Zelka Forn Zelka Forn was an elderly Human male doctor who was running a clinic in a part of the Upper City on the planet Taris by the year 3956 BBY . Forn would not refuse help to anyone , regardless of social or xenophobic reasons that would cause others to turn them away . When Revan , a soldier in service to the Galactic Republic , arrived on Taris after his starship , the " Endar Spire " , was destroyed following a Sith attack , Forn asked him for assistance in procuring a serum for the Rakghoul plague , a disease that transformed those infected into rakghoul s — violent , deformed mutant s . Revan journeyed into the Undercity of Taris and found the corpse of a Sith soldier who was carrying some rakghoul serum . Despite a large offer of credits from Gurney , Forn ' s own assistant , if Revan gave the serum to the crime lord Davik Kang , Revan chose to give the antidote to Forn instead , who proceeded to try and make it readily available to those infected by the plague . Although Taris was bombed by the Sith , Forn ' s synthesized serum would be recovered over three centuries later , and his work helped Republic scientists make progress against the rakghoul virus that continued to plague Taris . Biography . Life on Taris . A Human male , Zelka Forn lived on the planet Taris . He was the founder and owner of a medical facility that was used to heal those that were sick and wounded , and had a single assistant named Gurney . Forn possessed a desire to help anyone who was hurt or injured , regardless of their species , homeworld , or political affiliation , which could have caused other doctors to refuse service to them . In 3956 BBY , when the Galactic Republic warship " Endar Spire " was destroyed over Taris by the Sith Empire , a few Republic soldiers managed to escape . As the Sith occupied the planet , Forn received all the proper permits to keep his facility running from the newly appointed Sith Governor . Forn recovered and took care of some of the Republic soldiers , putting them in kolto tank s in a back room of his facility , even with the possibility of being arrested by the Sith for giving care to soldiers affiliated with the Empire ' s enemy . Forn knew that they would never fully recover , as their wounds were too extensive , but he did what he could to make their last few days comfortable . Finding a cure . Forn was also upset about not being able to heal those stricken with the Rakghoul disease , which transformed those it infected into deformed mutant s known as rakghoul s . The plague caused a great deal of trouble to some on Taris , due to the fact that the Sith , after overrunning a Tarisian military base which contained the only samples of an antidote , reserved it for their own soldiers patrolling in the rakghoul - populated Undercity of Taris . Forn grieved for the Outcasts , people who lived in the Undercity who had been — or whose ancestors had been — cast out of the Upper City and were forced to encounter and experience the disease ' s effects on a daily basis . Forn spent a great deal of time researching the cause of the rakghoul infection . During the battle above Taris , Revan , a soldier serving aboard the " Endar Spire " , reached an evacuation pod with fellow Republic soldier Carth Onasi and fled to the surface of Taris to search for Jedi Knight Bastila Shan , whom the Republic considered a valuable asset . Shan had evacuated with a number of other Republic personnel from the " Endar Spire " and reached the planet . On Taris , Revan arrived at Forn ' s facility and discovered the Republic soldiers in his back room . Revan was impressed by the doctor ' s compassion and agreed not to disclose the location of the Republic soldiers to the Sith . Forn felt the soldiers would die from the plague or be captured , and he did not want that to happen . From Forn , Revan learned about the serum and where it was kept . As Revan was leaving to retrieve the antidote from the Sith base , Gurney , Forn ' s assistant , drew Revan aside and told him about Davik Kang , the local leader of the galactic criminal group Exchange , who also wanted the serum . Gurney promised that Kang would pay a much higher price for the serum than Forn would ever be able to . When Revan and his companions traveled to the Undercity , Revan found the corpse of a Sith trooper who was carrying the Rakghoul serum . Taking the serum , Revan spurned Kang ’ s offer and instead gave it to Forn , who offered him fifty credits and two medpacs for it . Revan refused , however , believing Forn needed the credits more than he and his companions did . Forn synthesized the serum to sell it cheaply to those infected , and he also gave Revan a discount on all of his stock , saying it was the least he could do . Legacy . Only hours after Forn began to synthesize the serum , Taris was bombarded by the Sith Lord Darth Malak in an attempt to kill Shan . Forn ' s achievement in synthesizing the serum was recorded in the archives of the HoloNet , and three centuries after Taris ' bombardment , a supply of the serum survived in the ruins of the Sepanik Memorial Hospital . During the Cold War between the Republic and a reconstituted Sith Empire , pirates from the Death ' s Claw gang recovered the serum from the remains of the hospital , though they found that it was not entirely effective on account of the rakghoul virus ' mutation . Doctor Ianna Cel , with the Taris Resettlement Initiative , hired a Republic operative to retrieve the serum from Sepanik , and the individual was able to recover some of the serum from the Death ' s Claw after learning that the pirates had taken all of the serum . Though Forn ' s serum was not enough to protect against present - day rakghouls , Cel was optimistic about synthesizing a cure by learning from Forn ' s work . Personality and traits . Forn was an elderly man who had dark skin , graying black hair , a moustache and brown eyes . He had extensive medical training and was able to cure many injuries despite a shortage of resources in his medical facility . He had an extreme concern for others , evident by his wish to medically help everyone who was ill . He would not refuse help to anyone , even if they were an off - worlder or alien , or even if he hated the person . That differed from the mentality of most of the Human population of Taris , who were xenophobic and considered themselves superior to aliens . Forn feared the Sith because he believed that they might one day close down his clinic , and he preferred not to have anything to do with them . When Revan gave him the serum and declined his reward , Forn considered Revan to be very noble , but still believed that Revan deserved something for his efforts . Behind the scenes . Zelka Forn first appeared as a non - playable character in the 2003 video game " " , developed by BioWare . He was voiced by Daran Norris . Forn also gained an entry in 2008 ' s " The Complete Star Wars Encyclopedia " . Although the player has multiple choices in regards to how he or she acts and treats Zelka Forn , the light side choices are those that are canon ical . The game can also be played without Revan ' s visit to the medical facility , meaning that Forn is never encountered . If the player follows the dark side , they can threaten to tell the Sith about the Republic soldiers unless Forn hands over credits to keep them quiet . If the soldier Carth Onasi or Bastila Shan are in the party , they will protest against such an action . When trying to gain entry to the room of Forn ' s facility where the Republic soldiers are , Revan can either bash down the door or bypass the locks . If the player declares allegiance to the Republic , Forn can also simply show the soldiers to the player . The player can also sell the Rakghoul serum to the Hutt criminal Zax and earn one thousand credits . If the player has a high enough persuade skill , they can persuade Zax into paying one thousand five hundred credits for the serum . Both options result in the player gaining dark side points . The player can still buy a copy of the serum from Forn , albeit at a higher price , and Forn will also hold resentment toward the player . Should the player approach Forn while wearing Sith trooper armor , Forn will maintain that he has the correct permits and will ask the player to leave , saying he doesn ' t want any trouble . If , however , the player angers or harasses Forn too much , the option to give the serum to Forn is lost , although he will still offer supplies and healing to the player . The 2011 video game " " revealed that Revan had in fact given the serum to Forn , as Forn ' s serum played a major part in the quest " Pirate Medicine . "