Sexiest Photos of Tricia Helfer Full Name “Tricia Janine Helfer” is an American Canadian actress and former model (Born: 11 April 1974, Donalda, Canada). She is best known for playing the humanoid Cylon Number Six in Ronald D. Moore’s re-imagined Battlestar Galactica television series and for voicing Sarah Kerrigan in the Starcraft 2 trilogy. These Near-Nude Tricia Helfer…