The Psikers are an ancient race, stemming back to when Earth was first expanding and encountered their first alien race. The alien empire quickly threatened the fledgling Human Galactic Empire. In order to combat this new threat, humanity created a new species.

This species was an adherent abomination of mechanical and heavily genetically modified flesh. Their brains were more artificial intelligence than living tissue. This new species was created to help humanity by analyzing and then predicting the alien threats' next moves.

This worked too well, and once the alien threat was abolished, the Psikers were sent into hibernation for hundreds of years. After the Empire's golden age of expansion, however, they were re-awakened and sent to the world of Illusuar in the outer Empire to help quell some of the rebellious systems.

Once again, they proved their worth, quickly taking control over systems. Because of this, they were granted the luxury of ruling over the star cluster they had conquered. With this freedom, the Psikers went on to improve their species' intelligence, warping their appearance and culture into something far alien to humanity.

They predicted the Great Collapse and were prepared for it. Theirs was one of the first empires to emerge from it. They immediately put into action hundreds of years-old plans for the Fleet Final: alast-ditch effort to save the galaxy from impending doom, though not even they know what was the cause of the threat.

Soon, however, the Psiker leadership fractured as they grew jealous of each other. Many sub-factions of the Psikers now claim the title of Fleet Final as they war amongst each other for power and the glory of saving a galaxy, a prophecy they will never fulfill.