Avengers: Doomsday Character Guide: Cast, Cameos and New Looks

The film pulls from three corners of the Marvel universe. You get the established Avengers, the returning X-Men, and the new Fantastic Four. Doctor Doom ties them all together as the villain. Marvel confirmed most of the cast in a record-breaking livestream that named 27 actors. More names have surfaced since, with a few revealed at San Diego Comic-Con.

We will take each group in turn. To keep things clear, every name in this guide is sorted as confirmed, rumored, or unverified in the classification table further down.

Here's the next section. It carries the master classification table, which does the heavy enumerating so the later roster sections can stay short.

The core Avengers form the backbone of the film. Most are familiar faces from the last decade of Marvel movies.

Thor leads the returning heroes, played again by Chris Hemsworth. Anthony Mackie is back as Captain America, with Sebastian Stan as Bucky Barnes at his side. Tom Hiddleston returns as Loki, and Paul Rudd carries on as Ant-Man.

Several newer heroes join them. Danny Ramirez appears as Joaquín Torres, the new Falcon. Wyatt Russell returns as US Agent, and Kathryn Newton is back as Cassie Lang.

Marvel confirmed two more fan favorites later. Chris Evans returns as Steve Rogers, and Hayley Atwell reprises Peggy Carter, a name revealed at Comic-Con.

The table below sorts the main Marvel Doomsday characters by status, drawn from Marvel's official cast list. It is your quick reference for the whole guide.

Doctor Doom is the reason all these worlds collide. He is the film's central villain and its biggest draw.

Robert Downey Jr. plays the role, a casting choice Marvel revealed at San Diego Comic-Con. He is not returning as Tony Stark. This is a brand-new character, Victor Von Doom, the armored ruler of Latveria.

That switch is a bold move. Fans know Downey as Iron Man, so seeing him as Doom flips a decade of history on its head. And it hands the film a villain with real weight behind him.

The villain’s armor is also one of the most detailed designs in the movie. We break it down piece by piece in our Doctor Doom's Avengers: Doomsday Suit: Design and Costume Breakdown.

The Fantastic Four bring a different kind of stakes to this movie. They already know Doom, and that history makes their presence here personal rather than incidental.

Pedro Pascal reprises Reed Richards, the team's stretchable genius and the one most likely to go head to head with Doom on strategy rather than raw power. Vanessa Kirby returns as Sue Storm, the Invisible Woman, whose force fields make her one of the team's most versatile assets in a large-scale fight. Joseph Quinn plays Johnny Storm, the Human Torch, and Ebon Moss-Bachrach steps back in as Ben Grimm, the Thing. All four are confirmed, carrying over directly from The Fantastic Four: First Steps.

Their costumes carry that same continuity. Expect the blue and silver uniforms established in their solo film rather than a full redesign, though minor tweaks for this ensemble setting wouldn't be surprising. We cover those details, along with each member's individual look, in our Fantastic Four Costumes in Avengers: Doomsday Explained.

There's a fan theory worth flagging here too. Some viewers have connected Doom's larger plan to Franklin Richards, Reed and Sue's son in the comics, based on a mannequin spotted during a set visit. Marvel hasn't confirmed anything about Franklin's presence in this film, so that stays firmly in unverified territory for now.

This is the crossover longtime fans never thought they'd see on screen. The X-Men films and the MCU kept separate for over a decade. That wall comes down here.

Patrick Stewart is back as Professor Charles Xavier, and Ian McKellen returns as Magneto, reuniting two actors whose onscreen rivalry defined the franchise's early years. James Marsden rejoins as Cyclops, Rebecca Romijn slips back into Mystique, and Alan Cumming reprises Nightcrawler. Kelsey Grammer rounds out the group as Hank McCoy, Beast, alongside Channing Tatum's Gambit. All seven are officially cast, not rumored additions.

Cyclops draws particular attention here, since his suit sits at the center of one of this cluster's most searched costume questions. We break down his look, along with the rest of the team's redesigns, in our Avengers: Doomsday X-Men Costumes and Suits Explained.

