Jenkes was a lieutenant with the Imperial Security Bureau on Lothal. During the fifth year of Emperor Palpatine's reign, Jenkes managed a gladiator arena on the planet of Nyriaan. In his line of business, he was acquainted with a Dug bookmaker Gronson "Shifty" Takkaro. At a later stage, Jenkes joined the Galactic Empire and became an agent of the Imperial Security Bureau.