Koh, a Twi'lek male, held the rank of Captain and served as a high-ranking officer within the Corellian Engineering Corporation. His primary responsibility was the management of CEC's mining operations on asteroids located in the Kashyyyk system; additionally, he had oversight over CEC's activities in several other systems. Possessing a stern, military-like demeanor, he insisted on strict discipline and unwavering obedience from all personnel under his command. However, in cases where employees excelled in their duties, he was known to provide significant compensation, including credits and upgrades to their ships used for asteroid mining.