Galen Marek ' s lightsaber Galen Marek ' s lightsaber was the Sith weapon of the Dark Lord Darth Vader ' s secret apprentice , a Force - sensitive assassin codenamed Starkiller . The apprentice ' s lightsaber was of a skeletal and utilitarian design . Intended for both training and combat purposes , it served multiple purposes such as the many sparring matches between the apprentice and his holodroid PROXY , as well as meditation sessions in which he concentrated on telekinetically reassembling his lightsaber . As his training neared completion by 3 BBY , the apprentice was dispatched on a series of tasks to assassinate three fugitive Jedi Masters — Rahm Kota , Kazdan Paratus and Shaak Ti . Upon the completion of his final trials , Vader betrayed his apprentice on the orders of Emperor Palpatine , and cast him out into space . As a result , Marek ' s lightsaber was lost in the vacuum of space , though he was ultimately saved from death by his Sith Master in order to be redeployed on several new missions that would lead to the formation of the Rebel Alliance . Due to the loss of his apprentice ' s lightsaber , Darth Vader provided Marek with another lightsaber as a replacement . Specifications . Galen Marek ’ s first lightsaber appeared to be based on the design utilized by Darth Vader , featuring an emitter shroud and a mostly solid casing . However , rather than follow the over - sized , bulky design of his master ’ s weapon , Marek opted for a considerably more skeletal make . His weapon featured an exposed crystal chamber , and rather than include a handgrip , the whole of the weapon was sheathed in somewhat tarnished looking bare - metal . The blade utilized a set of red crystals supplied by Vader . History . Like much of Galen Marek ' s training , the circumstances of the lightsabers creation were brutal . As a child , Marek once ordered PROXY to chain him up and not give him food or water until he could take apart and rebuild the lightsaber using only the Force . He did not succeed , and PROXY was forced to release him from his bonds . While this early effort was a failure , Marek did eventually succeed in crafting a lightsaber , and it saw frequent use in training duels with his droid , PROXY , and even with Vader himself . One such match lasted for hours , with Vader simply holding off Marek until the apprentice collapsed from exhaustion . At one point , Marek was sent on a mission to Yuzzem homeworld Ragna III , where he discovered that Vader had sabotaged the lightsaber , forcing Marek to fight off the Yuzzem with his Force powers . Marek wielded the lightsaber against a Jedi for the first time when he was sent to eliminate Rahm Kota , who was attacking an Imperial shipyard above Nar Shaddaa . Carving his way through the facility , killing Imperials and Kota ' s men alike , as per Vader ' s orders to leave no witnesses , Marek finally engaged Kota within the command center of the shipyard . After a heated duel , Marek bested Kota by blinding him with his own blade , pushing it into his face during a blade - lock . The lightsaber would subsequently see use against Kazdan Paratus on Raxus Prime , though Marek would be forced to best Paratus with his Force abilities , due to Paratus ' lightsaber skills . On his way to reporting back to Vader , Marek telekinetically dismantled and reassembled his lightsaber while in meditation , though he was interrupted by a communication from Vader , breaking his concentration and scattering the lightsaber components across the floor of his ship ' s onboard training room . Marek was ordered to travel to Felucia and eliminate Shaak Ti , one of the last surviving members of the Jedi Council . Confronting Ti , Marek only narrowly managed to defeat her , impaling her with his own blade while only barely blocking her attack with telekinesis . Returning to Vader to report his success , Marek was betrayed , his existence having been found out by Emperor Palpatine . On Palpatine ' s orders , Marek was thrown into the vacuum of space , and lost the lightsaber to the void . Galen Marek ' s near dead body was quickly retrieved , and after a recovery period , he resumed his service to Vader , wielding Kota ' s lightsaber as a replacement for his original weapon . Behind the scenes . The loss of Galen Marek ' s lightsaber is a plot element exclusive to the novelization of " " , with the various game versions and the depicting Marek continuing to use his original lightsaber , albeit with a blue blade . However , due to the inconsistencies between the various game versions of the story on numerous plot points , the novelization is generally accepted as the final word , so the loss of Marek ' s lightsaber is considered part of the canon .