The Castellan was a member of the High Council of Time Lords responsible for overseeing the Chancellory Guard and therefore order on and the security of Gallifrey. The various Commanders of the Chancellory Guard itself acted as the Castellan's subordinates.
The position was protected by some of the most ancient and powerful Gallifreyan laws. (BFA: Lies)
Holders of the office of Castellan
- Spandrell (DW: The Deadly Assassin)
- Kelner (DW: The Invasion of Time)
- Un-named male Castellan (killed) (DW: Arc of Infinity, The Five Doctors)
- Wynter (BFG: Lies)
- Andred (NA: Lungbarrow)
- Maxil (BFG: Lies, Imperiatrix (audio drama)
- Lode (NA: Love and War)
- Temus ((Gallifrey Chronicles), Castellan at the time of Rassilon's seizure of power
