According to this text, Demoriel is the primary Emperor of the North, and he rules in this point of the compass with a retinue of four hundred great dukes and six hundred lesser dukes. Demoriel can be called any time in the day or night. Those that would conjure him are advised to retire to a private and out-of-the-way place so that their experiments with his manifestation will remain undisturbed.
He is said to possess an airy nature, and thus he is best viewed by the naked human eye through the medium of a crystal stone or scrying glass.
Hunter 
Hunter