Jon Favreau has admitted that he is glad to working with Robert Downey Jr once again.
The director is back with Iron Man 2 this week, which sees Downey Jr return to the role of Tony Star, two years after the huge success of the first movie.
And the director has revealed that Downey Jr is a very hands on actor who gents involved with many aspects of the project.
In an interview with Collider the director said: "Yeah, he’s really a full partner creatively. He’s been involved in all the writing sessions and breaking story. He was very involved last time around, we would do a lot of writing actually on the set, or the day before and make adjustments.
"He has a very, very clear sense of story and a clear sense of character. And most importantly, he knows what he needs to score.
"So if nothing else, he knows what clubs need to be in his bag, you know, and part of my job as a director is when you have a guy as talented as he is to just give him what he thinks he needs to get it done.
"Of course there is really not a bad take in the guy and it’s a matter of knowing how to conjure up what he does well. He brings humour, spontaneity, something unpredictable and an emotional grounding to the character.
"And I think that that... he above all things is what made the first film unique. And I think our combination of how we work together and support each other’s weaknesses is what made the film have the personality that it did.
"And I’m really glad to be working with him again. If the film didn’t have him, it wouldn’t just be a different cast member, it would be truly, you know, one of the creative pillars of the process."
Iron Man 2 is released 30th April.
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