In the most ancient layers of Greek mythology, Echidna (Greek: Ἔχιδνα, ekhis, ἔχις, 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 horrible monster in the Greek myths,
Usually considered an 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...... [wikipedia.com]