In Greek mythology, Echidna (; Greek: Ἔχιδνα, "She-Viper") was a monster, half-woman and half-snake, who lived alone in a cave. She was the mate of the fearsome monster Typhon and was the mother of many of the most famous monsters of Greek myth.
Satori (覚, "consciousness") in Japanese folklore are mind-reading monkey-like monsters ("yōkai") said to dwell within the mountains of Hida and Mino (presently Gifu Prefecture).
