Marvel Studios rocked the internet when it revealed at San Diego Comic-Con that Doctor Doom would be the new villain of the fifth and sixth Avengers films, which Anthony and Joe Russo will direct. If that wasn’t surprising enough, they also revealed that Robert Downey Jr., who had long portrayed the hero Tony Stark/Iron Man in the Marvel Cinematic Universe, would return to play the iconic villain.
This news has many enormous implications for the MCU, with Avengers: The Kang Dynasty being rebranded as Avengers: Doomsday. While Marvel fans hold their breath in anticipation of this blockbuster event, let’s look at what could happen in the next Avengers film.
Doom will be a Tony Stark variant
Robert Downey Jr. / Instagram
Since Doom hails from Earth-828 from The Fantastic Four: First Steps, it stands to reason that Robert Downey Jr.’s villain will be an evil version of his previous character, Tony Stark. Thus, it is likely Doom’s tech will be a different version of the Iron Man armor, blending science and sorcery to create a truly terrifying foe.
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Doom took up the mantle of Iron Man when he tried to reform in the comics, donning a similar suit of armor with his trademark green cloak. The villain’s infamous Doombots may even be variants of Stark’s Iron Legion or the subsequent robot sentries created by Ultron in Avengers: Age of Ultron.
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Doom destroys the Multiverse
Marvel Comics / Marvel Comics
In the most recent Secret Wars comic storyline, readers witnessed Doom inadvertently destroy the entire Multiverse in a series of Incursions set off by the Molecule Man’s death in each reality. In a last-ditch effort to save the Multiverse, the masked villain steals the power of the Beyonders with the help of Molecule Man to reshape the remains of existence into a singular realm known as Battleworld, where various characters from the Marvel Universe worship Doom as their God Emperor.
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Doom kills Kang (all of them)
Marvel Studios / Marvel Studios
It’s no secret that Marvel Studios dropped the ball with Kang the Conqueror. Though the time-traveling tyrant was primed to become the MCU’s next big bad, the less-than-favorable reception of Ant-Man and the Wasp: Quantumania, Jonathan Majors’ legal troubles, and his subsequent firing have caused the studio to rethink its plans for the Multiverse Saga.
One critical remnant of their initial plans that needs to be addressed is the Council of Kangs, who appeared after the death of the “Exiled One” in Quantumania, setting the stage for a future war on the Avengers.
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Since Doom will take Kang’s place as the franchise’s overarching antagonist, how terrifying would it be for Doom to start his rampage by eradicating all the other Kangs? Such a twist will eliminate this hanging plot thread and establish Doom as a genuine threat to the Multiverse.
However, Doomsday could reveal that Doom was actually trying to save the Multiverse from the Council of Kangs, similar to how the villain tried to stop the Beyonders from destroying the Multiverse in 2015’s Secret Wars comic. This could give the Kangs a sizable role in the film that would make for a natural shift to Doom as the franchise’s true antagonist.
Doom assembles the Cabal
Marvel Comics / Marvel Comics
Just as Thanos had his Black Order, Doom could have the Cabal supporting him in his quest. In the comics, the Cabal is a secret order of villains and antiheroes who aided each other as a dark reflection of the Illuminati.
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Doctor Strange sides with Doom
Marvel Studios / Marvel Studios
In 2015’s Secret Wars comic, Doctor Strange was right next to Doom when he destroyed and recreated the Multiverse. However, the sorcerer chose to become Doom’s right hand to help protect what was left of the Multiverse. This uneasy alliance could be adapted in Avengers: Doomsday as Strange comes face-to-face with him for the first time.
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Doom will steal people’s powers
Disney+ / Disney+
Since Marvel seems to be adapting the 2015 Secret Wars comic series, it is likely that Doom will try to steal the power of some all-powerful being like the Beyonder to reshape the Multiverse after its destruction and become “God Emperor Doom.” The mid-credits scene for The Fantastic Four: First Steps showed Doom approach the all-powerful Franklin Richards, implying he will kidnap the child to enact his plan.
(function(){if(document.currentScript){var e=document.currentScript.parentNode;if(e.classList.contains(‘dtads-location’)){if(!e.classList.contains(‘dtads-‘+window.DTScenario.getExperience())){e.parentNode.removeChild(e)}}}}());However, Doom could also steal the power of several other reality-shaping beings from across the Multiverse, akin to how Thanos gathered the Infinity Stones. Possible targets for Doom include the Scarlet Witch, who may or may not have met her death at the end of Doctor Strange in the Multiverse of Madness. If she is indeed targeted by Doom for her incredible Chaos Magic, she could end up fulfilling the prophecy uttered by Wong of how she will “either rule or annihilate the cosmos.”
Another possible target of Doom would be Loki, the God of Stories. Disney+’s Loki saw a variant of the titular character go from the God of Mischief to the guardian of all realities, gaining the ability to control time and restructuring the Sacred Timeline into an entire Multiverse. Doom could steal such immense power from Loki in his plan to destroy the Multiverse and recreate it in his image.
The Young Avengers will appear
Marvel Comics / Marvel Comics
Since Doom and Scarlet Witch may cross paths in Avengers: Doomsday, it seems likely that the MCU will adapt a storyline involving them and the Young Avengers called “The Children’s Crusade.” This story sees the young heroes, who include Wanda’s sons Wiccan and Speed, find an amnesiac Wanda married to Doom and the villain stealing her power.
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Tony Stark will be revealed as the MCU’s Anchor Being
Marvel Studios
In Deadpool & Wolverine, Fox’s Wolverine was revealed as his universe’s Anchor Being as a meta-commentary on how the character was central to the franchise’s success until his death in Logan. The same could be said for Downey Jr.’s Iron Man, who helped make the MCU the success it is today.
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A time-traveling Captain America returns
Marvel Studios / Marvel Studios
In Avengers: Endgame, after returning the Infinity Stones to their points of origin, Captain America traveled back in time to grow old with his true love, Peggy Carter. However, what happened while he was gone was never revealed on-screen, as he had chosen to keep it a secret from Sam and Bucky.
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Spider-Man faces Doom
Sony / Sony
Tony Stark became somewhat of a father figure to the young Peter Parker during his first years in the MCU. Following Stark’s traumatic death in Avengers: Endgame, it would be quite a shock for Peter to have to fight a villain who looks exactly like him. Given that Tom Holland’s webslinger is getting a fourth film in the MCU, Spider-Man seems ready to swing into action in the next two Avengers films.
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The Avengers team up with Thanos
Marvel Studios / Marvel Studios
Since Doom is being presented as the next threat to the entire Multiverse, Earth’s Mightiest Heroes will need all the help they can get to stop him. So what a twist it would be if the Avengers were forced to team up with one of their greatest adversaries: Thanos.
(function(){if(document.currentScript){var e=document.currentScript.parentNode;if(e.classList.contains(‘dtads-location’)){if(!e.classList.contains(‘dtads-‘+window.DTScenario.getExperience())){e.parentNode.removeChild(e)}}}}());Though the evil Titan was killed in Endgame, the Multiverse opens the door for another variant of him to appear in the future. Since the Multiverse seems to be on a collision course with itself, it would be no surprise if one of these timelines has a Thanos willing to help defeat Doom. This could carry on into the sequel, allowing the filmmakers to adapt Doom and Thanos’s shocking battle from the 2015 Secret Wars comic.
Avengers: Doomsday opens in theaters on December 18, 2026.