The Eternal Empire, also known colloquially as the Empire of Zakuul, was a government based on Zakuul led by Emperor Valkorion sometime before the Galactic War that Valkorion sought to use to reshape the galaxy. Valkorion used the Empire’s Eternal Fleet to battle both the Galactic Republic and reconstituted Sith Empire on multiple worlds.

Some time between the Ritual of Nathema and the Great Galactic War, Vitiate, the Sith Emperor, traveled into Wild Space in search of the Eternal Fleet, a supposedly-unstoppable fleet of warships commanded by sentient droids. His journey brought him to Zakuul, where he discovered a culture of superstitious Humans who worshiped the ruthless Old Gods. Taking on the identity of «Valkorion,» he unified the nomadic tribes of Zakuul into a civilization utterly devoted to him, creating the Eternal Empire, installing himself as their Immortal Emperor. He formed a new Force-user order called the Knights of Zakuul to serve as his special forces. A subgroup of the Knights, called Scions, used their visions to locate the Eternal Fleet, and enslave the sentient GEMINI droids to his Eternal Throne.