Sid Uddra was a female human who served as officer in the Imperial Security Bureau and mentor of Sinjir Rath Velus. Uddra was a native of Sixmoon in the Velusia system. During her service at an Imperial Academy, she handpicked Sinjir for training as a loyalty officer, due to his high level of intelligence and aggressive demeanor. Sinjir was transferred to the ISB's training program at the Viper's Nest on the ocean world of Virkoi. Under Uddra's tutelage, Sinjir underwent a harsh and violent training program which involved frequent physical combat and stimulated torture sessions. On one occasion, Uddra even broke his toes in order to toughen him up.