Seviss Vaa Seviss Vaa was a male Sith Lord and a powerful member of Lord Skere Kaan ' s Brotherhood of Darkness during the late movements of the New Sith Wars . A scholar , Vaa took particular interest in the alchemical practices of long - dead Sith Lord Naga Sadow , and dreamed of resurrecting the lost art of Sith alchemy . Vaa hoped to create a storehouse filled with the most insidious Sithspawn pulled from the recesses of the dark side of the Force . To that end , the Sith Lord began conducting a series of experiments , hoping to devise monsters with which he could battle the Jedi . An early experiment of Vaa ' s took place on the world later known as Aduba - 3 . Taking a local lizard , Vaa used his powers to mutate the animal , giving rise to a gargantuan creature , conditioned to go berserk at the sight of a Jedi lightsaber . The experiment was unstable , however , and Vaa had it stored in suspended animation below Aduba - 3 ' s surface for future study . The Sith Lord subsequently perished during the Ruusan campaign in 1000 BBY that also saw the deaths of the other members of the Brotherhood of Darkness . His Aduban behemoth caused a great deal of carnage a millennia later , when it wreaked havoc on the village of Onacra . Biography . Monster mash . Seviss Vaa was a male Sith Lord and a member of Lord Skere Kaan ' s Brotherhood of Darkness during the later stages of the New Sith Wars , circa 1000 BBY . The Brotherhood was a confluence of the great Sith Lords of the time , and Vaa was considered one of the greatest of Kaan ' s subordinates . He was a scholar of Sith lore , and found particular interest in ancient alchemical texts authored by the long - dead Lord Naga Sadow , architect of the Great Hyperspace War and the leader of the old Sith Empire . Vaa also sojourned to the ruins of several Sith temples . Lord Vaa launched extensive research into the worlds of the Sith Empire . He counted over a hundred habitable worlds that had comprised the Empire , and discovered that the Sith had previously controlled the wealth of a thousand sentient species . It was his hope that under the leadership of Kaan , the Brotherhood of Darkness could reclaim the worlds of the Sith Empire , and perhaps expand beyond those borders . Vaa discovered the locations of Sith temples on various worlds , including Thule and Dromund Kaas . He shared the locations with only Lord Kaan . Vaa also explored ancient ruins on Khar Delba and its moon , Khar Shian , though he found no material objects of particular worth . Nonetheless , he found the explorations to be interesting . To his disappointment , Vaa discovered that many Sith worlds had been stripped of their relics . In his view , the greatest loss had been the destruction of Veeshas Tuwan , the Sith library on Arkania . Vaa felt the destruction of the Sith Empire ' s history alone justified Kaan ' s intended destruction of the Jedi , the mortal enemies of the Sith . He recorded his findings in the Telos Holocron , although he maintained a degree of secrecy as to the location of several of the temples . In addition to profiling ancient Sith worlds such as Korriban and Ziost , Vaa also outlined the worlds that the Brotherhood of Darkness was using to foster their development , such as Honoghr and Umbara . Vaa also hoped to revive the lost art of Sith alchemy , and planned to give rise to a storehouse of the most sinister creations , borne from the depths of the dark side of the Force . He chose the world that would later be known as Aduba - 3 as one of his testing grounds . In particular , one of his earliest experiments was conducted there . He found a native lizard , and used his considerable knowledge and power to mutate it into a gargantuan dark side abomination . The experiment was inherently flawed , but was deemed a work worthy of further study by the Sith Lord . Vaa ' s monster would be driven mad by the mere presence of a lit Jedi lightsaber . As a result , the creature would target the Jedi , utilizing a specially designed organ that allowed it to fire concentrated blasts of deadly lightning from its head . Vaa ' s abomination , however , was unstable , and the dark side energies holding it together were in danger of losing their cohesion . Vaa ' s interest moved on to other projects , so he had his Aduban behemoth placed into suspended animation and inserted into a cave deep below the planet ' s surface . Death at Ruusan and legacy . A short time afterward , Vaa participated in Lord Kaan ' s Ruusan campaign , in which the Brotherhood of Darkness engaged in protracted battle with the Jedi Lord