Imperial Guard
From Tardis Wiki, the free Doctor Who reference
The Imperial Guard was the name taken by Imperiatrix's personal guard when she declared herself ruler of the Time Lords of Gallifrey. (AUDIO: Imperiatrix)
The Dalek Emperor was protected by black-domed Imperial Guard Daleks. (PROSE: Birth of a Legend)
Alice Ferrin served as part of the old Emperor's Imperial Guard on Caspertine. Though they mostly attended parades, they once had the honour of guarding the human Emperor during the ice picnic, when the snow bears danced. (TV: Nightmare in Silver)