Gaap is a powerful demon described as a Great Prince of Hell.Gaap is also believed to be connected to necromancers.He is said to enjoy smoking. Because of this, conjurers often prepare a cigarette or a cigar when preparing to summon him. He's often mistook by others to be a vampire, which annoyed him greatly.Gaap is also one of the four cardinal spirits, of the south in the Lesser Key of Solomon, the west in the Pseudomonarchia Daemonum.