Yōkai (妖怪) are a class of supernatural entities and spirits in Japanese folklore.
ろくろ首 / Rokurokubi
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During the day Rokurokubi look like ordinary women but at night, while their bodies are sleeping, their necks stretch out wildly and they roam freely. Rokurokubi are not malevolent creatures: they just enjoy looking at things from a different perspective.
五体面 / Gotaimen
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Gotaimen has an oversized human face with stumpy arms and legs attached to it. He brings joy and will dance for those that give him alcohol.
口裂け-女 / Kuchisake-onna
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The woman was mutilated by her husband before death. She asks potential victims if they think she is beautiful. If they respond with "no", she will kill them. If they say "yes", she will reveal her mutilated mouth. She then repeats her question and if the person responds with "no" she will kill the person. If the response is "yes", she will slice the corners of the person's mouth from ear to ear.
河童 / Kappa
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It’s about the size of a child with webbed hands and feet and a turtle-like carapace on its back. The most notable thing about its body is a hole in its head that holds the kappa's strength giving water. The only things kappas enjoy more than human entrails are cucumbers.
海坊主 / Umibōzu
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It appears to sailors on calm seas which quickly turn tumultuous. It either breaks the ship on emergence or demands a bucket or barrel from the sailors and proceeds to drown them. The only safe way to escape an Umibōzu is to give it a bottomless barrel and sail away while it is confused.
百々目鬼 / Dodomeki
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They are cursed women with very long arms, covered with hundreds of tiny bird eyes. They were once human beings who developed habit of stealing money. The bird eyes that grow on the Dodomeki's skin are a reference to the Japanese dōsen, a copper coin with a hole in the middle.
傘おばけ / Kasa-obake
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They are umbrellas with one eye, a protruding tongue and jump around with one leg. They are tsukumogami creatures, tools that have lived for at least a hundred years and acquired a kami or spirit.
