Karness Muur Karness Muur was once a respected Knight of the Jedi Order . However , his lust for power caused him to study the nature of the dark side . He became one of the Dark Jedi during the Hundred - Year Darkness , alongside XoXaan and Ajunta Pall . He was one of the creators of creatures such as Leviathans as well . Muur fought in the Battle of Corbos and was amongst the surrendering survivors . Alongside Pall and XoXaan , Muur was exiled from the Republic and arrived on the planet Korriban with his fellow Dark Jedi . At the time he encountered Korriban ' s native species he carried a yellow - bladed protosaber , which he brandished in their presence as a display of his superior power . Muur and his fellow Dark Jedi recognized the potent and untapped Force - sensitivity of the Sith race , and immediately sought to enslave them through the dark side of the Force . After conquering the Sith species , Muur like his fellows anointed themselves as " Lords of the Sith " , and were the very first to don the honorific title . Karness Muur also possessed his own personal Sith amulet , one imbued with tremendous dark side power , should the wielder have the strength to dominate it . Crafted by his fellow exile , Sorzus Syn , the Muur ' s talisman afforded Muur the power to transform those in his close proximity into mindless thralls for him to command . When the Talisman was found not to work on Force - sensitives or certain alien species , Muur further engineered the Rakghoul plague , an infection which could be spread by those already under his thrall . With his army of rakghouls , Muur intended to use them to rule the galaxy . He also created the Codex of Karness Muur around this time , in which he illustrated the power of his beloved Talisman and its intentions for the Sith . At this point he was already using a modern lightsaber , as opposed to a protosaber . Muur was not without rivals among his brethren , though . One such enemy was another Sith Lord named Remulus Dreypa who created an specialized stasis pod to capture and neutralize Muur and the power of his Talisman . However , Dreypa was never able to contain or capture Muur within his oubliette . Biography . Spiritual existence . When Muur experienced his physical death , the Talisman was able to sustain his spirit . The Sith Lord was thus able to continue with his schemes long after his death , with the Talisman acting as his gateway into the world of the living . His ultimate plan was to find a strong Force - sensitive individual , and trick them into wearing the Talisman — which would then allow Muur to possess the being and access their own Force abilities . The First WatchCircle of the Jedi Covenant envisioned him during a memorial service for one of their fallen , Togrutan Jedi Consular Raana Tey . In this vision , Muur lead an army of rakghoul s , which he kept organized allowing them to use weapons and vessels . He was seen wearing the Talisman on his chest , and had a curved - hilt lightsaber hanging from his belt . In the vision , he was accompanied by a hooded person wielding a red lightsaber . A suitable host . Muur was seen in another vision by one of the Covenant ' s agents , Master Celeste Morne , after she had pulled Padawan Zayne Carrick out of the Talisman ' s grip . When she asked who he was , he simply answered that he was the future . Because she was Force - sensitive , Muur ' s spirit bonded itself to Morne through his Talisman , and tried to take full control over her . He planned to leave the Mandalorian - held planet Jebble and spread his Rakghoul Plague throughout the galaxy , using Morne as his temporary host body . With assistance from Carrick , Celeste realized that she was being corrupted by Muur ' s influence through the Talisman . Morne then requested that Carrick end her life , but Carrick offered her another option . He placed her in stasis within Dreypa ' s Oubliette , the very object designed to halt Muur ' s machinations . In stasis , the Sith ' s plans were delayed indefinitely , while the Jedi attempted to find a means to counteract the power of Muur ' s Talisman . Four millennia later . For four thousand years , Muur and Morne were suspended together within the oubliette . It was soon found by miners and then sold to smugglers , but eventually , when Morne was awoken from her long slumber by Darth Vader , she and Muur learned that four millennia had passed . They also learned that while the Mandalorians did not defeat the Galactic Republic , it was a new incarnation of the Sith Order who now ruled the galaxy , which brought a delight to Muur . When Morne attacked Darth Vader , Muur sensed the greater power within the new Dark Lord and began taunting Morne to accept death to escape his grasp , while also whispering to Vader to take the Talisman for himself , and then use its power to slay his master . Not willing to allow Vader to be possessed by an ancient power , Morne transformed the clone troopers into rakghouls , forcing Vader , who feared trading one Sith Master for another , to flee . Muur was furious that the Jedi could use his power and was left stranded on the desert moon , imprisoned within Morne ' s body . Two decades later . For nearly two decades , Muur and Celeste were trapped on the desert moon , with the former driving the latter insane . Muur made her believe that Zayne and Vader abandoned her on the moon . But Muur once again saw his chance of galactic