Darth Desolous Darth Desolous , born circa 3522 BBY , was a male Pau ' an Jedi Master prior to becoming a Sith Lord . After he studied Sith teachings and fell to the dark side of the Force , he was expelled from the Jedi Order . As the new Dark Lord of the Sith , Desolous swore revenge on the Jedi and assembled an army of Pau ' ans , whom he trained in martial arts and used in his fight against the Order . Desolous and his men slew almost two thousand Jedi , until they were crushed by the Jedi Order during a battle on the planet Yaga Minor . During the battle , Desolous was killed . A simulacrum of Darth Desolous was later incorporated into the Jedi Temple ' s Trial of Skill program . In 3 BBY , the program activated itself and fought Sith Lord Darth Vader ' s secret apprentice , Starkiller , and was defeated by him . Biography . The Master ' s fall . The man who would eventually become Darth Desolous was originally a revered Pau ' an male Jedi Master born around 3522 BBY . A formidable warrior who craved battle , the Master studied Sith teachings and fell to the dark side of the Force , which led to his expulsion from the Jedi Order . Enraged , the individual became the Sith Lord " Darth Desolous " and vowed to have his revenge on the Jedi . Effectively , Desolous became the Dark Lord of the Sith of that time period . Soon enough , Desolous began training an army of Pau ' ans in his own style of martial arts , which combined Cortosis shield s and melee weapons . He eventually rallied his army in a series of ambushes against Jedi Knights across the galaxy that led to the slaughter of nearly two thousand Jedi . With each victory Desolous grew more bold , but also more reckless and overconfident . Such carelessness ultimately led to his downfall , when Desolous and his army attacked a small force of Jedi on the planet Yaga Minor . Those Jedi , however , were simply acting as bait meant to draw Desolous into a tactically disadvantageous position . When Desolous struck at Yaga Minor , a large Jedi fleet emerged from hyperspace and effectively prevented the Sith Lord from retreating . Desolous ' s Pau ' ans were outnumbered and eventually killed , and the Sith Lord himself was struck down as well , although it allegedly required the entire Jedi Council to do so . Legacy . Darth Desolous ' s legacy far outlived his death . Although his birth name had been lost to history , his Sith name became synonymous with hatred and anger . Because of that , Desolous ' s visage was eventually incorporated into the Jedi Trials program for Padawans who were considered for promotion to the rank of Jedi Knight . The life - like image of Desolous manifested as a personification of a Padawan ' s own personal weaknesses and , as part of the " Trial of Skill , " was meant to help the students achieve control over their baseline raw emotions . Appearing in the Coruscant Jedi Temple ' s trial chamber , the simulacrum was fully aware of Desolous ' s physical death , and it boasted that it required the powers of the entire Jedi Council to kill him . Even after the Jedi Temple was ravaged in 19 BBY during , the simulacrum of Desolous remained active , waiting for another opponent to engage in battle . That battle finally occurred around 3 BBY , when Dark Lord of the Sith Darth Vader sent his secret apprentice , Starkiller , to the Jedi Temple to continue his training . Once Starkiller entered the Trials Chamber , Desolous , armed with his signature cortosis shield and a red - bladed lightsaber , struck him with a bolt of red Force lightning . The two engaged in a duel , with Desolous constantly taunting Starkiller and bragging about the murders he had committed while he had been alive . However , Starkiller defeated the program when he threw the ancient Sith Lord on the chamber ' s floor and toppled a statue onto his body . Receiving new orders from Vader , Starkiller then left the Jedi Temple and embarked on a new mission . Personality and traits . Darth Desolous was a gray - skinned Pau ' an with black eyes . Before he fell to the dark side , Desolous was a respected Jedi Master . However , he was plagued by a lust for battle , which led to his fall . After his expulsion from the Jedi Order , Desolous became enraged and vengeful , remorselessly slaughtering numerous Jedi Knights in his bloodthirsty quest . With each killing , Desolous became increasingly overconfident , and in his arrogance , failed to perceive the Jedi trap on Yaga Minor until it was too late . Desolous ' birth name was eventually forgotten , and his only legacy was one of hatred and rage . Desolous ' self - confidence was well represented by the Jedi Temple training hologram based on him . The simulation was evidently self - aware , believing that it was more powerful in death than Desolous had been in life , and voiced the intention to claim leadership of the Sith once again . The artificial manifestation admitted that Starkiller was powerful in the dark side , but still considered the apprentice no match for him . Powers and abilities . Darth Desolous was a fierce warrior who developed his own fighting style that favored the usage of a cortosis shield along with a melee weapon . The shield was used to block an opponent ' s attack — even a lightsaber strike — leaving the enemy open to counterattack . Desolous was powerful enough to face and murder many Jedi , and his simulacrum later claimed that the Sith Lord had been taken down only by the combined strength of the Jedi Council members . The Desolous simulacrum employed a cortosis shield and a red - bladed lightsaber , and complemented their use with powers of the Force , including lightning , rage , and telekinesis . Behind the scenes . The character of Darth Desolous was first mentioned on Holocron continuity database keeper Leland Chee ' s blog in 2006 , where his name was said to be inspired by the word " desolate . " No further information was revealed about him until 2008 , which saw the release of . Darth Desolous , appearing as a Jedi simulation , was featured in one of the Jedi Temple levels exclusive to the Krome Studios - developed PlayStation 2 , PlayStation Portable , and Nintendo Wii versions of the game , wherein he was voiced by Kristoffer Tabori . In those versions of " The Force Unleashed " , entering " PAUAN " as a cheat code enables Darth Desolous as a playable character skin . Desolous is also an unlockable character in the PSP version ' s " Force Duel " mode . The exact nature of Desolous ' s appearance in " The Force Unleashed " is rather ambiguous . However , the game ' s databank entry for Jedi Trials implies that the simulacrum is projected with the Force , stating that , " Some of the most common trials involved battles against fearsome Force constructs lurking deep within the bowels of the Jedi Temple . " On the other hand , , a 2010 reference book , describes a holographic projector installed inside the Jedi Temple after the final battle on the planet Ruusan during the New Sith Wars . According to the book , the projector was used during the Jedi Trials by creating simulations of long - dead dark side " monsters . " The book ' s author , Daniel Wallace , later confirmed in his blog that he intended this line to reference Darth Desolous and Darth Phobos — another Sith simulation from " The Force Unleashed " — but he withheld from spelling their names out in order to avoid any potential timeline conflict .