Katoran

The Katorans, sometimes referred to as the Slave Masters of Akator, were a species of the same racial stock as the Duros, and Nemiodians, and were among the most powerful races in galactic history, creating an empire rivaling the empires of the Rataka, Sith, and Palpatine.

Their homeworld was located deep in the Unknown Regions in a medium sized dwarf galaxy known as the Kator Star Cluster, which they controlled. The Katorans were linked and traded with the Yuuzhan Vong, acquiring much Yuuzhan Vong technology for the slave armies of the Katorans.