Gazu Hyakki Yagyō (画図百鬼夜行?, "The Illustrated Night Parade of a Hundred Demons") is the first book of Japanese artist Toriyama Sekien's famous Gazu Hyakki Yagyō e-hon series, published 1776.
These books are supernatural bestiaries, collections of ghosts, spirits, spooks and monsters, many of which Toriyama based on literature, folklore, other artwork. These works have had a profound influence on subsequent yōkai imagery in Japan. (Also see: Hyakki Yagyō). The various creatures are described, below, using images to illustrate many of them.
The first volume of Gazu Hyakki Yagyō, called "Yin", includes the following demonic creatures.
Kodama (木魅?) : Sekien's comments: A spirit (kami) said to appear in one-hundred-year-old trees. (百年の樹には神ありてかたちをあらはすといふ。?)
Tengu (天狗?) is a popular bird-like demon in Japanese folklore.