Maseriel ("deliver") is a demon among the 31 Aerial Spirits of Solomon. Maseriel serves Caspiel and rules in the west. He has a great number of servants both day and night, each of whom has 30 servants. Maseriel’s 12 major daytime dukes are Mahue, Roriel, Earviel, Zeriel, Atniel, Vessur, Azimel, Chasor, Patiel, Assuel, Aliel, and Espoel. The 12 major nighttime dukes are Arach, Maras, Noguiel, Saemiet, Amoyr, Bachile, Baros, Ellet, Earos, Rabiel, Atriel, and Salvor.