Zackery, identified as a male Human, held the position of chief of security for the Imperial Senate.
Prior to the events of the Great Jedi Purge, Zackery served as the chief of Senate security on the planet Coruscant. He frequently ejected Keets Freely from the Senate structure, and on one occasion, discovered him within the chambers of a Senator.
Following the rise of the Empire, Zackery continued his role as head of security, and, in a recurring incident, apprehended Keets inside a Senate office, this time accompanied by Curran Caladian. After their imprisonment by Zackery, the pair successfully broke free, aided by a blaster delivered by an antiquated droid that previously belonged to Dexter Jettster.