Bondsperson
From Tardis Wiki, the free Doctor Who reference
A bondsperson (AUDIO: Weapon of Choice) or bondservant (AUDIO: Insurgency) was a being whose body was inhabited by a Warpsmith. When Nepenthe was disguised as Sardinopoulos, she claimed that bondspeople made deals with the Warpsmiths; an alternative view was that they were slaves. (AUDIO: Weapon of Choice)