Transhuman Sisters of the Unholy Protocol
The Transhuman Sisters of the Unholy Protocol were, in the Fifth Doctor's words, the "android inquisition of Galaxy Five", who had "burned whole galaxies in the course of their demented mission".
They viewed the fact of their own existence as man-made, artificial sentient creatures as a blasphemy. Thus, they sought to atone for their own existence, and ruthlessly attempted to perform acts of "justice" in an attempt to make themselves "worthier" of existence. (AUDIO: And You Will Obey Me) After regaining his memory of what had happened to him following his mind-swap with the Reborn Master, the Decayed Master sent the Transhuman Sisters of the Unholy Protocol after his other self, alongside assassins known as the Dragonhunters. (AUDIO: The Two Masters) Among them was Annie, who posed as an MI6 agent with bionic implants during her investigation. (AUDIO: And You Will Obey Me)