Why do demons seek to possess the living? History claims they are malevolent spirits, the first children of the Maker, angry at their creator for turning from them and jealous of those creations he considered superior. They stare across the Veil at the living and do not understand what they see, yet they know they crave it. They desire life, they pull the living across the Veil when they sleep and prey on their psyche with nightmares. Whenever they can, they cross the Veil into our world to possess it outright. * Codex entry: The Maker's First Children