Thix, responsible for the security of sector 1138, served as a guard within Prince Xizor's Palace situated on Coruscant. His life came to an end when Luke Skywalker, accompanied by his allies, entered the subbasement while attempting to locate Leia Organa.
The designation of Thix, along with the sector he oversaw, serve as direct allusions to THX-1138, a film directed by George Lucas.