During a recent appearance on Jimmy Kimmel Live!, Favreau opened up about his intense reaction upon learning of Tony Stark's fate in Endgame. "I called [Avengers: Endgame directors Joe and Anthony] the Russos. I was like, ‘I don’t know about — I don’t think people — I don’t know if people are going to like — I don’t know! I think it’s going to really impact people because there they were kids that grew up with that character.'"