Olivia Munn is featured on the cover of "Complex" magazine's April/May issue (see the cover, gallery & article) and she talks about how she got a completely new role in Iron Man 2. Here's an excerpt from the interview:
You're in two gigantic movies this year. Let's talk about Iron Man 2 first because it's f*cking Iron Man 2.
Olivia Munn: Actually, they just gave me another role in the film. I had to reshoot all of my scenes.
Wait, didn't they start filming like last year or something?
Olivia Munn: Yeah, but as they started to edit they realized it was becoming darker than what they'd expected and what my scenes had allowed for. My parts were lighthearted and comedic.
Olivia Munn: Jon Favreau called and was like, "I've got good news and bad news: This is what's happening in editing but we all really like you." Marvel and Jon had to add another character from the Marvel universe to keep me included.
I need details! Tell us anything about the old or new role.
Olivia Munn: I can't talk specifics because it's Iron Man 2! But when they call, you say, "OK, I'm there. What do you need?" You don't say, "Who is this Marvel? Did you call my agent? Is FIJI Water on set?" Everyone knows who the stars are in this movie. I'm not one of them and I understand the editing process. Some things don't work out.
What if you'd stayed on the cutting room floor?
Olivia Munn: I would've started crying.