Somewhere in the multiverse,Robert Downey Jr.is playing the villain.
I think he had come through on maybeFantastic Four, so everybody sort of knew who he was.
Once it was him, thats when my life got a lot easier, added Favreau.

Robert Downey Jr. as Iron ManEverett
Because he the voice of the character.
And then one by one, people were just signing on board because now it became something interesting.
Feige credited Favreau and Downey Jr.s behind-the-scenes dynamic with much of the MCUs success.

Julian McMahon inFantastic Four(2005). (20th Century Fox Film Corp.)
And I would say to Robert, We wouldnt be in this mess if it wasnt for you.
Meaning, we wouldnt have a studio if it wasnt for him.
We are going to keep that moment and not touch that moment again, Feige toldVanity Fair.