Caerbellak held the rank of Moff within the Imperial hierarchy, overseeing Rydonni Prime throughout the Galactic Civil War. A capable military leader and shrewd political figure, Caerbellak believed he possessed the ability to crush the nascent New Republic and reinstate the New Order following his survival of the Battle of Endor. Operating from his base on Rydonni Prime, he utilized the resources of Rythani Products to engineer a secret weapon intended to obliterate the New Republic. Variise served as his chief protector.