ISB Supervisors were responsible for intelligence and security duties within their sectors.
ISB Supervisors, or simply supervisors, were Imperial Security Bureau officers of the Investigations branch who were tasked with managing intelligence activities and delegating assets within their assigned sectors, which were drawn by Major Lio Partagaz. As ISB officers, they wore the standard uniforms with white tunics and black pants. Single-rowed rank insignia plaques were used to denote their ranks, with captains using four blue tiles and lieutenants having three blue tiles. Other supervisors made use of a single row plaque with two red tiles followed by two blue tiles.
ISB Supervisors maintained their own staff of junior ISB officers, the ISB Attendants. These officers utilized a gray tunic rather than white, and used two single-rowed blue tiles. ISB Supervisors met as the ISB board, which reported to Major Partagaz. Partagaz chaired meetings with the supervisors and, on occasion, their attendants. Partagaz received briefings from the supervisors, while also ordering reports to be drafted and assignments to be completed. Colonel Wullf Yularen attended emergency meetings at times. The ISB Supervisors worked in the ISB Central Office on Coruscant, and had their own small offices within the building.
ISB Supervisor Lieutenant Blevin responded to the Ferrix incident, which occurred in his area of responsibility.
In 5 BBY, during the Imperial Era, Lieutenant Blevin supervised six sectors, including the Morlana sector, Lieutenant Grandi's area included the Gaulus sector, Lieutenant Lonni Jung's area of supervision included the Abrion sector, Lieutenant Dedra Meero was responsible for two sectors, including the one containing Sev Tok, while Captain Lagret's supervision included Arvala-Six.
Following the Ferrix incident, which occurred in the Morlana sector, ISB Supervisors met with Major Partagaz in a standard briefing. Supervisor Grandi provided an update on the Ryloth sector, stating that the number of detentions were expected to increase and thus required a larger blackline budget. Major Partagaz accused Grandi to be vague when pressed on what the new resources would be used for and demanded specifics. Supervisor Lagret provided an update on the conflict in Arvala-Six, but had not yet completed the assigned memorandum. Supervisor Jung provided an elaboration on more protection for traffic travelling to the Abrion sector.
ISB Supervisors first appeared in "Aldhani," the fourth episode of the first season of the live action web-TV series Andor. The 2023 reference book Star Wars: Dawn of Rebellion: The Visual Guide contradicts the rank plaques depicted for ISB supervisors presented in the TV series, with Dawn of Rebellion establishing that ISB supervisors with rank plaques with three blue tiles were captains, despite such officers holding the rank of lieutenant in the series.
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