Doctor Doom may not enter Avengers: Doomsday believing he is the villain.

The most likely version of Marvel’s coming multiverse war begins with Victor von Doom convinced that reality is already dying—and that only he possesses the intelligence and power to rebuild it. His solution, however, could require entire universes to disappear.

Marvel’s official description says heroes from three separate realities will be placed on a “deadly collision course” while confronting an unprecedented existential threat. The first full trailer adds crucial clues: Doom prepares for war, the Avengers encounter the X-Men, the Fantastic Four enter the main Marvel universe, and old allies initially appear divided rather than united.

Those details point toward a story in which Doom does not merely attack Earth. He manipulates several worlds into fighting one another, then uses the resulting catastrophe to seize control of what remains.

Doom’s Tragedy May Begin the War

The footage shown at San Diego Comic-Con gives Doom a surprisingly personal motivation.

Sue Storm describes Victor as a brilliant but broken man who once behaved differently. She suggests that everything he loved was taken from him, while Doom accuses the heroes of living lives that were somehow “stolen.” The footage also establishes that Reed Richards and Sue already share a complicated history with him.

That language strongly suggests Doom has lost his family, his homeland or perhaps his entire universe because of multiversal instability.

Rather than seeking power for its own sake, he may believe certain realities have survived by taking time, energy or possibilities from others. Earth’s heroes would therefore represent something offensive to him: people who repeatedly changed history, reversed death and escaped consequences while other worlds collapsed.

Doom’s argument could be simple. The multiverse cannot support countless competing realities forever. Someone must decide which lives continue.

Naturally, he appoints himself.

The Avengers and X-Men Could Begin as Enemies

Marvel has confirmed that the story brings together heroes from three universes. The announced cast includes the Avengers, the New Avengers, the Fantastic Four, Wakandan figures and veteran X-Men characters such as Professor Xavier, Magneto, Cyclops, Mystique, Nightcrawler and Beast.

The phrase “collision course” is probably literal as well as emotional.

An incursion or similar multiversal event could place the heroes in an impossible situation: save their own universe or allow another reality to survive. Doom may present each group with evidence that the others are responsible for the approaching destruction.

The X-Men would have little reason to trust unfamiliar superhumans arriving from another world. Magneto, in particular, may view the crisis through the history of mutant persecution. Meanwhile, Sam Wilson’s Avengers and Yelena Belova’s New Avengers are already separate teams with different leaders and methods.

Early battles could therefore include Avengers against X-Men, Wakanda against Talokan and established heroes against the morally complicated New Avengers.

The trailer supports this prediction by showing Gambit fighting Shang-Chi, Mystique transforming into Yelena and tension between Wakandan and Talokan forces.

Doom would not need to defeat every hero directly. He would only need to convince them that survival requires defeating one another.

The Sentinels May Be Doom’s Weapon Against the X-Men

The Comic-Con footage reveals Doom raising an army of Sentinels, the machines traditionally created to hunt mutants.

That image may explain how the X-Men’s universe becomes involved.

Doom could take control of Sentinel technology and transform it into a multiversal army capable of identifying, tracking and eliminating superpowered threats. The machines may initially attack mutants, pushing Magneto and Xavier into the conflict before expanding their targets to include Avengers and the Fantastic Four.

There is also a more disturbing possibility. Doom may convince one universe that another world’s heroes are dangerous invaders, allowing him to present the Sentinels as instruments of protection.

Once the worlds are divided, the machines become his occupation force.

Steve Rogers Could Be the Proof Doom Needs

Chris Evans is officially returning as Steve Rogers, while the early teaser revealed that Steve now has a child. Hayley Atwell has also been confirmed to return as Peggy Carter.

Steve’s peaceful life may become one of the story’s central moral conflicts.

At the end of Avengers: Endgame, he returned the Infinity Stones and then chose to remain in the past with Peggy. Whatever rules ultimately explain that decision, Steve created or entered a life that was not part of the future his teammates originally knew.

