• Executive producer Susan Downey and actor Robert Downey Jr. arrive at the world premiere of Paramount Pictures and Marvel Entertainment's 'Iron Man 2' held at El Capitan Theatre on April 26, 2010 in Hollywood, California.

Executive producer Susan Downey and actor Robert Downey Jr. arrive at the world premiere of Paramount Pictures and Marvel Entertainment's 'Iron Man 2' held at El Capitan Theatre on April 26, 2010 in Hollywood, California. (Photo : Getty Images/ Kevin Winter)

There's still a lot of uncertainty regarding "Iron Man 4," particularly with respect to Robert Downey Jr.'s involvement in the film. So far, Marvel has not announced any news about the development of the film, but fans are hopeful that Downey will still suit up as titular superhero.

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Downey brought Tony Stark/Iron Man to life in the big screen since day one. Ever since, viewers have associated Downey to the character and vice versa, and it would be difficult for many to picture another actor taking on the role of Tony Stark.

In an interview, "Iron Man" producer Jon Favreau said that Downey fits Iron Man in "all the good and bad ways," and that the story of the superhero somewhat reflects the story of the actor's career. Moreover, he said that he can't imagine anyone else playing the role.

"I can't imagine how they could but that doesn't mean that they can't. I just can't wrap my head around that one," Favreau told IGN. "To me he's the one element that has unified all of it, and I think kept a consistent tone, and the integrity of his acting ability and his talent really works wonderfully synergistically with the Marvel universe."

Downey has completed the "Iron Man" trilogy and is now focusing on the remaining "Avengers" films. However, when asked if he's still interested in doing another solo "Iron Man" movie, Downey said that he feels like he could still do one more.

However, with or without Downey, Marvel president Kevin Feige said that recasting the role is not out of the table for future movies. "I think most of these characters that are iconic, like (James) Bond, like Batman, like Spider-Man, like Iron Man, someday will be portrayed by different actors. The good news right now is I don't have to think about that for a long time," Comicbook quoted Feige as saying.

The same statement was made with respect to Chris Evans' Steve Rogers. When asked if "Captain America" can move forward without Steve at the center of the story, Feige said it's possible if we were to consider the events in the comics, where the Captain America mantle was succeeded by Bucky and Falcon.

What are your thoughts on having a different Iron Man?