Osi Sobeck was a Phindian male who served the Confederacy of Independent Systems as a commandant 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.