To Doom, that may be another “stolen” life.

Steve achieved what Victor could not: he escaped war, recovered the woman he lost and built a family beyond the limits of ordinary time. Doom may see his existence as proof that heroes have selfishly damaged reality while pretending their choices were noble.

The trailer shows Steve reuniting with Thor and again lifting Mjolnir.

His return is therefore unlikely to be a brief nostalgic appearance. Steve may have to decide whether preserving his family is worth risking an entire universe—or whether being Captain America requires him to surrender the life he fought so hard to reclaim.

Loki May Be Doom’s True Target

Tom Hiddleston is confirmed to appear, but Loki has been largely absent from the promotional footage beyond brief glimpses.

That secrecy may be intentional.

Loki currently occupies a unique place in Marvel’s multiverse story. Doom may need access to whatever force is holding the branching timelines together, making Loki more important than any conventional weapon.

The heroes could spend much of the movie believing Doom wants to conquer their worlds, only to discover that his true objective is reaching the center of the multiverse.

If Doom can remove Loki, absorb his power or replace him, he could gain the ability to decide which realities remain alive. That would elevate him beyond a ruler of one nation or universe.

He would become the architect of existence itself.

Reed Richards Will Probably Understand Doom Too Late

Although dozens of heroes appear in the film, the emotional center may ultimately belong to Reed Richards and Victor von Doom.

The Comic-Con footage establishes that the Fantastic Four knew Victor before his transformation and that Sue remembers the person he used to be. Reed is also shown questioning whether Doom caused the destruction surrounding them.

Reed will probably recognize Doom’s plan before the Avengers do because he understands both Victor’s genius and his need to prove himself superior.

Their conflict may not center on whether the multiverse is in danger. Both men could agree that reality is collapsing.

They will disagree over who has the right to choose the survivors.

Reed will search for a solution that saves every possible world. Doom will consider that hope naïve and dangerous. When Reed fails to stop the incursions quickly enough, Victor may use that failure to justify taking absolute control.

Doctor Doom Is Likely to Win

Avengers: Doomsday arrives on Dec. 18, 2026, with Avengers: Secret Wars scheduled to follow on Dec. 17, 2027. Both films are directed by Anthony and Joe Russo, creating a two-part structure similar to Infinity War and Endgame.

That makes a clean Avengers victory highly unlikely.

The most plausible ending is that the heroes finally unite but fail to prevent the destruction of their universes. Doom then rescues fragments of those realities and combines them into a single world under his control.

Comic readers would recognize that destination as Battleworld, but the film could reach it without directly copying one version of the Secret Wars storyline.

Different cities, nations and timelines might survive as disconnected territories. Avengers, mutants and Fantastic Four members could awaken with altered memories, separated from their teams and unaware that Doom rebuilt their existence.

Victor would appear to have saved everyone.

The price would be freedom, history and truth.

Robert Downey Jr.’s Face May Be Doom’s Final Weapon

Marvel has confirmed that Robert Downey Jr. is playing Victor von Doom, not Tony Stark. The studio has not established that this Doom is an Iron Man variant, and his exact connection to Tony remains unexplained.

Yet the casting itself will carry enormous emotional weight.

When Doom removes his mask, the Avengers may see the face of the man who sacrificed himself to defeat Thanos. Even if Victor has no biological connection to Tony, characters such as Thor, Steve, Bucky, Sam and Shuri could hesitate when confronted by that familiar face.

Doom may exploit that hesitation.

The cruelest version of the story would force the Avengers to fight someone who looks like their greatest fallen hero while hearing him argue that Tony Stark’s sacrifice accomplished nothing more than delaying the universe’s collapse.

Doomsday may therefore end where Infinity War once did: with the heroes defeated and reality transformed.

But this time, the enemy will not destroy half of life with a snap.

Doctor Doom may preserve nearly everyone—then demand that they worship him for deciding what their lives are allowed to become.