Terminator Salvation's Helena Bonham Carter reveals a few secrets

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Dec 14, 2012, 3:54 PM EST

Helena Bonham Carter revealed BIG SPOILERS about her top-secret role in McG's Terminator Salvation, according to a report in the British Daily Mail, which also published a spoilerific image of what it says is her character, which you can view after the jump.

Carter said that she plays a villain in the film: "I kind of play a baddie, definitely a baddie," she said. "I don't know how much I'm allowed to say, but I'm a very bad person."

Carter will reportedly play Serena Korgen, a role originally envisioned for Tilda Swinton, whom Carter replaced shortly before filming began in Albuquerque, N.M., last year. Carter worked 10 days on the movie, which also stars Christian Bale, Sam Worthington, Anton Yelchin and Bryce Dallas Howard.

"Tim [Burton] would have killed me if I hadn't done it, because he's such a Terminator fan," Carter said, referring to her longtime partner. Terminator Salvation opens May 21.