Servant Four was a female Sith Pureblood who existed during the time of the third Galactic War. She held the position of a Servant within the Hand of the Empire.
In the year 3626 BBY, Servant Four, along with several other Servants belonging to the Emperor's Hand, infiltrated the ship that Kira Carsen and Scourge were using. Their purpose was to safeguard Satele Shan and her pupils, who had been affected by Tenebrae's curse, and to facilitate the return of their master, Tenebrae. Scions of Zakuul, headed by Minazar, attempted to impede them, but the Servants overwhelmed them due to their superior numbers. Servant Four personally eliminated Minazar, before subsequently engaging the Alliance Commander in combat. It was during this conflict that Servant Four met her demise.