Joe and Anthony Russo started the Best Actor talk in regard to Robert Downey Jr. pretty much right after Avengers: Endgame hit theaters.
“We, the undersigned, were so moved by Mr. Robert Downey Jr.’s performance as Tony Stark in Avengers: Endgame that we believe he is unquestionably deserving of the Academy’s Award for Best Actor.
Robert Downey Jr. decided early on that Avengers: Endgame was going to be his last time playing Tony Stark on the big screen, other than some possible cameos.
In addition to the aforementioned awards for Avengers: Endgame, Disney is also going for Best Production Design, Best Costume Design, Best Sound Mixing, Best Sound Editing, and Best Visual Effects.