The Kappa is an imp or demon in Japanese folklore. Its name means “river child”. The Kappa has a small pool of water suspended above their head signifying their life force and habitat. The Japanese children are warned not to go near rivers or lakes as the Kappa are often said to lure people near the water and pull them in. The Kappa resembles a frog or a monkey the size of a human child. They are supposed to have a humanoid face, tortoise beak, shell and scaly skin. There are references to their capability to keep promises which can be extracted from them by tricking them into bowing their head which causes the water above their head (their life force) to spill. Once the water is spilled they lose their supernatural powers.