Ekidna is a character in Gargoyles.
Ekidna is a hag-like half-woman half-snake woman that lives on New Olympus. She is particularly suspicious and ill-willed towards humans.
In Greek Mythology, Echidna is a half-woman half-snake Drakaina who is the wife of the monstrous Typhon. With Typhon, Echidna fathered some known monsters of Greek Mythology like Hydra, Cerberus, Chimera, Ladon, the Nemean Lion, the Sphinx