The Thakolarivaj, or the "Great Orion Empire", was a series of imperial states that existed early in Orion history. It consisted of the First through to the Twelfth Orion Empires. This may be related to the Empire of Orion mentioned in TAS novelization: Yesteryear. The FASA RPG - The Orions module: Book of Common Knowledge presented an alternative Orion Empire.