The Empire of Japrael was a Sith state established by the Dark Lord of the Sith Darth Revan, under his alter-ego of Harrison Hord, composed of many worlds across the galaxy. The Sith nature of this empire was kept hidden from the galaxy, as Revan required the presence of Onderon, Taris and the other worlds in the senate of the Galactic Republic. The name of the empire comes from the Japrael system, where Onderon is located.