The Watch

the Watch were the patrolmen and caretakers of the Citadel. The duties of the Watchmen included searching the rooms of the Endless Library, sterilising the chambers of the High Council prior to sessions, performing ceremonial marches and parades commemorating past wars, and tending to any and all monuments and memorials in and around the Capitol.

The Watch had been on Gallifrey before the Time Lords, and the members asserted they would be there long after the Time Lords had gone.

The Watch were rounding up all Womb-born, the Loom-born determined to become Gallifrey's dominant faction. (PROSE: Cold Fusion)

In an alternate universe, The Watchmen knew of the Four Names, and were pledged to kill these four when the right time for each arrived

Raimor and Peltroc were members of the Watch. (PROSE: The Infinity Doctors)