Twenty thousand years ago, three major powers existed in the galaxy: the newly founded Galactic Republic, the expansionist Hutt Empire, and the technologically advanced, isolated civilization known as the Tion Hegemony. After splintering into several states upon the death of its ancient tyrant, Xim the Despot, the Tion Hegemony attempted to conquer the Republic but was ultimately defeated. However, the noble House of Tion survived and administers the Tion Cluster to this day.
Republic elitists dismiss the Tion Hegemony as a rich backwater dreaming of its glory days, but the Tionese people are proud of their heritage and royal family. Several worlds in the Cluster still speak the Tionese language as well as Galactic Basic. Traces of Xim the Despot's rule remain: Tionese starship technology is descended from designs that Xim commissioned, and rumors say that Xim's secret police, the GenoHaradan, still exists in some form today.