Sa Cuis was a Human male Dark Jedi and an Emperor's Hand. During the early months of his master Palpatine's Galactic Empire, Cuis commanded the Imperial Commando Special Unit, a unit tasked with hunting down Jedi and deserters. Due to Cuis's loyalty, Palpatine sent him on a mission to Vohai in 19 BBY. Cuis's goal was to attempt to kill Darth Vader, Palpatine's apprentice. Though Palpatine knew Cuis would fail, in reality he intended the mission as nothing more than a test for Vader. Like the Emperor predicted, Cuis was killed by the Sith Lord.