While promoting her new horror film Oculus at South by Southwest (SXSW) Festival, Karen Gillan also talked about her role in the highly anticipated upcoming Marvel movie Guardians of the Galaxy, as well as the big fighting scene with Zoe Saldana.

"Nebula is the female villain and Lee Pace plays the male villain," Gillan described her film character. "We torment people. We're really mean to people."

While Karen Gillan is playing the role of Nebula, Zoe Saldana will be playing the opposing female character, green-skinned Gamora. "We're very angry towards each other," said the former Doctor Who star. "There's a huge fight sequence. I had to train for two months before I could do it. We shot the thing for four days!"

Gillan continued to talk about her film role, which required her to do some dangerous stunts. "I did all of my stunts and a stunt double did them, too," she said. "I refused knee pads at one point and of course then I bruised my knee but that was it."

In addition, what does it take to make a successful film? The Scottish actress mentioned that she not only shaved off her hair for the villain role, but also endured sitting for a 5-hour makeup session every day to make her skin blue. "It was amazing," she recalled the first time she looked in a mirror as the Guardians character. "It was creepy and weirdly doll-like, child-like almost."

Guardians of the Galaxy is set to hit theaters on Aug. 1, 2014.