5 theories on how Robert Downey Jr can return as Doctor Doom: From Iron Man variant to evil Tony Stark

5 theories on how Robert Downey Jr can return as Doctor Doom: From Iron Man variant to evil Tony Stark
Robert Downey Jr unmasks himself as Doctor Doom at Comic-Con San Diego (Getty Images)

Robert Downey Jr returns as Doctor Doom: 5 intriguing theories about star's MCU comeback

(Getty Images)
Robert Downey Jr is set to return as Doctor Doom in MCU (Getty Images)

Fans of the Marvel Cinematic Universe were in for a shock at the latest Comic-Con in San Diego when the masked Doctor Doom took off his disguise to show himself as Robert Downey Jr, marking the actor's much-awaited comeback to the series. This unexpected turn of events left viewers both thrilled and puzzled, particularly given that Downey Jr's famous role as Tony Stark had died in 'Avengers: Endgame'. The main question on everyone's lips now is how Downey Jr will rejoin the MCU and take on the role of Doctor Doom. Marvel Studios, renowned for their complex and meticulously designed narratives, seem to have a well-thought-out strategy. Downey Jr's comeback is a major shift, as he transitions from portraying the adored Marvel hero to possibly becoming the show's most formidable antagonist. At Comic-Con, Downey Jr shared with the crowd, "What can I say? I enjoy playing complex characters." Let's delve into five leading theories regarding Robert Downey Jr.'s return as Doctor Doom.

1. Evil Tony Stark from another universe

SAN DIEGO, CA - JULY 14:  Actor Robert Downey Jr. speaks at Marvel Studios
Robert Downey Jr could return as an evil Tony Stark from an alternate universe (Getty Images)

The concept of the multiverse offers a wealth of possibilities for the reinvention of characters. One of the simplest theories is that Robert Downey Jr could return as the evil Tony Stark from an alternate universe. In this scenario, Stark's alternate self, plagued by different life choices and mistakes, becomes Doctor Doom instead of Iron Man. For example, he may have been driven insane after failing to stop Thanos in Avengers: Infinity War or he may have never fallen in love, leading him down a darker path. This theory has its roots in the comics, specifically 'Marvel Team-Up' (2004) by Robert Kirkman, known for his work on 'The Walking Dead' and 'Invincible'. In this story, Tony Stark becomes Doctor Doom in an alternate universe after an alien named Titannus wipes out most of the Avengers. Consumed with rage at Reed Richards for failing to prevent the catastrophe, this Stark variant dons Doom's armor and sets out to destroy the Fantastic Four of all universes.

2. Doctor Doom takes up Iron Man's mantle after Tony Stark's death

Actor Robert Downey Jr. arrives at the world premiere of Paramount Pictures and Marvel Entertainment's
Robert Downey Jr's Doctor Doom could take up the mantle of Iron Man after Tony Stark's death (Getty Images)

Another intriguing theory comes from 'Infamous Iron Man' (2016), a comic series by Brian Michael Bendis, the creator of Miles Morales. In this story, Doctor Doom takes on the mantle of Iron Man after the death of Tony Stark. The comic shows Doom attempting to reform himself by donning a new Iron Man suit that mirrors his Doom armor as he struggles to become a force for good. This theory presents an interesting challenge for the MCU. While it establishes a connection between Stark and Doom, it doesn't explain how Downey Jr would portray this new version of Iron Man. In 'Infamous Iron Man,' Doom's physical appearance differs from Stark's, which complicates the idea that Downey Jr could play both roles. However, Marvel's ability to adapt and reinvent characters means that this storyline could still serve as inspiration for a unique twist in the MCU.

3. Iron Man and Kang's multiverse connection

HOLLYWOOD, CA - JUNE 28:  Robert Downey Jr. attends the premiere of Columbia Pictures'
A complex theory suggests a connection between Iron Man, played by Robert Downey Jr and Kang the Conqueror (Getty Images)

A more complex theory involves a connection between Iron Man and Kang the Conqueror. In 'Young Avengers' (2005), written by Allan Heinberg, a variant of Kang dons the armor of Iron Man and becomes a character known as Iron Lad. This theory suggests that Marvel could be using this storyline to ease the transition from Jonathan Majors, who played Kang, to Robert Downey Jr as Doctor Doom. Iron Lad is a young hero from the future, a teenage version of Kang, who travels back in time to avoid becoming a villain. He finds the Young Avengers and wears a suit similar to Iron Man's armor. However, the character's history is complicated and doesn't directly explain why he would look like Tony Stark. While intriguing, this theory requires significant narrative gymnastics to fit into the current trajectory of the MCU, especially considering the complications surrounding Majors' real-life legal troubles and his subsequent dismissal from the franchise.

4. Doctor Doom turns out to be a completely new person

Robert Downey Jr. attends 60th New York Film Festival -
Marvel could introduce a new character who just happens to look like Tony Stark (Getty Images)

While it's not the most creative solution, it's possible that Marvel could introduce a new character who just happens to look like Tony Stark. This approach would undoubtedly be the simplest narrative route, but might not satisfy fans craving a more complex and meaningful explanation for Downey Jr.'s return. Given the MCU's penchant for complex stories, this theory seems less likely, but it can't be ruled out entirely. By the time we reach 'Avengers: Doomsday' on May 1, 2026, fans will be hoping that Marvel delivers a more satisfying and well-thought-out reveal.

5. 'Anchor being' gone wrong

WESTWOOD, CALIFORNIA - JANUARY 11:  Robert Downey Jr. attends the premiere of Universal Pictures'
A popular online theory suggests Robert Downey Jr's return will involve the concept of an 'anchor being' (Getty Images)

The most popular theory circulating on the internet is that the return of Robert Downey Jr will involve the concept of an 'anchor being.' This theory was most notably expanded upon by Twitter user Aaron S Bailey, who speculated, "It's revealed that Tony was the 'anchor being' of the Sacred Timeline." According to this theory, the 616 universe is deteriorating due to the absence of its anchor, Tony Stark. To fix this, the Avengers could bring a Stark variant from another universe into their own, only to realize it's Doctor Doom. This theory fits with the current MCU storyline, which has explored the concept of the multiverse extensively in films like 'Doctor Strange in the Multiverse of Madness' and the recently released 'Deadpool and Wolverine.' This allows Marvel to introduce a new version of Stark without negating Downey Jr's original portrayal of the character, maintaining the emotional impact of his sacrifice while offering a new take on his return.

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