Hoth ' s Army of Light . Vaa was killed in the engagement , and was therefore unable to return to his suspended experiments . The New Sith Wars came to a conclusion shortly afterward with the Seventh Battle of Ruusan , in which the Brotherhood of Darkness was annihilated . Centuries afterward , colonists from the Sacred Way religion settled on Aduba - 3 , and later still the farming village of Onacra was founded close to the cave in which Vaa had stored his behemoth . A Force - sensitive among the villagers discovered the behemoth and passed down knowledge of its existence to his heirs . The creature eventually found its way into the Onacra folklore , and it was foretold that the monster would actually defend the village from harm . By the time of the Imperial Period , knowledge of the behemoth had fallen to a Force - sensitive known as the Old One . When the village fell under attack from the marauder Serji - X Arrogantus , he summoned the beast , and it wreaked havoc . It trampled both the Old One and Arrogantus to death , effectively fulfilling the prophecy that it would in a way defend Onacra . The behemoth was eventually destroyed by Corellian smuggler Han Solo , who was wielding a lightsaber , to which the creature was in fact highly vulnerable — which explained why it was driven berserk by the mere appearance of the weapon . It was profiled by Alliance to Restore the Republic historian Voren Na ' al two years later , who believed that Vaa ' s experiment resembled the earlier works of Sadow . Na ' al also believed that Vaa would have marveled at the resemblance , and the fact that he had come close to replicating the legendary creations of the earlier Sith Lord . Other commentary on Vaa ' s work was provided by Palpatine , a Sith Lord who ruled the galaxy during the time of the behemoth ' s reemergence . He provided an addendum to Vaa ' s entry in the Telos Holocron , having discovered a great deal more at Khar Delba and Khar Shian than the earlier Sith Lord . However , Palpatine acknowledged Vaa ' s findings , as the discovery of the temple on Dromund Kaas was a significant find . Personality and traits . A scholar , Lord Vaa aspired to revive the alchemical arts that had been in vogue during the reign of Naga Sadow . Even though his experiments were later called " wicked " and " abominations , " he found them to be of considerable interest and worthy of study . He was not one to dwell on projects , however , and was pragmatic enough to have promising endeavors preserved and stored for future reference . Vaa ' s personality was later speculated upon by Voren Na ' al , who supposed that the Sith Lord would behold his accomplishment of the Aduban behemoth with a sense of wonder and awe , had he lived to see the creature put to use against the Jedi . Vaa viewed himself as subordinate to Kaan , and fully believed that he could be considered a trusted servant of the Brotherhood . He held a particularly high opinion of Lord Kaan , and believed that his superior had a certain devotion and responsibility to the relics of the ancient Sith . He was also fiercely loyal to the Brotherhood of Darkness . Vaa found his work fascinating , and advised other Sith disciples to explore the same ancient Sith worlds he himself had traversed . He was particularly incensed by the actions of the Jedi , who had seen to the destruction and loss of significant portions of the Sith ' s history . For their transgressions , it was Vaa ' s hope that the Jedi would be destroyed . In spite of his passion for history and research , Vaa ' s work later came under criticism from another Sith Lord , Palpatine , who found that Vaa ' s records were incomplete and incomprehensive . Powers and abilities . Lord Vaa was considered one of the most powerful and " great " members of Kaan ' s Brotherhood of Darkness . He demonstrated the ability to mutate creatures through the power of the dark side , and although his experiments were unstable , they possessed considerable destructive power . He was able to condition and manipulate his creations to specifically target Jedi — the sworn enemies of the Sith — and his Aduban behemoth in particular proved to be a weapon of mass destruction . Behind the scenes . Seviss Vaa was first mentioned in the article " The Starhoppers of Aduba - 3 , " written by Pablo Hidalgo , Cory J . Herndon , and Michael Mikaelian . It was published in " Star Wars Gamer 4 " ( 2001 ) . The character was later referenced in " The New Essential Chronology " ( 2005 ) , and had his " in - universe writings " featured in " " ( 2007 ) , penned by Ryder Windham .