An unnamed Sith Lord served as the Sith supervisor for the crew of the War Hammer, a Star Destroyer, during the Attack on the Hidden Temple. This individual was present on the War Hammer.
As the battle unfolded, Darth Krayt's Sith troopers showed up and engaged in combat, resulting in numerous fatalities among fighters from both factions. Furthermore, upon detecting the presence of Jedi younglings on a departing ship, Darth Rauder commanded Skull Squadron to destroy it; however, Captain Gunn Yage refused to comply and instead eliminated Rauder.
Subsequently, Captain Yage conveyed her decision to defect to her father, Rulf Yage, who was aboard the War Hammer. The Sith Lord instructed Moff Yage to eliminate his own daughter, but he, having grown weary of the One Sith, chose to defect as well. Drawing a blaster, the elder Yage killed the Sith Lord. Following this, he broadcasted a message announcing his alignment with his daughter's defection.