Six is one of main characters on Tripping the Rift,
She is voiced by Patricia Beckmann and Terry Farrell in the pilot (two versions), Gina Gershon in season 1, Carmen Electra in season 2 and Jenny McCarthy in season 3.
She is a cyborg who acts as the ship's science officer. She was originally designed as a sex robot, but she wanted to be taken more seriously, so Chode gave her a programming upgrade. Much to his chagrin, this upgrade has also given her a conscience and sense of decency, in spite of her openly sexual nature. She often gets the crew out of trouble by using her erotic attributes and skills in bed. The final episode of the second season revealed that she was modeled after a stripper named "Haffa Dozen" (voiced by Patty Hearst), who later switched to a life of crime.