Robert Downey Jr. in Iron Man 3
Robert Downey Jr. in Iron Man 3Marvel

Robert Downey Jr. is kicked about reprising his iconic role as Tony Stark/ Iron Man in the upcoming Avengers: Age of Ultron but post that, his future as the beloved superhero is uncertain.

If rumours circulating on the internet are to be believed, Downey Jr. might not return for a fourth instalment of the blockbuster Iron Man franchise, assuming the execs at Marvel Studio are serious about another film in the series, reports Enstars.

On Tuesday, The Edge had an interview with the original Iron Man, Downey Jr., who discussed how it would work for audiences if more Marvel movies were to be made.

According to the actor, it is highly likely that the makers will want to go ahead with someone younger if Iron Man 4 becomes official.

"The smart money is you have to look at everybody's age," Downey, Jr. said. "I'll put myself at the top of the list. Sooner or later, they've got to start over and get somebody young. I'm not there with them yet."

The actor also stated that a younger actor who could relate to a younger audience would be a better choice.

"It really is the closest thing to being a beloved contract player with a big old-timey studio that there is right now," Downey, Jr. said.

"When you really think about it at the end of the day, these films are entertainment largely driven by young folks. There is something very honourable about that."

Talking about Avengers: Age of Ultron and how that will definitely be a film to look forward to, the Iron Man star said:

"This one is a very ambitious sequel. If you read it, it's dense, it's smart. Joss [Whedon] is a really smart guy."