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Robert Downey Jr. is going to return to the folds of the Marvel Cinematic Universe not as Iron Man but as the big bad baddie Doctor Doom inAvengers: Doomsday.

robert downey jr. iron man

Replacing Jonathan Majors’ Kang the Conqueror, the world was shocked when RDJ announced his return to the MCU. However, the question remains how will the MCU simply erase Kang from its history books?

How Robert Downey Jr.’s Doctor Doom Will Replace Kang The Conqueror

As soon as Downey Jr. made the announcement at the San Diego Comic-Con 2024 that he would be Doctor Doom in the MCU, there were countless theories about how Robert Downey Jr. would slowly take over the MCU.

From a random reference inLokitothe Illuminati massacre inDoctor Strange in the Multiverse of Madness, the theories are endless. But very few people have talked about how they will eventually remove Kang from the Marvel Cinematic Universe.

kang

Even If It’s Hard to Believe, Paul Rudd’s Ant-Man Alone Can Beat Robert Downey Jr’s Doctor Doom

A fan took to Reddit to talk about one such wild theory about how it was actually Kang who saw the introduction of Doctor Doom in the multiverse. In season 1 ofLoki,Majors had an iconic monologue.

Portraying the role of He Who Remains, the character talks about the multiversal war that his variants are fighting, and according to He Who Remains, he has“seen how it ends”.

Even If It’s Hard to Believe, Paul Rudd’s Ant-Man Alone Can Beat Robert Downey Jr’s Doctor Doom

“Since when did the story get this dark”: Robert Downey Jr. Better Not Do This to Pedro Pascal’s Mr Fantastic After His MCU Return as Doctor Doom

Well, this bold theory asks the question what if He Who Remains saw the aftermath of Doctor Doom ruling over the MCU on Battleworld? What if Kang created the Sacred Timeline because he knew that Doctor Doom would soon be upon their multiverse with an incursion and wanted to protect it?

It Doesn’t Stop Here

The theory further delves into the concept of consequences as the fan suggests that Doctor Doom was the repercussion of Kang and his variants messing with the universe’s timeline.

The theory goes one step further and takes a dive into theFantastic Fourand how they are not based on Earth-616 right now (our planet). The theory claims that the team of Fantastic Four will travel to Earth-616 at the end of their film since their universe collapses.

“Since when did the story get this dark”: Robert Downey Jr. Better Not Do This to Pedro Pascal’s Mr Fantastic After His MCU Return as Doctor Doom

“You’re not the only one cursed with knowledge”: Robert Downey Jr.‘s Doctor Doom Casting Hints Thanos Knew What Was Coming Next for Iron Man in the Future

For that, one might need a multiversal engine core which maybe Reed Richards or Doctor Doom might have been experimenting with. Although there are some speculations and rumors, the theory does seem pretty interesting.

WithRobert Downey Jr.portraying the role of Doctor Doom in the MCU,Avengers: Doomsdayis set for a release date of 28 July 2025 in theaters across the world.

John Krasinski

Visarg Acharya

Senior Writer

Articles Published :3264

Visarg Acharya is a Senior Writer at FandomWire, majorly focusing on movies, with over 3000 articles published. He has been an entertainment journalist for the past three years and a copywriter at a corporation. Visarg usually covers news and theories on the MCU and the DCU, with an emphasis on Avengers and Superman; Game of Thrones, and more.A Tarantino fan, Visarg, spends his time critiquing various directors’ filmographies and watching them with curiosity. Medieval fantasy like The Lord of the Rings or sci-fi movies like Interstellar, watching the latest horror movies, and listening to Hans Zimmer become his comfort zone. When idle, he can be found reading fantasy novels with a terrible cup of coffee in hand.

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Jonathan MajorsRobert Downey Jr.