Knash, a male Sith Human, served as the warden at the Sith Academy located on Korriban amidst the Cold War era conflict between the Galactic Republic and the reconstituted Sith Empire.
In the time of the Cold War, Overseer Tremel dispatched a talented young Sith Acolyte to Knash's holding cells. The Acolyte's task was to question and pass judgement on three captives: Solentz, Devotek, and Brehg. Upon the Acolyte's arrival, they observed Knash employing a shock collar on Vette, a Twi'lek slave. Knash acquainted the Acolyte with the three prisoners, leading them through the interrogation process and entrusting them with determining the prisoners' destinies. Subsequently, Knash communicated the outcomes to Tremel.
Subsequently, Knash relinquished Vette into the care of the acolyte, who needed her assistance to infiltrate the Tomb of Naga Sadow as part of their culminating trials.