Early reports suggest at least one scene puts these X-Men face to face with the newer Avengers lineup, a meeting point the comics have explored for decades but live action never attempted. Nothing about the specific plot mechanics behind that meeting has been confirmed, so treat any deeper detail as a rumor for now.

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Doom's fight pulls in nearly every corner of the MCU. This is the section where the roster gets genuinely sprawling.

Chris Hemsworth is set to return as Thor, and Anthony Mackie is back as Sam Wilson, the current Captain America. Paul Rudd steps back in as Scott Lang, Ant-Man, with Kathryn Newton joining him as Cassie Lang, Stature. Danny Ramirez fills out that corner as Joaquín Torres, Falcon.

The Thunderbolts squad, also billed as the New Avengers, brings its own lineup. Florence Pugh returns as Yelena Belova, alongside Sebastian Stan's Bucky Barnes, Wyatt Russell's John Walker, David Harbour's Red Guardian, Hannah John-Kamen's Ghost, and Lewis Pullman's Sentry. Tom Hiddleston slips back into Loki, a character whose comic book ties to Doom go back decades.

A handful of wider MCU heroes complete the lineup. Letitia Wright is confirmed as Shuri, Winston Duke returns as M'Baku, Simu Liu rejoins as Shang-Chi, and Tenoch Huerta is back as Namor. All of the names above are officially cast, confirmed through Marvel's own casting announcements rather than leaks.

Not everyone is locked in, though. Benedict Cumberbatch's involvement as Doctor Strange has been reported by multiple outlets but hasn't received a direct studio confirmation, so it stays rumored for now. Reports connecting Chris Evans and Hayley Atwell to the film remain unverified as well.

For the full picture of how every one of these heroes' costumes fits into the bigger comic accuracy conversation, our Avengers: Doomsday Costumes, Suits and Comic Accuracy pillar guide covers the ensemble in more depth.

Every big Marvel crossover comes with a wave of leaks, and this one is no different. Sorting out which doomsday characters are real versus rumored takes some digging.

The loudest current rumor involves Tobey Maguire. Merchandise leaks tied to an upcoming toy reveal have fueled speculation that his version of Spider-Man appears early in the film with an expanded role, though nothing from Marvel Studios has confirmed this. Treat it as unverified until an official announcement lands.

Interestingly, Tom Holland's Spider-Man is notably absent from every confirmed cast list released so far. Some fans read that as a sign his character sits out this particular chapter, while others suspect a deliberate marketing blackout. Either way, his status remains unconfirmed rather than denied outright.

Much of this speculation traces back to leaked photos and merchandise spotted before any official reveal. Our Avengers: Doomsday Set Photos: Characters, Costumes and Clues hub tracks these leaks in more depth and separates the credible sightings from the fabricated ones.

And it's worth repeating the golden rule here. A leaked photo is not a script, and a rumor circulating widely doesn't make it fact.

Costume changes across this ensemble tell their own story, and several are worth calling out on their own.

Doctor Doom's suit is the most significant redesign in the film, moving away from every prior live-action version toward a look closer to his comic roots. The X-Men also arrive with updated looks rather than a straight repeat of their original film costumes. Cyclops in particular trades his classic yellow and blue for something more tactical.

Confirmed redesigns aside, some character looks remain speculative. The rumored "Latverian Witch" costume spotted at a 2026 convention has no confirmed wearer, so any claim tying it to a specific hero stays unverified for now.

Is Elliot Page in Avengers: Doomsday?
No casting announcement has confirmed Elliot Page's involvement. Searches linking his name to the film stem from fan speculation rather than any official source.

Are all the leaked cast names accurate?
Some leaked names have since been confirmed through official channels, but others remain unverified. Treat any name without a studio announcement or credible outlet confirmation as a rumor until proven otherwise.

Will more characters be added before release?
Likely. Marvel has historically kept a few reveals back for marketing closer to release, so this list may grow as December approaches.