Alaina Huffman, <I>Stargate Universe</i> Alaina Huffman, Stargate Universe

Smallville fans know her as Black Canary, but Alaina Huffman is ready to serve up another formidable femme, on Stargate Universe.

In a video profile promoting the new SyFy series, Huffman sums up her Stargate character, 1st Lt. Tamara Johansen, as a medic who is "quite skilled," yet not without her insecurities.

Check out photos of TV's sexiest sci-fi stars

Understandably, such insecurities are only magnified when the SGU team is flung to the far reaches of the universe, without a way home.

"The whole experience for everyone is overwhelming," says Huffman. "There is a lot of stress." But showing a chink in a tough gal's armor is largely what drew the actress to this role.

"I typically play really confident, ass-kicking characters," she says with a smile, "so it's nice to have that inner struggle."

Watch Huffman's complete video profile here, as well as find interviews with castmates such as Robert Carlyle, Ming-Na and Lou Diamond Phillips. Stargate Universe premieres this October, on Syfy.

Crave scoop on your favorite TV shows, from this summer or the upcoming fall season? E-mail senior editors Matt, Mickey and Tim at and follow TV Guide on Twitter.