Number Six

• Also known as

Cylon model Number Six is a series of female humanoids that are known by various aliases (among these are Caprica Six, Shelly Godfrey, Gina Inviere, Natalie Faust, Lida, and Sonja). Doctor Gaius Baltar begins conversing with a version of Number Six that no one else can see or hear. It is eventually revealed that she is an angel sent by a higher power to protect and guide him.