Xorn was once known as the Guardian of the Clouds, but after he defied the Great Will, he was cast out as a Fell Beast. His appearance now distorted from it's once natural beauty, the wyvern causes the creation of the demons from within his prison, another dimension known simply as the Darkness. The Fell Beast awaits for the day one of his grandchildren assemble his armor (his source of power) and unite their powers together within one of their bodies as his new vesel.