Here's some good advice, as well as other tips and news about Portland's Rose City Rollers. "I'm all that [much] tougher when I'm Black Sabbatha. It's the one time I'm allowed to just go nuts and beat up on people," says Willis, who wears her dark hair in severe bangs. "I can skate as fast as I want." One commentor thinks roller derby should be an olympic sport. I agree!