Changes in Marvel Cinematic Universe are inevitable, but Marvel does not want to move on specifically when it comes to "Iron Man 4" recasting. Despite Robert Downey Jr.'s current contract situation, Marvel President Kevin Feige cannot envision yet another actor portraying Tony Stark.

Many feared that Robert Downey Jr., due to his high pay, will be replaced by another actor for his iconic role as Tony Stark in the possible "Iron Man 4." But recently, Marvel president Feige may have debunked the recasting.

In an interview with Variety, Feige reveals that he can't "envision" anyone to play Tony Stark than RDJ. Additionally, they don't have to make any decision yet as for the "Iron Man" recast. He says, "Robert Downey Jr. is Iron Man."

But Feige has backpedaled a little bit, as he reckons that the new Spider-Man has been embraced well by the audience. So it is possible to have precedent for it. As per Feige, "And you can look to Sherlock Holmes, James Bond, and Batman as characters that last longer than any one actor playing them. There's a precedent for it in other franchises that suggests it's possible."

Marvel has been open to adding new characters of different cultures and ethnicities. In effect, many believe that new characters from the Comics will be pulled out to appear in MCU.

Comic Book noted that if when RDJ is done, a young black female actress can be cast as Riri Williams, "Iron Woman" or "Iron Heart" in the comics. And if Evans' exit will happen, there are lots of possible fill-ins as Captain America including Anthony Mackie's Falcon and Sebastian Stan's Bucky.

As for Riri Williams, Reading Eagle describes the character as a scientific genius who at 15 years old attended in MIT. When she builds a model of Stark's iron suit, he visits her with an offer. According to "Iron Man" writer Brian Michael Bendis, the inspiration for the "Iron Woman" is based on TV show that he developed but that never aired.

Release date for the future "Iron Man" franchise and Robert Downey Jr.'s reprising role are still unknown. Stay tuned for more "Iron Man 4" updates.