Los Dor was a Sith Colonel during the Great Hyperspace War. He served under Saes Rrogon aboard the Sith dreadnaught Harbinger, and served as a spy for Naga Sadow, keeping tabs on Rrogon's actions and worthiness to be a Sith. He perished when Drev Hassin crashed his Jedi Infiltrator into the bridge of Harbinger.