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By Sierra Marquina

In Kevin Costner’s new action thriller 3 Days to Kill Amber Heard plays seductive CIA agent Vivi, a character that’s not very easy to describe and is pretty complex.

Which is one of the reasons Johnny Depp‘s gal was attracted to the role.

Amber, who tends to be selective when it comes to picking roles, tells On Air with Ryan Seacrest: “She’s created this world for herself in which she can exist under a different set of standards. There’s an incredible sense of

In short, she says Vivi is a “bad-ass.”

Catch 3 Days to Kill out in theaters now.