A nuppeppo is a wrinkly, featureless yokai with powder-white skin that smells of rotting flesh. It’s a harmless, solitary creature that can be found in deserted towns, graveyards, and temples. Some say eating a nuppeppo will grant eternal youth. Image: Hyakkai Zukkan
The Alukah, also known as the “horse-leech”, is a giant and many toothed leech that, according to the Sefer Hasidim, takes human and wolf form. It’s possible that the word “leech” actually describes its blood feeding nature, not its appearance, and that the creature is more of a shape-shifting vampire. It can fly using its long hair and may be a descendant of Lilith.