Casael: A demon whose name may be a variant of Carsiel. This spelling of the name appears in the Ars Theurgia in conjunction with the infernal prince Dorochiel. Casael is said to serve in the capacity of chief duke, with four hundred lesser spirits beneath him. He is tied to the hours of the second half of the day, manifesting between noon and dusk. His direction is west.
SOURCE:
The Dictionary of Demons written by Michelle Belanger