similar challenge.

The movie includes Avengers characters, Fantastic Four characters, X-Men characters and heroes from newer MCU projects.

The Russo brothers already have experience working with this type of large cast.

Avengers: Doomsday and Secret Wars

Avengers: Doomsday is closely linked to Avengers: Secret Wars.

Secret Wars is currently scheduled for release on December 17, 2027.

Doomsday is scheduled for December 18, 2026.

The two movies are therefore expected to form part of the same larger Marvel story.

However, Marvel has not revealed the full connection between the two films.

Fans will have to wait for more trailers, interviews and official announcements.

Is Avengers: Doomsday Avengers 5?

Yes.

Avengers: Doomsday is commonly called Avengers 5 because it follows the previous four Avengers movies:

1. The Avengers
2. Avengers: Age of Ultron
3. Avengers: Infinity War
4. Avengers: Endgame
5. Avengers: Doomsday

The movie is the next major Avengers film after Endgame.

It also comes during the MCU’s larger multiverse storyline.

What Makes Avengers: Doomsday Different?

The size of the cast is one of the biggest differences.

The earlier Avengers movies mainly focused on characters already established in the MCU.

Doomsday brings together characters from different Marvel movie franchises.

The Avengers are there.

The Fantastic Four are there.

The X-Men are there.

Several newer MCU heroes are also involved.

Robert Downey Jr. is also playing a completely different character after spending years as Tony Stark.

This makes Doomsday a very unusual Marvel movie.

What Should You Watch Before Avengers: Doomsday?

You do not need to watch every Marvel movie and series before seeing Doomsday.

However, some movies and shows can give you useful background.

Avengers: Endgame

Endgame is one of the most useful movies to watch because it explains what happened to several original Avengers characters.

It also provides important background for Steve Rogers and the Avengers.

A new Avengers: Endgame Encore theatrical rerelease is scheduled for September 25, 2026, with new material connected to Doomsday. (ew.com)

The Fantastic Four: First Steps

This movie introduces the Fantastic Four characters who appear in Doomsday.

Watching it can help you understand Reed Richards, Sue Storm, Johnny Storm and Ben Grimm before they join the larger Avengers story.

Black Panther: Wakanda Forever

This movie introduces Namor and continues Shuri’s story as Black Panther.

Both characters are part of Avengers: Doomsday.

Black Widow

Black Widow introduces Yelena Belova.

Yelena later becomes part of the newer group of Marvel heroes.

Thunderbolts

Thunderbolts is useful for understanding several characters who appear in Doomsday, including Yelena, Bucky Barnes, U.S. Agent, Red Guardian, Ghost and Sentry.

Loki

The Loki series gives viewers more information about timelines and different realities.

Since Doomsday is heavily connected to the multiverse, Loki can help explain some of the ideas behind the story.

Avengers: Doomsday Confirmed Information vs Rumors

There are already many rumors about Avengers: Doomsday.

Some websites and social media accounts claim that certain characters will appear or that they know major parts of the ending.

Fans should be careful with these claims.

The safest information comes directly from Marvel Studios and Disney.

If Marvel has officially announced an actor or shown a character in its official promotional material, that information can be treated as confirmed.

If a character only appears in a social media post, fan theory or unnamed report, it should not automatically be treated as fact.

This is especially important for Doomsday because Marvel has several surprises that it is likely trying to keep secret until the movie arrives.

Avengers: Doomsday FAQs

When is Avengers: Doomsday releasing?

Avengers: Doomsday is scheduled to release in theaters on December 18, 2026.

Who plays Doctor Doom in Avengers: Doomsday?

Robert Downey Jr. plays Victor von Doom / Doctor Doom.

Is Robert Downey Jr. playing Iron Man again?

No. Marvel has confirmed that Downey is playing Doctor Doom, not Tony Stark.

Is Chris Evans returning to Avengers: Doomsday?

Yes. Chris Evans is returning as Steve Rogers.

Who is in the Avengers: Doomsday cast?

The cast includes Robert Downey Jr., Chris Evans, Chris Hemsworth, Pedro Pascal, Anthony Mackie, Paul Rudd, Florence Pugh, Vanessa Kirby, Ian McKellen, Patrick Stewart, Channing Tatum and many other actors.

Will the X-Men be in Avengers: Doomsday?

Yes. The announced cast includes several actors from the earlier X-Men movies, including Patrick Stewart, Ian McKellen, James Marsden, Kelsey Grammer, Alan Cumming and Rebecca Romijn. Channing Tatum is also playing Gambit.

Will the Fantastic Four be in Avengers: Doomsday?

Yes. Pedro Pascal, Vanessa Kirby, Joseph Quinn and Ebon Moss-Bachrach are returning as the four main members of the Fantastic Four.

Is Avengers: Doomsday connected to Secret Wars?

Yes. Avengers: Secret Wars is currently scheduled for December 17, 2027.

Is Avengers: Doomsday part of the MCU?

Yes. Avengers: Doomsday is a Marvel Studios movie and part of the Marvel Cinematic Universe.

Is Avengers: Doomsday Avengers 5?

Yes. It is the fifth main Avengers movie.

How many universes are involved in Avengers: Doomsday?

Marvel’s official description says that heroes from three distinct universes are involved in the story.

Final Thoughts

Avengers: Doomsday is bringing together a very large group of Marvel characters.

The movie has the Avengers, Fantastic Four, X-Men characters and several newer MCU heroes. Robert Downey Jr. is also returning as Doctor Doom, while Chris Evans is back as Steve Rogers.

The film’s multiverse story makes it possible for characters from different Marvel movie eras to appear together.

The release date is set for December 18, 2026, and the story is expected to lead into Avengers: Secret Wars in 2027.

There are still many questions about the movie, especially Doctor Doom’s plan and how all of these different characters will end up in the same story.

For now, it is best to follow information from Marvel and Disney and treat online leaks and fan theories carefully.

As more official details are released, the picture of Avengers: Doomsday will become clearer.