Koh'shak, a male Twi'lek from Clan Shak, served Cazne'olan. His duties involved assisting with discussions concerning Firith Olan's location between Rogue Squadron and Marl Semtin. He oversaw a contest where Sixtus Quin and Septaas faced off against Winter and Wedge Antilles; the prize was information on Firith. Sixtus emerged victorious, earning the information. Despite this, Semtin, Sixtus' superior, circumvented the agreement by bribing a senior official on Kala'uun to locate Firith Olan irrespective of the competition's result. Koh'shak's gender is male.
As the Starport Master on Kala'uun, Koh'shak issued a reward for the capture of Theol Dunoche. Dunoche, a human freighter captain, was wanted for the theft of two Twi'lek slaves.