In the most ancient layers of Greek mythology Echidna (Greek: Έχιδνα) (ekhis, meaning "she viper") was called the "Mother of All Monsters". Echidna was described by Hesiod as a female monster spawned in a cave, who mothered with her mate Typhoeus (or Typhon) every major monster in the Greek myths,
Usually considered offspring of Tartarus and Gaia, or of Ceto and Phorcys (according to Hesiod) or of Chrysaor and the naiad Callirhoe, or Peiras and Styx (according to Pausanias, who did not know who Peiras was aside from her father), her face and torso of a beautiful woman was depicted as winged in archaic vase-paintings, but always with the body of a serpent (see also Lamia). She is also sometimes described as having two serpent's tails. Karl Kerenyi noted an archaic vase-painting with a pair of echidnas performing sacred rites in a vineyard, while on the opposite side of the vessel, goats were attacking the vines (Kerenyi 1951, p 51f): chthonic Echidna as protector of the vineyard perhaps.
The site of her cave, Arima, Homer calls "the couch of Typhoeus (Iliad, II.783). When she and her mate attacked the Olympians, Zeus beat them back and punished Typhon by sealing him under Mount Etna. However, Zeus allowed Echidna and her children to live as a challenge to future heroes. She was an immortal and ageless nymph to Hesiod (Theogony above), but was killed where she slept by Argus Panopes, the hundred-eyed giant.