Harrower assassins, often simply called Harrowers, represented horrifying Sithspawn monstrosities. These creatures were the result of Sith sorcerer [Fulminiss]'s twisted experiments, transforming Human Force-sensitives into these abominations. In the era of the Cold War, the Sith Emperor maintained a contingent of Harrowers as sentinels on his space station. Towards the Cold War's conclusion, three of these Harrowers were dispatched with the mission to eliminate the Jedi Jomar Chul. This assassination attempt was triggered by Jomar Chul's acquisition of cartographic information that precisely identified the Emperor's space station's coordinates. While the Harrowers did manage to bring down Jomar's vessel above Tatooine, their mission ended in failure. They were confronted and ultimately destroyed at the crash site by the Hero of Tython.