Actor/screenwriter Justin Theroux has been a busy man lately. Alongside Ben Stiller, he co-wrote the script of last summer’s comedy hit Tropic Thunder, and he’s been tapped to write the screenplay for Iron Man 2. He recently spoke to UGO about the first draft of his Iron Man 2 script, and gave his thoughts on the James “Rhodey” Rhodes switcheroo from Terrence Howard to Don Cheadle.

More of the interview when you continue..

Below, Theroux gave some answers to some important questions surrounding the production of Marvel’s next couple of films. On the status of his script for Iron Man 2, here’s what he had to say.

We’ve kind of got a first draft around.  You know what I mean?  I just got back from London where I was working with Robert and Kevin Feige.  He was out there.  We were talking with Robert, who’s out there doing Sherlock Holmes, he was giving his input and his notes.  We’re sort of there.  It’s just sort of chugging along.  The crews, I think, are now starting to see what they need to make, and the places that we might be going and all the rest within the story.  That’s sort of one of the more exciting times.

When asked about whether or not he was involved with Terrence Howard’s replacement by Don Cheadle he clearly states, “No, I wasn’t. I genuinely wasn’t (laughs).”

Whatever their reason is, I’ll leave that up to Marvel.  We’re writing the thing, virtually the same for Rhodey that we would for any actor.  We’re really taking what’s going to be the most interesting story for the fans, and what are they going to enjoy watching.  And who ever’s in that part is going to have to play that part and make it work for Jon (Favreau) and the fans who are watching the movie.

Theroux doesn’t seem to be too worried about writing for Cheadle. He hasn’t met the actor yet, but said he will soon.

….I think once I get a better sense of his voice and also hear what he has to say about what he likes about the character and just pick his brain a little bit, then we’ll obviously start to tailor it to him.  Once he sort of gets more involved in the process then we’ll start tapering the length of his character…making it fit just right.

And finally, he gave his thoughts on The Avengers collaboration movie.

…they haven’t given us any instruction as far as we want you to do this or we want you to do that.  And really it’s not really a they/us kind of environment, the way they work.  It’s just a bunch of guys and girls sitting in a room, trying to come up with stuff and doing what’s right for the movie and what, at the end of the day, is going to be the most interesting film that can be made.  Kind of a fun film.  I think once we’re sort of locked on that we’ll be able to think about how we can thread things through.  There’s a couple little things that we’ve been working on, but it’s not that we’ve been taking meetings with Avengers people.  It’s not like we’re six screenwriters sitting in a room from each movie and thinking about how we’re gonna work on each other’s things.

Hmm, I’m interested to hear more about the script for Iron Man 2, including who the villain will be, and whether or not War Machine will make an appearance. My expectations for The Avengers is still up in the air. It’s a Marvel “team up” movie, that will be led by whom exactly? I can’t put in my two cents until I find out who Captain America is, and whether or not Edward Norton will return as the Hulk. Also, will there be a female superhero character in the midst of all these men? Will Wasp make an appearance? What are your theories on Marvel’s future films?