Helion Legion

The Helion Legion is a Loyalist Space Marine Chapter of Ultramarines lineage created during an unknown Founding. It is a fleet-based Chapter with no known homeworld. Raised as they were from the vaunted lineage of Roboute Guilliman, the Helion Legion was founded to provide guardians for the furthest-flung Imperial worlds at the very edge of the galaxy. Due to this isolation, the Helion Legion is often forced to confront those Imperial worlds who attempt to break away from Terra altogether as well as the omnipresent threat of Orks. Many fringe worlds have also begun to display signs of Necron awakenings as well.