“The main thing to me is, and this is where I think the Russos are quite brilliant and where Kevin backed the play, is what sort of incident could occur and what sort of framework could we find Tony in? The clues are in “Ultron” about where we might find (Tony) next. But what would it take for Tony to completely turn around everything he’s stood for, quote-unquote, because he was the right-wing guy who could still do his own thing….There’s always the bigger overarching question, that Joss brings up all the time – it’s kind of weird that these guys would have all these throw downs all over planet Earth and it looked like a little collateral damage happened over there, and yet when the movie's over, it’s like nobody minds. You have to figure, ‘Were you to ask the question, what would the American government do if this were real? Wouldn’t it be interesting to see Tony doing something you wouldn’t imagine?’”
When asked if Tony would be the “bad guy” of the film, Downey replied...
“I wouldn’t put it that way. Ultimately it’s Steve’s story; it doesn’t say ‘Iron Man 4: Civil War’. I think that’s great too. I think Chris [Evans] has been hungry to bring even more of an underside and some shadow to that. I remember the comics – on the surface you got the sense that Cap was baseball and apple pie, but underneath there was all this churning stuff of being a man out of time. Now we know he’s made his peace with that. What’s the bigger issue? It can have a little something to do with the past, but it can be about someone becoming more modernized in their own conflict.”