Tarnux, a Sith Lord of the male persuasion, functioned as an Executioner for the Sith Empire circa 3627 BBY. Under the direction of his master, Darth Shaar, he was positioned on Mek-Sha, where he met his end in battle against forces of the Galactic Republic.
Instead of a conventional lightsaber, Tarnux employed a red-bladed battlestaff as his weapon of choice. Furthermore, he demonstrated the capacity to unleash Force Wave to overwhelm adversaries. His abilities also included using the Force to leap vast expanses.