In Japanese folklore, one of the most recognized yokai is the Kappa. Legends described this entity with the face of a monkey with the beak of a turtle and the top of his head has a plate-shaped depression. The Kappa has green, reptilian skin and often has a turtle shell on his back. Many myths mention this yokai has webbed hands and feet along with the ability to elongate its arms and legs
Japanese folklore holds some of the most frightening and dark tales on the planet. There are stories about monsters that hunger for human flesh, house items coming alive to terrorize their owners and the dead arising from the grave to devour souls. Some legends warn if one been wronged in life, their spirit could return as a malicious force capable of harming the living. One such entity, fishermen and sailors fear lurking in the open water is the funayurei.
Despite differences in any society or culture, you could find in many of their folklore common imaginary about the supernatural. Since the earliest human civilization, there have been stories about people returning from the grave needing to feed upon humans to substance themselves. Legends of these creatures are told across the global including Japan with its folklore holding some morbid myths such as the Hone-onna.
In Japan, yokai is a general term given to demons, monsters, and spirits mentioned within folklore. In some of the legends, these supernatural entities were once in life human, an animal or even an ordinary household item. Several yokai born resulted from the anger and hatred creatures felt for the mistreatment at the hands of humans. Even abused household pets may transform into a malevolent force that terrorize former owners such as the nekomata.
Over the years, I read many Japanese legends about creatures called yokai. They are the monsters, ghosts, demons, and other supernatural entities believed lurking within the shadows. Japan holds some of the darkest and twisted folklore in the world along with the most bizarre beings. I thought by now I learn nearly all the aberrant yokai of myth, until recently reading about the Nuppeppo.