Lucy Lawless, (born Lucille Frances Ryan; 29 March 1968) is a New Zealand actress and singer. She is best known for playing the title character of the internationally successful television series Xena: Warrior Princess which ran from 1995 to 2001. She is also known for the role of D'anna Biers (Number Three) on the re-imagined Battlestar Galactica. Most recently she appeared on the television series Spartacus: Blood and Sand and Spartacus: Gods of the Arena, playing main character Lucretia.