Sirinek, a Human captain (of the male variety), served within the ranks of the reconstituted Sith Empire throughout the Galactic War. He found himself positioned aboard the Harrower-class dreadnought named Regnant, which acted as the flagship for Admiral Harridax Kirill, in the year 3640 BBY. When the Battle of Corellia unfolded, the Regnant experienced an intrusion by the Voidhound, Kirill's arch-enemy; Sirinek met his demise while attempting to prevent the Voidhound from getting to the Admiral.