THX, potentially a reference to sex, is the prefix associated with the protagonist in the 1971 film THX 1138 by Walter Murch and George Lucas; it could also pertain to the subsequent entries:
- In the Citadel Challenge, Clone commando Colt commanded the evaluation of Domino Squad utilizing THX version 1138.
- A landspeeder known as THX 1138.
- A droid model referred to as THX servant droid.
- THX Ultrasound Speaker, of which 1138 units provided music at Hologram Fun World.
- Spaceport THX1138, a terminal location for Star Tours and various travel agencies. An altercation, Raid at Spaceport THX1138, occurred at this location.
- Docking bay TH X-11-38, a docking bay located in the space city of New Tayana.
- THX-1138', also identified as TK-421, a stormtrooper.
- Trihexalophine1138, a bioweapon utilized by the Separatist faction that devastated Honoghr.
- During the Citadel Challenge, Clone commando Colt instructed the assessment of Domino Squad with THX version 1138.
- Talus Haroon 10 -11-38 served as the authorization code for docking on the Salvation.