Olivia Munn: I had to reshoot scenes for Iron Man 2
The film, which was originally due to be released at the end of April, also stars Robert Downey Jr, Scarlett Johansson, Paul Bettany, Samuel L. Jackson, Mickey Rourke and Gwyneth Paltrow.
Munn told Complex that her original takes were cut from the film, adding that she has since reshot clips as a different character.
"They just gave me another role in the film. I had to reshoot all of my scenes," she said.
She continued: "As they started to edit they realised it was becoming darker than what they'd expected and what my scenes had allowed for. My [original] parts were lighthearted and comedic."
Munn, who will next be seen in Freeloaders, is best known for her TV work and has presented shows such as Attack of the Show! and starred in Beyond the Break.