Fact Check: Is Cillian Murphy replacing Robert Downey Jr as Doctor Doom in 'Secret Wars'?

'Cillian Murphy will replace Robert Downey Jr as a more Evil Multiversal Variant of Doctor Doom,' a viral post claimed
Viral social media posts claim Cillian Murphy will replace Robert Downey Jr in the sixth installment of the 'Avengers' franchise and beyond (Getty Images)
Viral social media posts claim Cillian Murphy will replace Robert Downey Jr in the sixth installment of the 'Avengers' franchise and beyond (Getty Images)

LOS ANGELES, CALIFORNIA: Ahead of the release of ‘Avengers: Doomsday’, a claim began circulating on social media platforms that Robert Downey Jr, who plays Doctor Doom in the film, will be replaced by Cillian Murphy in ‘Avengers: Secret Wars’. The claim has sparked mixed reactions from fans and online users, requiring a fact-check.

Claim: Cillian Murphy is replacing Robert Downey Jr in 'Avengers: Secret Wars'

A viral X post claims Cillian Murphy will play Doctor Doom in the sixth installment of the 'Avengers' franchise and beyond (@BoinkBuzz/X)

According to the viral claim, the ‘Oppenheimer’ actor will replace Downey as Doctor Doom in the sixth installment of the 'Avengers' franchise.

A viral post that appeared on X (formerly Twitter) stated, “Cillian Murphy is reportedly confirmed to appear as Doctor Doom in 'AVENGERS: SECRET WARS'! Murphy will portray the main Earth-616 Victor von Doom, standing as the true, definitive antagonist who steps out of the shadows as the Multiverse Saga reaches its climax.”

Another post on the platform said, “Cillian Murphy will replace Robert Downey Jr as a more Evil Multiversal Variant of Doctor Doom in 'AVENGERS: SECRET WARS' & Beyond. The moment is planned as a big reveal at the very end of the Multiverse Saga.”

The claim drew conflicting reactions from fans, with many disagreeing with the claim while others appeared excited. Meanwhile, a few others remained skeptical and questioned its authenticity.

Fact Check: The claim was posted by a parody account

Cillian Murphy attends the 96th Annual Academy Awards on March 10, 2024, in Hollywood, California (Rodin Eckenroth/Getty Images)

The claim, however, is false, as there are no new updates about Murphy replacing Downey in the sixth installment of 'Avengers', which is set to release next year.

Although Murphy once emerged as a fan-suggested candidate to play the role, there are no new official announcements, statements, or social media posts from Marvel Studios or either of the actors about the replacement. 

If the claim were true, prominent news and entertainment media outlets would have widely covered it, making headlines. 

Additionally, the claim was posted from an X account called ‘Chaos Crave’ which describes itself in the bio as satire or parody.

Robert Downey Jr on returning as Doctor Doom

Robert Downey Jr speaks onstage during the Marvel Studios Panel in Hall H at SDCC in San Diego, California on July 27, 2024 (Jesse Grant/Getty Images for Disney)

Downey, who previously played Tony Stark or Iron Man in the MCU films, is returning as Doctor Doom in the upcoming fifth installment of the franchise. 

Reflecting on the role, Downey admitted, "It was really weird to be on the other side of the bad-guy mask because it’s such an isolated vibe. I’m seeing them all socializing and stuff, and I am the enemy." 

"When it comes to Tony and Doom, 'There’s the science thing, and they’re considered pretty brilliant guys,'" Downey said in an interview.


GET BREAKING U.S. NEWS & POLITICAL UPDATES
STRAIGHT TO YOUR INBOX.

MORE STORIES

A viral post on X claimed that Donald Trump believes the White House can function without a press secretary and is in no hurry to appoint a replacement
2026-10-17T08:21:18.000Z
A viral post claims Caitlyn Jenner made the announcement, saying, 'I’m tired of pretending I have a period every month'
2026-10-17T07:28:33.000Z
The claim surfaced after Katie Zacharia’s abrupt departure as press secretary, just days after her shaky briefing debut
2026-10-17T07:13:37.000Z
The rumor gained traction after an X user shared a message allegedly received from a friend who had completed poll worker training
2026-10-17T05:32:21.000Z
While some criticized Trump over the alleged statement and accused him of hypocrisy, others questioned its authenticity and called for a fact-check
2026-10-17T03:55:59.000Z
A viral social media post claimed Tom Holland filed a restraining order against Robert Pattinson to keep him away from Zendaya
2026-10-17T03:42:26.000Z
The footage sparked speculation on X about why Trump walked past the limousine and whether security agents had to direct him back toward it
2026-10-17T03:02:28.000Z
A Reddit post shows that the claim began circulating in 2025
2026-10-17T02:04:22.000Z
Viral posts claim that Ilhan Omar fled to Morocco, which does not have a bilateral extradition treaty with the US
2026-10-17T02:03:11.000Z
A post claimed that Mike Pence was being investigated for allegedly leaking sensitive national security information from Trump’s first administration
2026-10-16T08:43:44.000Z