Renning, a portly Human male Sith Lord, served as the Sith Master to both Malora and Dominique. The Dark Council provided him with substantial resources, enabling him to advance the knowledge of the Sith. In the era of the Cold War between the Galactic Republic and the newly risen Sith Empire, one of his apprentice believed he was squandering the Empire's resources and tried to undermine one of his tuk'ata trials. Angered by her interference with his research, Renning inflicted torture upon her, unleashing a blast of Force lightning as a form of retribution.
His life came to an end when a Republic assault squad was sent to secure datacrons and artifacts of the Sith on Korriban.