Assassination of Valkorion In the aftermath of the first skirmish with the Eternal Fleet in 3637 BBY , two prominent figures of the ongoing Galactic War — Darth Marr and the Outlander — were taken prisoner and brought before Emperor Valkorion of the Eternal Empire of Zakuul . Darth Marr instantly recognized Valkorion as the new face of Sith Emperor Vitiate , who had abandoned his Sith Empire and even destroyed all life on the Imperial world of Ziost . Valkorion stated that there were no limits to his power and offered Darth Marr to kneel to before him , and when the Sith Lord angrily refused and attacked Valkorion ' s Knights of Zakuul instead , killed the leader of the Dark Council with a single Force blast . Valkorion then made the same offer to the one remaining Outlander , but Prince Arcann , the spiteful son of Valkorion , took advantage of this moment to attack his father , resulting in the death of his physical body . Having already endured deaths of multiple host bodies over centuries , Vitiate ' s spirit attached itself to the Outlander , whom Arcann ordered to be frozen in carbonite intending to trap his father forever , alone and forgotten . Arcann then immediately seized the Eternal Throne and proclaimed himself the new Eternal Emperor , blaming his father ' s assassination on the Outlander regardless of their involvement and beginning a conquest against the Core Worlds for what he claimed was an act of unprovoked aggression . Prelude . In addition to being the Emperor of the Sith Empire for over thirteen centuries , Vitiate had also created a secret Eternal Empire in the Wild Space , ruling from the Eternal Throne on Zakuul as Immortal Emperor Valkorion . Following the rejuvenation of his spirit during the Battle of Yavin 4 and the subsequent Devastation of Ziost , Vitite had completely abandoned the Sith Empire and focused all of his attention on Zakuul . Valkorion ' s biological sons Arcann and Thexan had recently come of age and performed a series of brutal raids on several galactic worlds , during which Arcann lost his left arm and received significant facial scarring , requiring extensive cybernetics . When his sons returned with trophies from defeated enemies , Valkorion turned away from them , and angered at his father ' s indifference , Arcann attacked him . Thexan intervened , and in a brief exchange of blows that followed Arcann inadvertently struck his brother down . Not long afterwards , a joint Imperial - Republic task force approached Zakuul ' s territory for the first time , and Valkorion send the Eternal Fleet in response . In the resulting battle , the invading ships have been completely destroyed , while Arcann recovered two survivors , Dark Council leader Darth Marr and the Outlander of great importance to the ongoing Galactic War . The prisoners were brought to Arcann ' s Eternal Flagship , which departed with them back to Zakuul . The confrontation . Shackled and disarmed , Darth Marr and the other Outlander were brought by Prince Arcann directly to the Eternal Throne room . Darth Marr immediately identified the Immortal Emperor as just another host body of Sith Emperor Vitiate , though the Outlander still remained incredulous that he could build a whole other Empire in total secret . Neither acknowledging nor dismissing their claims , Valkorion bluntly stated that the fate of galactic Core Worlds and people on them did not concern him and offered Darth Marr the chance to kneel before him , removing his shackles with the Force . However , Marr was enraged by silence and indifference of the former Emperor who abandoned the Sith Empire and refused to kneel before him ever again . He Force - pulled a lightsaber pike from one of the Knights of Zakuul that guarded the Throne room and proceeded to attack them , killing at least two . Valkorion then killed the Sith Lord with a powerful blast of concentrated lighting , at which point his daughter and High Justice Vaylin ordered all Knights and Scions of Zakuul to clear the room . Arcann and Valkorion were left alone with the Outlander , whom the Immortal Emperor once again asked to kneel , offering to share his power with them in return . At this point Arcann , who continued to despise his father for ignoring his ambition , seized the moment and used Valkorion ' s preoccupation with the Outlander to once again attempt to strike him down . In the resulting chaos , Valkorion ' s physical body received a mortal wound , while Vitiate ' s spirit refused to surrender to mortality and entered the Outlander ' s body in search of a new host . The resulting release of energy knocked the Outlander unconscious and Arcann used it to blame Valkorion ' s assassination on them . However , he sensed that his father ' s spirit was still present inside a new host body and ordered the Outlander to be immediately frozen in carbonite . Aftermath . His father no longer in his way , Arcann immediately assumed his Eternal Throne and proclaimed himself the new Eternal Emperor . He claimed that the Outlander had assassinated Valkorion for seeking to destroy Zakuul society and promised revenge on the Core Worlds , launching a full - scale Eternal Empire conquest in retaliation . Within a year , the might of the Eternal Fleet and the strength of the Knights of Zakuul overpowered the Galactic Republic and the Sith Empire , forcing both to sign peace treaties and pay heavy tribute to Zakuul . Arcann believed that he had condemned his father to a fate worse than death , trapped inside a body that he could neither leave nor use to escape . Indeed , Valkorion was tied to the Outlander , but his new host had shown an unexpected resistance and retained control of their mind and body , forcing Valkorion to use deception and attempt to gain their trust instead . Valkroion showed the Outlander visions during their shared carbonite imprisonment and also used the Force to save them from death by carbonite poisoning caused by imperfect carbon - freezing process . His Empire left undefended , Darth Marr also refused to perish and persisted as a Force ghost , able to manifest himself on different worlds in the galaxy unlike most Sith spirits , who usually remained bounds to their tombs or artifacts . Behind the scenes . During " " Chapter I : The Hunt player can either accept or reject Valkorion ' s offer of power , neither of which is a Light or Dark side choice . If the player accepts , Valkorion begins to empower them with his essence , only for Arcann to do what the player could not and stab his father in the back . If the player rejects the offer , Valkorion orders Arcann to kill them , only for Arcann to cut the player ' s restraints and throw them their weapon , so that they could attack the Emperor together . Arcann will attempt to land a blow on Valkorion , who will easily block his son ' s direct attacks , only for the player to seize the opportunity and stab / shoot him in the back instead . In any case , Valkorion ' s spirit attaches himself to the player , who is publicly blamed by Arcann for the murder , and the overall events play the same , although the choice will still be referenced by Valkorion in dialogue several times during the subsequent events .