from Collin de Plancy's Dictionnaire Infernal
Gaap's seal
In demonology, Gaap is a mighty Prince and Great President of Jinnestan, commanding sixty-six legions of demons. He is the king and prince of the southern region of Jinnestan and Earth, and according to the Pseudomonarchia Daemonum (False Monarchy of the Demons) the king of the western region and as mighty as Beleth, but for both he is the guide of the four kings (the others being Ziminiar, Corson and Amaymon, although some translations of The Lesser Key of Solomon consider Belial, Beleth, Asmodai and Gaap, not giving detail on the cardinal point they rule). He is said to be better conjured to appear when the Sun is in a southern zodiacal sign.
Gaap specifically controls the element of water and reigns over the Water Elementals or the 'water demons'.
Gaap teaches Philosophy and all liberal sciences, can cause love or hate and make men insensible and invisible, deliver familiars out of the custody of other magicians, teaches how to consecrate those things that belong to the dominion of Amaymon his king (there is a contradiction here, see above), gives true answers concerning past, present and future, and can carry and re-carry men and things speedily from one nation to another at the conjurer's will. According to a few authors he can make men ignorant.
According to Pseudomonarchia Daemonum certain necromancers honour him with sacrifices and burning offerings.
He is depicted in human shape.
Other spellings: Goap, Tap.
Rank[]
Gaap is a mighty Prince and Great President of Jinnestan and commands sixty-six legions of demons. He is the king and prince of the southern region of Jinnestan and Earth, and according to the Pseudomonarchia Daemonum the king of the western region and as mighty as Beleth, but for both he is the guide of the four kings (the others being Ziminiar, Corson and Amaymon, although some translations of The Lesser Key of Solomon consider Belial, Beleth, Asmodai and Gaap, not giving detail on the cardinal point they rule). Gaap specifically controls the element of water and reigns over the Water Elementals or the 'water demons'.
Powers[]
Gaap teaches Philosophy and all liberal sciences, can cause love or hate and make men insensible and invisible, deliver familiars out of the custody of other magicians, teaches how to consecrate those things that belong to the dominion of Amaymon his king (there is a contradiction here, see above), gives true answers concerning past, present and future, and can carry and re-carry men and things speedily from one nation to another at the conjurer's will. According to a few authors he can make men ignorant. He is said to be better conjured to appear when the Sun is in a southern zodiacal sign. According to Pseudomonarchia Daemonum certain necromancers honour him with sacrifices and burning offerings.