A T'surr functioned as a Daimanate Sith trooper stationed on Chelloa around 1032 BBY. In the course of the Raid on Chelloa, he was on the verge of eliminating the disguised Jedi and the head of the Chelloan resistance, Gorlan Palladane, along with numerous enslaved laborers, but Jedi Knight Kerra Holt intervened, rendering him unconscious after bisecting his crowbar-mace. A bald human officer was his comrade, and Gorlan himself subdued this officer.
He lived through the conflict and was there when Sith Lord Daiman interrogated Gorlan. While Daiman physically assaulted the restrained Gorlan, delivering punches and kicks, T'surr held him captive. Daiman had uncovered that Gorlan was the operative who had divulged details regarding his baradium activities to both the Jedi and his adversary, Lord Odion.