Claudia Black as Admiral Daro'Xen vas Moreh / Matriarch Aethyta

You know her as: Aeryn Sun (Farscape), Vala Mal Doran (Stargate SG-1), Morrigan (Dragon Age: Origins), Chloe Frazer (Uncharted), Samantha (Gears of War 3)

Claudia Black has more nerd cred than we have journalism degrees. Which is to say she has a lot. Well, more than one, at least. How do you measure nerd cred anyway? While we may know her better as the dangerous Morrigan and/or the dangerously sexy Chloe, her roles in Farscape and Stargate have been equally impressive. Her characters in the Mass Effect universe are memorable despite being relatively minor—more proof of her acting prowess.