Emily Blunt may end up playing a villain in Jon Favreau's upcoming sequel "Iron Man 2."

No official deal has been announced, but according to Variety, Blunt is in the race for the role of Natasha Romanoff, a Soviet spy also known as Black Widow, a bad girl wearing a high-tech black costume.

Tony Stark (played by Robert Downey Jr.) will be busy fighting villains in the anticipated sequel to last year's awesome action flick "Iron Man."

Just last week, Mickey Rourke entered negotiations to play Crimson Dynamo, the tattooed Russian arms dealer who faces the superhero in a badass suit of armor.

Would Blunt make a good femme fatale? I think so. So far, I've liked her in pretty much everything I've seen of her, including "My Summer of Love," "Irresistible," "The Devil Wears Prade" and "Dan in Real Life."

Blunt will soon star alongside Amy Adams in "Sunshine Cleaning." She also stars in Joe Johnston's "The Wolf Man."

As for "Iron Man 2," Justin Theroux is still working on the script, but the film is expected to start shooting this spring. At this stage, the film is set for release May 7, 2010.