Mila Kunis, Michelle Williams Tease Their Good And Evil Witchery In 'Oz'

Thanks to the big reveal of the trailer for "Oz: The Great and Powerful" during its panel at Comic-Con, we now know a little bit more about Sam Raimi's highly anticipated, secretive prequel. But it's not all about Oz, because there are three very lovely ladies in the film who play sisters in sorcery.

MTV News was lucky enough to catch up with two of the three witches during their stop in San Diego where we attempted to get some actual details out of them about their characters' arcs in the film.

"I play a character named Theodora who is also a witch," explained Mila Kunis. "She has a sister, Evanora, who too is a witch [played by] Rachel Weisz, who is fantastic. So you have Glinda, Theodora and Evanora. One is good, two are not so good. One is really bad."

Speaking of being bad, we asked Mila if her character turns a certain shade of evil, a shift teased in the trailer, but the actress wouldn't confirm or deny that particular plot point. "No one said it was my shade of skin," Mila said coyly. "It was just a shade, maybe of a green tone, not particularly on me. We don't know these things yet."

Turning toward the lighter side of things with Theodora's good sister Glinda, we asked Michelle Williams how much her version of the character will be inspired by the original Good Witch in "The Wizard of Oz."

"I think I would hope to be inspired by it," Michelle said. "Our story pre-figures 'The Wizard of Oz'—that's who my character turns into. That's her in her most crystallized perfect form. I thought it was an opportunity to see who she might have been when she was younger, when she was at the precipice of her powers and wasn't fully realized into the Glinda that we know and love from the classic film."

Are you excited to see "Oz: The Great and Powerful"? Tell us in the comments and on Twitter!