Marioch is a frontier world in the Adrantis Nebula of the Calixis Sector. In the time of the Angevin Crusade, Saint Drusus slew the thrice headed serpent of Marioch. Legends say that the wild frontier world was once plagued by a vast flying serpent, held aloft by great external lungs and scaly wings. As large as an Imperial Cruiser, the beast devoured whole towns in a single gulp and its hide was thick enough to turn even lascannon shot. Drusus eventually killed the creature by leading a platoon of soldiers into its maw while it slept and hacking his way to the creature’s heart to deliver the killing blow.