Jarak Jarak was a male Anomid scientist interested in researching the living brain through whatever methods necessary . His colleagues disapproved of his techniques , but could not argue with results , as Jarak has developed a gruesome but effective brainwashing method . He had many potential buyers , but accepted the offer to work for Eternal Emperor Valkorion , leaving the known space to work in the Sanitarium on Nathema . There Jarak was tasked with conditioning Valkorion ' s daughter Vaylin , an extremely powerful Force - user , and eventually succeeded after exhausting all conventional methods . Years later Vaylin became the Eternal Empress of Zakuul and ordered Jarak to find a way to undo his work and remove her conditioning . Jarak developed a ritual that none of the test subjects could survive , but Vaylin agreed to it nonetheless . However the ritual went wrong and Vaylin ' s power went out of control , threatening to destroy the Sanitarium and everyone in it . Jarak escaped and ran into Lana Beniko and the Alliance Commander , convincing them to escort him inside the Emperor ' s Vault , which could shield them from the blast . The three of them barely managed to get inside the vault in time , but the energy blasts overloaded the circuits , trapping them inside . Jarak asked his companions to activate the backup generators , but while they were busy with it , he was killed by the vault guardian . Biography . Unlike others of his species , Jarak was not interested in researching technology , but preferred to focus on the mysteries of a living brain . To better understand the mind , Jarak used increasingly painful methods , believing individual suffering to be necessary for scientific process . Eventually , his research produced a method of brainwashing patients to obey any command for up to ten hours , with the side effects of hives , delirium and 90 % death ratio . Nevertheless , multiple buyers ranging from private military organizations to criminal cartels expressed interest in the method . Jarak , focused on pursuing his research , eventually accepted an offer that promised him unlimited test subjects , ownership of facilities , and complete control of methods . The offer came from Valkorion , an alter - ego of the Sith Emperor Vitiate , who ruled the Eternal Empire of Zakuul in the Wild Space , unknown to the larger galaxy . Disappearing from known space , Jarak came into Valkorion ' s employ some time after the beginning of the Cold War . Valkorion ' s daughter Vaylin had by that point shown both immense strength in the Force and an inability to control it . Seeing her as danger to others and a threat to his plans , Valkorion send Vaylin to the Sanitarium on Nathema , the world on which he consumed all life in a Ritual of Nathema thirteen centuries prior . Jarak was given a laboratory in the Sanitarium , tended by Nathema Zealot s , and a free reign over Vaylin . Allowed to cross any line except death , Jarak had to find a way to condition Vaylin ' s behavior with a great variety of assets and test subjects at his disposal . Jarak subjected Vaylin to many horrors during her stay on Nathema , and she was tested both physically and mentally in constant fear , pain and isolation . She was made to observe test subjects being torn apart by creatures , witness the dissection of their corpses following the experiments and experience the effect of chemicals and implants . Eventually Jarak exhausted conventional methods and subjected Vaylin to torture by machines of his own design . In the end , Vaylin ' s mind was broken and while she herself became a cruel , vindictive person prone to temper tantrums , she remained unaware of the true purpose of her stay on Nathema - being conditioned to become powerless against whoever spoke the phrase " Kneel before the Dragon of Zakuul " in her presense . Years came by and Valkorion was eventually killed , his Eternal Throne assumed first by his son Arcann , and then by Vaylin . After a confrontation aboard the " Gravestone " made Vaylin aware of her conditioning , she contacted Jarak again and used her new authority as the Eternal Empress to order him to break her conditioning . Jarak returned to Nathema ' s Sanitarium , where Vaylin provided him ample test subjects . Eventually Jarak made a breakthrough and contacted the Empress during the Grand Festival of Empress Vaylin . Vaylin soon came to Nathema , where Jarak witnessed her slaughtering his test subjects with a lightsaber adn expressed gratitude that she did not possess such weapon as a child . He then explained that the process to break her conditioning would be even more extreme , with nobody else surviving it so far . However , Jarak also assured the Empress that her unparalleled strength in the Force gave her a chance that nobody else had . Vaylin agreed to the process , but soon after it started , she was overloaded with pain and her power went out of control , obliterating several Zealots and Keepers . Jarak himself escaped the room , but was confronted with unlikely presense - Lana Beniko and the Alliance Commander who followed Vaylin attempting to stop her from breaking her bonds . Jarak quickly explained that only he knew a location of a safe place and only his captors would be able to escort him there through the beasts that went mad from Vaylin ' s power . Working together , Jarak brought the two to the Emperor ' s Vault , where Valkorion held artifacts even he deemed to dangerous to use . Once safely inside , he gave them a helpful suggestion on how to restore the Vault ' s power , allowing them to eventually get out . However , while Beniko and Alliance Commander were restoring the power and exploring Dramath ' s holocron , Jarak was ambushed and killed a by a vault Guardian .