In Norse mythology, the Draugr (also spelled Draugar) were the reanimated corpses of dead vikings. It was believed the corporeal remains would become animated again to viciously guard the treasures buried with the body (Vikings tended to bury weapons and various artifacts of wealth with the dead). They have incredible strength and were immune to conventional weapons. They had to be defeated with raw strength. They could also rise again if defeated. The only way to destroy a Draugr was to cut off its head and burn its body, then dumping the ashes in the sea. They can occasionally leave the burial site and attack settlements of the living. Their complexion was said to be “death-blue” or “corpse-pale”. This may explain why the Draugar in Final Fantasy XI have a midnight blue color.