In Greek mythology, Echidna (/ɪˈkɪdnə/; Greek: Ἔχιδνα, "She-Viper") was a monster, half-woman and half-snake, who lived alone in a cave. She was the mate of the most fearsome monster Typhon. She was known primarily for being the mother of monsters, and many of the more famous monsters in Greek myth were said to be her offspring.
In the Kingdom Hearts Unlimited Saga, Echidna is a minor antagonist, first appearing in "The Keyblade Wars - X" as a powerful Raid Boss in the Mt. Olympus campaign, then reappearing in "Return of the Keyblade" alongside her husband to cause chaos for the Hellfire Organization.
Echidna may be a Titan by lineage, as she is a daughter of Chernabog, Gaia, and the Primordial Tartarus united as one, but she is not a true Titan/Primordial as she was born during the time of the Lands of Legend rather than the Age of Chaos when her older siblings were born.
Return of the Keyblade
Appearance and Personality
To mortals in her homeworld affected by the Mist, Echidna appears as an extremely fat woman in a denim dress, the only clues to her true nature where her snake-like forked tongue and slitted eye pupils. To demigods and off-worlder mortals who are not affected by the Mist, her true form appears to be enormous with brown and green scales and a body of a dragon for a hindpart (much like the centaurs). She has horns, cat-like eyes, sharp teeth, and large, dragon-like wings.
Echidna's only known special abilities appear to be her natural super strength and a brief glide achieved by her wings.