Osi Sobeck Osi Sobeck was a Phindian male who served the Confederacy of Independent Systems during the Clone Wars . As warden of the Citadel on the planet Lola Sayu , Sobeck was in command of a prison designed to hold fallen Jedi . During the Battle of Lola Sayu , he tried to kill Captain Wilhuff Tarkin of the Galactic Republic , but was killed by Padawan Ahsoka Tano after she noticed Sobeck threatening the Republic officer ' s life . Biography . Over 1 year into the Clone Wars , Separatist forces captured Jedi General Even Piell , who was returning to Coruscant from a mission . Piell and some of his men were imprisoned in the Citadel to be handled by Sobeck . Count Dooku ordered Sobeck to get valuable information about Hyperspace coordinates known as the Nexus Route from Piell and his Captain Wilhuff Tarkin , as each possessed half of the information . The Jedi Order and Galactic Republic launched a mission to rescue Piell and his men , using a separatist shuttle and reprogrammed pilot droids to get a rescue team , led by Jedi Generals Anakin Skywalker and Obi - Wan Kenobi , on Lola Sayu . Sobeck suspected that the Jedi would attempt to rescue Piell and had his T - series tactical droid second in command , K2 - B4 , scan the shuttle for life forms when it asked permission to land on the planet . The scanners didn ' t detect any life , as the rescue team had been frozen in carbonite , and K2 - B4 gave permission to land . Sobeck grew suspicious when the shuttle didn ' t arrive on the landing platform . When a clone trooper accidentally activated an electro mine , Sobeck was sure a rescue team had entered the Citadel and ordered the facility on high alert . The Jedi managed to rescue Piell from the interrogation cell but Sobeck activated a super magnet , that pulled the group ' s weapons to it , as well as Anakin , who had a cybernetic arm , and had them surrounded by BX - series droid commando s . Anakin , however , managed to destroy the magnet , allowing his fellows to take their weapons back and destroy the droids , much to Sobeck ' s frustration . The team went on to retrieve Tarkin and Piell ' s other men from their cell and split up into two groups . The first group , led by Piell and Kenobi , used thermal denotators to create some explosions on the upper levels of the prison as a diversion , wreaking havoc in the facility , while the second group , led by Tarkin , Skywalker and his padawan Ahsoka Tano , escaped the building on the lower levels into a series of tunnels . Count Dooku contacted Sobeck after learning of the escape , and Sobeck assured him that the situation was under control and that he would soon have the information . Meanwhile , Skywalker had his astromech droid R2 - D2 , who was in charge of the shuttle and the reprogrammed battle droids , landed their shuttle on the Citadel ' s landing platform so he could pick up Kenobi ' s group , who were still in the building . Kenobi ' s group , however , had been captured by Sobeck ' s troops and brought before Sobeck , who demanded Piell ' s half of the information , executing a clone and threatening to kill the rest if he refused to speak . Before he could kill a second clone , K2 - B4 informed him that Skywalker ' s group had been located , and he ordered the prisoners be taken to the interrogation level for torture while he focused on Skywalker ' s group . R2 - D2 ' s droids managed to take over Kenobi ' s group from the security droids escorting them and a droid soon reported that the prisoners had not arrived at the interrogation level , angering Sobeck . K2 - B4 told him that Count Dooku wanted to speak him , but Sobeck ignored this and ordered all units to the landing platform , as the shuttle was the prisoner ' s only chance to escape the planet . When Kenobi ' s group tried to board the shuttle by acting as prisoners of the reprogrammed droids , K2 - B4 informed the units on the platform of the deception . This resulted in a battle on the landing platform . Skywalker ' s group soon arrived , but a commando droid managed to blow up the shuttle , destroying the team ' s only chance of escape . The team retreated into the lower caves of Lola Sayu . Sobeck was almost certain that the Republic would launch a second mission to evacuate the prisoners , and had K2 - B4 command the blockade fleet while he focussed on recapturing the team . Count Dooku contacted him again , demanding the truth about the prisoners . Sobeck told Dooku that his troops would soon capture them now that their ship was destroyed , to which Dooku replied that Sobeck ' s honesty was the only thing keeping him alive . Sobeck released a pack of Anooba s to track down the prisoners , which killed Piell after he had passed on his half of the information to Ahsoka . When a droid reported that the Anoobas had located the prisoners , Sobeck personally commanded a squad of droids on STAP ' s to deal with them . Sobeck and his party found the group on a small island and engaged them . Without success , as Anakin and Obi - Wan destroyed most of Sobeck ' s squad , while R2 - D2 created a cloud of smoke , blinding Sobeck , which allowed ARC trooper Fives to shoot his STAP down . Tarkin tried to shoot Sobeck but missed , and Sobeck grabbed his throat . Realizing he could never have the information , Sobeck lifted Tarkin and attempted to throw him into the lava , so that no one would have it . Ahsoka , however , spotted this and impaled Sobeck through the back with one of her lightsaber s , killing him . Not long thereafter , the Republic broke through the blockade of Lola Sayu and evacuated the prisoners .