domination when a Rebel Alliance squad came to the moon on false information of an Imperial weapon . Seeing Luke Skywalker and Leia Organa and sensing them for what they were , Muur had his Talisman release itself and leap at Luke , but when Leia tried to interfere , Muur decided to take her instead . The Talisman fastened to Leia ' s neck but Celeste removed it , not willing to let another suffer what she went through . She reattached the Talisman to her neck , thus reimprisoning Muur within her again . Together , they escaped the moon in an abandoned GR - 75 medium transport . A century later . More than a century later , Celeste captured the Star Destroyer " Iron Sun , " transformed its entire crew into rakghouls , and took it into a fractured hyperspace lane in the Deep core . But Karness was patient and knew that he would have to possess someone more powerful eventually , and when he did , he promised Celeste would die . When Cade Skywalker boarded the " Iron Sun " , Muur could sense the great power within him . Muur became even more intrigued when Cade used his dark - side powered healing abilities to cure himself of the rakghoul plague . After Cade ' s team took over an Imperial garrison on Had Abbadon , Muur began playing with everyone ' s minds , giving Shado Vao a vision of him slaying Celeste and the Talisman possessing him . Azlyn Rae sought to destroy the Talisman but Cade stopped her . Muur ' s voice in her head caused Cade to warn both Celeste and Muur that if there was any more trouble , he swore to lock them in a torpedo and send them to the Deep Core ' s black hole . Soon after , Muur in the body of Celeste made a transmission to Coruscant , showing that he had imprisoned Cade . Krayt and his Hands traveled to Had Abaddon to negotiate a deal that would give their master a way to cheat death . However , the deal was actually a trap , designed to assassinate Krayt , or so the others had thought . Only towards the end did Muur ' s true intentions take hold : to kill the Jedi , turn Cade and the others into Rakghouls , and take Krayt ' s body for his own . During the fight , Muur and Celeste entered direct combat with Krayt . After several shots of intense Force lightning , Azlyn Rae stabbed Krayt in the back with her lightsaber , but was caught in the blast created by Muur and Celeste . Krayt was sent meters below the compound and Rae was considered dead . Celeste realized that Cade would not be controlled by Muur and so decided it was time to hand over the Talisman to him . Cade ignited his lightsaber into Celeste ' s torso , killing her . Within a few moments , Celeste ' s body disintegrated into dust and the Talisman crawled its way up onto Cade ' s arm . Muur , confident he had found his new body from which to rule the galaxy announced his plans to Cade ; however , Cade revealed that Krayt wasn ' t the " only " Sith Lord the trap was set for . Cade then used his special ability to find the flaws throughout the Talisman , and overwhelmed it with Force energy , destroying both it and Muur . Powers and abilities . As a Jedi and a Dark Jedi , Karness Muur delved into arcane practices of the dark side . By his own admission , Muur used the dark side to twist , prolong , and preserve life . He engineered many forms of Sithspawn , including leviathans . As a Sith Lord , Muur ' s talents grew exponentially . He was among the original Sith Lords , and thus was instrumental in the development of their abilities and lore . Muur was a skilled dark side healer by his own statement . He demonstrated his healing ability for Darth Krayt , whose own attempts at healing had repeatedly proven unsuccessful , even including the knowledge of Muur ' s contemporary , XoXaan , who was a famed Sith healer in her own right . Offensively , Muur displayed tremendous talent with the Force . He claimed to have vanquished many rival Sith Lords in his career , and was even targeted by one in particular , Dreypa , who created a device specifically designed for the containment and suppression of Muur ' s power . Muur regarded the strength of Darth Krayt as moot , despite Krayt being the most powerful Sith of his own time . Muur also displayed a mastery of Force lightning , using it to deadly effect on several occasions . In the final battle against Darth Krayt , Muur created the most devastating Force storm , an ability he manifested while in control of Celeste Morne ' s body . Muur was also a pioneer of Sith magic . He developed a spell that turned non Force - sensitive beings into mindless beasts called rakghouls . Muur was also one of the first to practice Sith alchemy . His rakghoul plague , a malady that was transferred through the saliva of a rakghoul which turned its victim into the same , was engineered in this manner . Upon his physical death , Muur ' s spirit inhabited his amulet ; however , his Force abilities were only accessible if the talisman were worn by a living being . Muur wielded a yellow bladed protosaber during his time as both a Jedi and a Dark Jedi . His yellow blade saw action during the Battle of Corbos , and he carried it with him when he was exiled from the Republic . As a Sith Lord , Muur apparently transitioned from the protosaber , which required the use of an external power source , to a curve - hilt , red blade lightsaber . This usage of the curve - hilt lightsaber would most likely mark Muur as a Makashi practitioner , making him a deadly duelist .