Duel on Coruscant ( Inter – Sith Wars Period ) Around seventy - five years before the beginning of the Great Galactic War , a lightsaber duel occurred on the Galactic Republic ' s capital world of Coruscant . The duel was fought between Jedi Master Barel Ovair and his former apprentice , the Nautolan Eison Gynt . After being abandoned by Ovair years before on Yavin 4 , Gynt had become possessed by the spirit of the long - dead Dark Lord of the Sith Naga Sadow . Sadow sought to kill Ovair , who was in fact an agent of the reformed Sith Empire and was operating within the Republic as a spy in preparation for the Sith ' s future invasion of the Republic . The possessed Gynt attacked Ovair on Coruscant but was defeated in the ensuing duel . In killing his former apprentice , Ovair also fulfilled a directive handed down to him by the Sith Emperor — to neutralize the spirits of past Sith in order to avoid complications when the Empire ' s invasion commenced . Prelude . Following the end of the Jedi Civil War and the resulting Dark Wars , the Galactic Republic enjoyed a period of peace and expansion . The Republic , however , was unaware of a growing threat in the Unknown Regions — the reformed Sith Empire , which was preparing itself for war . As part of his preparations for the war , the Sith Emperor dispatched agents of the Empire to infiltrate the Republic and begin destabilizing the government prior to the arrival of the Sith military . Among these agents was the Ovair family , which had been tasked with infiltrating the Jedi Order . As Jedi , the Ovairs traveled the galaxy , ostensibly to research locations strong in the dark side of the Force . In truth , they were working to neutralize the spirits of dead Sith Lords who might attempt to challenge the rule of the Sith Emperor upon his return to known space . In 3756 BBY , Jedi Master Barel Ovair and his Padawan , Eison Gynt , undertook a mission to Yavin 4 — the jungle moon that served as the final resting place of the ancient Dark Lord of the Sith Naga Sadow . Although Ovair intended to destroy Sadow ' s lingering spirit , his plan was side - railed when the Jedi were attacked by Sadow ' s surviving Massassi warriors and were forced to flee deep into Sadow ' s tomb . Ovair abandoned Gynt there and fled back to Coruscant , where he claimed that his apprentice had been killed . The duel . Several years after the events on Yavin 4 , Gynt returned to Coruscant . The young Jedi had been possessed by the dark spirit of Sadow and was committed to finding and killing his former Master . Garbed in the apparel of a Massassi warrior , the Nautolan attacked Ovair in broad daylight . A crowd formed around the two as they dueled , with Gynt attacking with his single green blade and Ovair defending himself with his purple double - bladed lightsaber . Despite the dark powers granted to Gynt by Sadow , Ovair was able to strike down his apprentice by cutting him across his torso . Gynt ' s death also resulted in the neutralization of Sadow ' s spirit . Aftermath . Ovair ' s victory was lauded by the Jedi , and the Jedi High Council assumed that despite the tragedy that had befallen young Gynt , the situation had passed , and that there was no reason for further concern . Ovair continued in his capacity as a Jedi Master , and around seventy - five years later , the Sith invaded the Republic . It wasn ' t until after the conclusion of the resulting Great Galactic War that inquiries were made into the events surrounding the duel . It was then that Jedi historian Gnost - Dural discovered the Ovair family heritage and their role in the preparation for the invasion by the Sith Empire . Satele Shan , the Jedi Grand Master of the era , concurred with Gnost - Dural ' s research and included notes on the duel on Coruscant in a wartime journal submitted to the Jedi Archives on Tython . Behind the scenes . The duel on Coruscant was first seen in the seventh entry of the " Galactic Timeline " , a series of online video entries created to provide background story to the LucasArts / BioWare video game , " " . The entry , titled " " , is available on " The Old Republic " official website . It is narrated by Jedi Master Gnost - Dural , whose voice is provided by actor Lance Henriksen . The duel was again mentioned and pictured in " The Journal of Master Gnost - Dural " , a book released within collector ' s editions of " " . " Peace for the Republic " presents a continuity disparity regarding the destruction of Naga Sadow ' s spirit . While " The Complete Star Wars Encyclopedia " claims that the Dark Lord Freedon Nadd destroyed Sadow ' s spirit in 4400 BBY , the " Timeline " states that the destruction instead took place during this duel .