At Comic-Con in San Diego, Calif. Saturday, producers unveilved the images of Kristen Stewart, Charlize Theron, Chris Hemsworth and Sam Clfalin in the new movie "Snow White and the Huntsman."

While there, Stewart, 21, and Theron, 35, continued with their onscreen rivarly during the panel, US Magazine reported.

"She's going to give me a run for my money," Theron told fans.

"And I'm ready for it!" Stewart playfully added. "Let's go!"

Donning silver armor, weilding a sword and carrying a shield, Stewart looks diametrically opposite her Twilight character.

Theron, who plays the Evil Queen, promised the film isn't your classic fairytale. "Trust me, she's dark. I'm preparing to play a serial killer," the South African actress said. "Watch out, Kristen."

Hemsworth, 27, plays the Huntsman; Claflin, 25, plays Prince Charmant. Snow White and the Huntsman begins filming in August; it's slated to premiere in 2012.