Darth Phobos Darth Phobos was a female Theelin Sith Lord who was born on the planet Korriban and lived thousands of years before the outbreak of the Clone Wars . Cunning and manipulative , Phobos slew many of her Sith brethren in a bid for power , and the rest turned against her and attempted to kill her . Phobos survived the attempt on her life and assembled a fanatical cult that worshiped her , using the cultists to strike against Sith and Jedi alike and earning the nickname " The Hidden Fear " among the Sith . Eventually , a joint force of Jedi and Sith killed Phobos , but her cult continued to live on until the Fourth Great Schism . Tales of Phobos ' survival became an urban legend , and her image was incorporated into the Jedi Trials as a simulation for the " Trial of Insight . " In 3 BBY , that simulation battled Dark Lord of the Sith Darth Vader ' s secret apprentice , Starkiller , and was defeated . Biography . The Hidden Fear . Darth Phobos was a female Theelin Sith Lord born on the ancestral Sith burial - world of Korriban eons before the Clone Wars . Phobos was a manipulative individual who developed her mental powers , using the Force to control the minds of the weak and forcing them to obey her commands . Phobos murdered many of her rivals in her quest for power . Eventually , the Sith turned on her and destroyed her starship while it was in low - orbit over Korriban . Phobos was presumed dead , but she had in fact survived and gone into hiding . During the course of the several decades that followed , Phobos assembled a fanatical cult devoted exclusively to her . She dispatched her acolytes across the galaxy to recruit others and to assassinate both Jedi and Sith leaders indiscriminately . Eventually , the Sith began to suspect that Phobos had somehow returned from the dead and began to refer to her as " The Hidden Fear . " Both factions recognized Phobos and her cult as a major threat to the galaxy and grudgingly joined forces to stop her . Phobos was eventually killed in a battle against Jedi and Sith warriors , but her cult remained active for a long time afterward , disappearing only around the onset of the New Sith Wars in 2000 BBY . Legacy . Rumors of Phobos ' survival persisted for many centuries , and " The Hidden Fear " eventually became a subject of ghost stories that Jedi Padawans told each other . A visage of Darth Phobos also became a key part of the Jedi Trials that Padawans took in order to become full - fledged Jedi Knights . Appearing inside the Jedi Temple on the galactic capital of Coruscant , the Phobos simulation constituted the " Trial of Insight , " meant to challenge Padawans to confront their deepest fears and to teach them to see clearly through deception . The Phobos simulation remained active even after in 19 BBY , when the Jedi Temple was ransacked and left in ruins . Around 3 BBY , Dark Lord of the Sith Darth Vader ' s secret apprentice , Starkiller , visited the Jedi Temple as part of his Sith training . When he reached the lower Archives level of the abandoned Temple , Darth Phobos ' simulacrum confronted him , appearing as Imperial Captain Juno Eclipse , one of the few people for whom Starkiller cared , and pretending to be in pain . When Starkiller approached her , Phobos attacked him , armed with a double - bladed lightsaber . During their duel , Phobos frequently duplicated and changed her appearance to that of Eclipse , sensing that the Captain ' s death was the thing Starkiller feared the most and that he would hesitate to attack her . Nevertheless , Starkiller defeated Phobos and , after hurling her throughout the Archives with the Force , was prepared to strike a final blow . Phobos changed her appearance to that of Eclipse for the final time , begging the Sith apprentice to spare her . However , Starkiller did not fall for the deception and stabbed Phobos through the back with his lightsaber , ending the simulation . By 1 ABY , the technical readout of the double - bladed lightsaber that Phobos had used during her life came into possession of the Alliance to Restore the Republic . Alliance Staff Sergeant Levardio , stationed on the Zephyr Base on Rori , the moon of the planet Naboo , offered the readout for sale to Rebels who performed valiantly on the battlefields of the Galactic Civil War , allowing the buyer to create his or her own replica of Phobos ' lightsaber after acquiring all the necessary resources . Personality and traits . Darth Phobos was a green - skinned Theelin female with blue hair and yellow eyes . She was talented in manipulation of other beings and did not hesitate to kill those who stood in her way , which eventually turned her fellow Sith against her . Seeking vengeance after the attempt on her life , she assembled a fanatical cult and slaughtered many Jedi and Sith alike . Although the Sith initially believed her to be dead , they began to suspect Phobos ' hand in the string of murders that followed and dubbed her " The Hidden Fear . " After her legitimate death , rumors of Phobos ' survival persisted for centuries , and she became a subject of ghost stories among Jedi Padawans . The simulation of Phobos that fought against Starkiller was intent on discovering his fear and used all of her mental powers to confuse the Sith apprentice . Phobos discovered that Starkiller ' s innermost fear was the loss of Captain Eclipse and sensed that there was only one person of whom the Sith apprentice was truly afraid . Powers and abilities . Darth Phobos exhibited powerful mental powers that she could use to manipulate the minds of the weak and force them to do her bidding . The Phobos simulation was able to sense her opponent ' s deepest fears and use them against the assailant . She fed on phobias , and was strengthened by those of her opponents . During her duel with Starkiller , the simulation of Phobos fooled him into seeing more than one version of herself and clouded his vision , making Starkiller temporarily lose all sense of direction . She also employed a powerful Force lightning volley against the aspiring Sith and was adept in various forms of telekinesis , including Force Repulse and Saber Throw . The simulacrum was proficient with her double - bladed lightsaber . She occasionally used Force speed and jump to increase her agility , and was capable of quickly teleport ing from one point to another . Behind the scenes . Darth Phobos first appeared in the 2008 video game , voiced by Kari Wahlgren . Phobos was featured in one of the Jedi Temple levels exclusive to the PlayStation 2 , PlayStation Portable , and Nintendo Wii versions of the game , which were developed by Krome Studios . In " The Force Unleashed " , entering " HIDDENFEAR " as a cheat code enables Phobos as a playable character skin . In addition , Phobos is a playable character in the Wii and PSP versions ' respective duel modes , although she has to be unlocked first . According to , Darth Phobos ' name is inspired by the word " . " " The Force Unleashed " left the exact nature of Phobos ' appearance in the game ambiguous . The only implication , provided in the game ' s databank entry for " Jedi Trials , " was that the simulacrum was projected with the Force . In 2010 , the reference book presented another possible explanation . The book featured a description of a holographic projector installed inside the Jedi Temple after the Seventh Battle of Ruusan for use during the Jedi Trials . The projector was capable of creating holographic simulations of long - dead dark side " monsters . " The book ' s author , Daniel Wallace , later confirmed in his blog that he included this line as a reference to Darth Phobos and Darth Desolous — another Sith simulation from " The Force Unleashed " — but he did not spell their names out in order to avoid any potential timeline conflict .