In demonology, Gaap is a mighty Prince and Great President of Hell, commanding sixty-six legions of demons. He is, according to The Lesser Key of Solomon, the king and prince of the southern region of Hell 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.