Rebecca is an Australian actress with a strong theatre background who has appeared in TV shows such as Blue Heelers and Day of the Roses. She's also had parts in such movies as Jerry Maguire and Raw Nerve. 

She's not entirely new to science fiction, having played Ms Vansen in the pilot episode of Space: Above and Beyond. A big fan of the genre, her portrayal of Grayza draws a lot from her enthusiasm for British sci-fi series Blakes' Seven. Now, who'd have guessed that.

Rebeccas' television credits include Backberner, All Saints, Day of the Roses, Medivac, Paradise Beach, Wombat and the telefilms Hypersleep and Official Denial. Her extensive theatre credits include Romeo and Juliet for the Bell Shakespeare Company, Bedroom Farce for Twelfth Night Theatre, and The Blood and Thunder Adventure on Hurricane Peak, Summer Rain, Christmas at Turkey Beach, The Last Yankee and Fuente Ovejuna for the Queensland Theatre Company. Riggs also has appeared in Dust Off Vietnam and Twelfth Night for the Darwin Theatre Company. 

Credit: cast-of-farscape.com