In demonology, Glasya-Labolas is a mighty President (and Earl to other authors) of Hell who commands thirty-six legions of demons.
He teaches all arts and sciences, in an instant, tells all things past and to come, and is the author and captain of manslaughter and bloodshed. He causes the love of both friends and foes, if desired, and can make a man invisible.
He is depicted as a dog with the wings of a griffin.
Other spellings: Caacrinolaas, Caassimolar, Classyalabolas, Glassia-labolis, Glasya Labolas.