Controller (Bad Wolf)
Blind and connected to Satellite Five feeds at the age of five by dozens of cables, the Controller acted as the eyes and ears of the Daleks, constantly monitoring the transmissions that flowed through her. (DW: Bad Wolf) Essentially, she served a similar function to the Editor and the Jagrafess, a century before, though she had less say over her actions. (DW: The Long Game)
Nevertheless, the Controller loathed and plotted against the Daleks. She waited until a rare solar flare would temporarily disrupt communications between the Dalek fleet and the Daleks could not monitor her thoughts, enabling her to warn the the Doctor of the enemy "waiting in the dark" and pass on to him the co-ordinates of Rose Tyler, which would enable him to rescue her.
Transported to the main Dalek saucer, the Daleks quickly exterminated her. (DW: Bad Wolf)
- The Daleks also employed a Controller as their collaborator on an alternative Earth, which they had conquered. (DW: Day of the Daleks)
