Robert Downey Jr. Makes a Surprising Return to the MCU as Doctor Doom!

A New Chapter for Robert Downey Jr. in the MCU

Robert Downey Jr. is making a comeback to the Marvel Cinematic Universe, but this time he won't be donning the Iron Man suit. Instead, he will take on the role of Victor von Doom, famously known as Doctor Doom, in the upcoming Multiverse Saga. The announcement by Kevin Feige caught many off guard, especially since fans had bid an emotional farewell to Tony Stark and RDJ in Avengers: Endgame. However, not all Marvel veterans were satisfied with the character's on-screen demise. Jon Favreau, who played a pivotal role in casting RDJ as Iron Man and directed the original film in 2008, was particularly opposed to this decision.

Jon Favreau's Influence in the MCU

Jon Favreau's Role in Casting Robert Downey Jr.

Jon Favreau is a key figure in the Marvel Cinematic Universe, known for his portrayal of Harold "Happy" Hogan, Tony Stark's loyal bodyguard and friend.

Favreau's Opposition to Iron Man's Demise

Why Jon Favreau Disagreed with Iron Man's Death

During a guest appearance on Jimmy Kimmel Live, Favreau shared his reservations about Iron Man's death during the early stages of planning for Endgame. He even cautioned directors Joe and Anthony Russo about the potential backlash from fans regarding the loss of such a cherished character. "I told the Russos, I’m not sure how audiences will react... it’s going to have a significant impact because many grew up with that character," Favreau explained while promoting his upcoming Star Wars project, The Mandalorian and Grogu.

Despite his initial concerns, Favreau later recognized the significance of the plot twist and praised the Russos for their storytelling. He admitted, "It was executed beautifully by them. Gwyneth [Paltrow] and Robert [Downey Jr.] delivered outstanding performances, adding depth to the moment. I was moved! Even though it’s a film, those characters have been integral to my life for so long," he reflected.

Marvel Prepares for Avengers: Doomsday

Marvel's Upcoming Release: Avengers: Doomsday

Marvel is gearing up for the release of its next blockbuster, Avengers: Doomsday. Recently, Disney unveiled exclusive footage at CinemaCon 2026, showcasing characters like Doctor Doom, Steve Rogers, and Thor. This film will merge the Avengers with the X-Men, the Fantastic Four, and the Thunderbolts, and is scheduled for a worldwide theatrical release on December 18, 2026.