When the primarchs were scattered to the ends of the galaxy, Perturabo landed on a planet named Olympia. He was discovered climbing the mountains below the city state of Lochos. The guards, having realised this was no normal child, brought him before the Dammekos, the Tyrant of Lochos. Dammekos was intrigued by the child and brought him into his house and treated him as family. Supposedly, Perturabo never trusted the Olympians and refused to return any affection given by Dammekos. Dammekos spent plenty of time with his new son, but never got anything in return. Many saw Perturabo as a cold and brooding child but when you consider that he had been thrown onto a world with no idea of his origins or purpose, this is perhaps a little harsh.

When the Emperor arrived Perturabo immediately submitted himself to the Emperor's mercy and ousted the Tyrant of Lochus. Dammekos is said to have spent his remaining few years gathering forces to attempt to retake his power. He failed but created a current of unrest which would be used later.