The Inspectorate functioned as an inspection organization under the authority of the Galactic Empire. During his tenure as adjutant to Darth Vader, Inspector Thanoth was a member of the Inspectorate. Thanoth discovered Vader's scheme to assassinate and supplant the Emperor; as a result, Vader murdered him. Lieutenant Magna Tolvan, an Imperial officer who had fallen from grace, was designated as Thanoth's successor. Following this, she received a new assignment to the agency's Coruscant HQ holding the rank of Lieutenant-Inspector, and later became Captain-Inspector after the infiltration of Hivebase-1.