Stewart joined other cast and crew Saturday at the Comic-Con fan convention for a preview of next year's "Snow White and the Huntsman," an action packed twist on the fairy tale.
The "Twilight" star told a Comic Con crowd that doing a sweet, traditional Snow White was not something "I was jumping at." What attracted her was that this Snow White was a bold leader with her feet firmly on the ground.
"Also, I get to have a sword and stuff," Stewart said. "Really cool weapons."
The movie is due out next June and is one of two "Snow White" movies Hollywood has coming. The other, due out next March, features Julia Roberts as the evil queen.
The cast of Stewart's "Snow White" includes Charlize Theron as the wicked queen, Chris Hemsworth as a rugged huntsman and Sam Claflin as a prince.
The movie starts shooting in a few weeks. Director Rupert Sanders showed off photos of the stars in costume, among them Stewart in her fighting outfit and Theron in a sleek black gown with savagely high and sharp collars.
How evil is Theron's queen?
"She's a serial killer," Theron said. "I'm pretty much preparing to play a serial killer."
Sanders also showed a photo of the dwarves that accompany Snow White in this version, all standing in a row looking scruffier than a gang in a police lineup. The actors playing them include Ian McShane, Bob Hoskins, Ray Winstone, Nick Frost and Toby Jones.
There are eight dwarves rather than the usual seven. Sanders said "there are eight because there are a few great lines when one of them gets killed."