Julian McMahon touched upon Robert Downey Jr.'s casting as Doctor Doom. This comes after Miles Teller shared his hope that The Fantastic Four: First Steps doesn't "bomb" in theaters. McMahon brought this subject up in an interview with Screen Rant,

At the 2024 San Diego Comic-Con, Marvel Studios president Kevin Feige shocked fans by revealing Downey would return to the MCU as one of Marvel's favorite villains instead of reprising his role as Iron Man. Downey is set to play Doom in the next two Avengers movies, titled Avengers: Doomsday and Avengers: Secret Wars.

Robert Downey Jr. is digging deep into his research to play Doctor Doom in the MCu, according to the Russo Brothers.

Julian McMahon, who portrayed Victor Von Doom / Doctor Doom in 2005’s Fantastic Four and its 2007 sequel, Fantastic Four: Rise of the Silver Surfer, has given a big thumbs up to the casting of Robert Downey Jr.

Robert Downey Jr. is set to return to the Marvel Cinematic Universe (MCU), this time as the iconic villain Doctor Doom. This unexpected casting marks a major change in Downey’s MCU journey, as he previously played the beloved superhero Iron Man for over a decade.

Doomsday co-director Anthony Russo speaks about Robert Downey Jr.'s dedication to playing Doctor Doom, revealing that the actor is very hand-on when it comes to the character.

There are still two big Marvel Cinematic Universe movies on the 2025 movie schedule but many fans are already turning their attention to 2026 and the upcoming Avengers: Doomsday, the movie that features the return of Robert Downey Jr.

Julian McMahon, the Doctor Doom actor from the 2000s Fantastic Four movies, has revealed his excitement over Robert Downey Jr.'s take on the role in Avengers: Doomsday and Avengers: Secret Wars. "It's Robert,