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Its Berlin, 1989.

James McAvoy plays her hardened, fur-coated fellow agent.

Coldest City, The

Jonathan Prime/Focus Features

(Youve never seen a black mesh tank-top look so good.)

I hadnt seen another character like her out there, Theron says.

She doesnt apologize for anything.

Coldest City, The

Jonathan Prime/Focus Features

We made her strong and feisty.

These wereall things I responded to.

And the actress was up to the task.

Thanks in part to a background in ballet, Theron had what it took to be that onscreen badass.

Theron trained four-to-five hours a day for three months with Leitch and his team of fighters.