Vicki

Vicki was on an Earth ship with her father , going to the planet Astra, when they crashed on Dido. Vicki and Bennett had were the only survivers of the crash. Bennett murdered the other crew members and Vicki did not know. The Doctor had just said goodbye to Susan Foreman, his granddaughter, so he invited Vicki aboard the Tardis. She was quite intelligent and remained with the Doctor following the departure of Ian Chesterton and Barbara Wright. Steven Taylor soon became their new companion. Vicki eventually left the Tardis on the plains of Troy where, having adopted the name Cressida, she left and began a new life with Prince Troilus.

Vicki was in The Rescue: The Powerful Enemy to The Myth Makers: Horse of Destruction. Excluding Mission to the Unknown.