The rogue Sith Lord Grathan has declared himself the thirteenth Dark Council member, with his own power base and sphere of influence within the Sith hierarchy. Although his claim has not been widely recognized, he controls a substantial private army on Dromund Kaas. The Dark Council has authorized all-out warfare against Lord Grathan and anyone who supports him.
After being driven from the Citadel, Lord Grathan holed up in his estate outside Kaas City. His forces there are made up of apprentices, loyal Imperial troops and cybernetic supersoldiers he developed in his secret weapons labs. His cadre of elite scientists‒some volunteers, others kidnapped and forced into service‒manufactures a seemingly endless number of war droids, as well, reducing attrition in Grathan's army to near zero.