The Fortis are fearsome raiders from the icy fjords and frozen tundras of the North. They are covered in red fur and bushy beards and wear heavy chainmail armor. Keen to prove themselves in battle and bring home glorious spoils of war, the Fortis sail South on their massive longships.

The Fortis are the only people of the Permia world to have mastered iron smelting: the Aeros and the Cibus use bronze and copper. The gigantic forges of the Fortis are powered by molten magma that pours straight from the heart of the world. The Fortis believe this to be a gift from their god, simply known as the Fire God.