The Dread Masters are a group of six powerful Sith Lords, who have great powers with the dark side of the Force. They can use their powers to terrify entire armies. They were also favored servants to the Sith Emperor. During the First Great War, the Dread Masters were captured by the Republic, but they were unable to turn or kill them. Instead, the Republic imprisoned them on Belsavis. At the beginning of the Second Great War, the Empire discovered Belsavis and freed the Dread Masters. Shortly after their release, they went rogue, and began to create their own empire of fear and terror, thus becoming a dreadful enemy for both the Republic and the Empire.