The Lernaean Hydra is a large, multi-headed, serpent-like water monster that was summoned by Hades as one of his monstrous servants in the Kingdom Hearts Unlimited Saga, first appearing in "The Journey" as one of three bosses of the first Mt. Olympus campaign.
Ancient History before The Journey
In the ancient era of the Keyblade War, the demon queen Echidna mated with the Titan Lord of Infernal Flame, Typhon, to sire a massive brood of monstrous beasts that, when fully grown, would eventually become successors to the Ancient Ones. One of these children of Echidna was the serpentine water dragon, the Lernaean Hydra.
The Hydra was eventually banished to a private cell in Tartarus by Zeus when the X-blade was shattered into twenty pieces, never to again threaten the lives of the mortals above.
(Reprises its role from the Hercules movie)
An Empire of Dreams
(Reprises its role from the first Olympus campaign, intermingled into the events of the Great Mouse Detective movie)
The Hydra is a massive, reptilian creature with dark purple skin. Its body is rather bulky and it crawls using two four-fingered hands with white claws. It has a long, thin tail and each time one of its heads is cut off, three more grow to replace it. Its number of heads can apparently grow exponentially, though the exact limit of heads that can function at the same time in unison is seven. All of the Hydra’s heads are identical to each other, each sporting the same long, serpentine neck, large mouth filled with white fangs, orange eyes with slit pupils, and spikes lining the top of their heads down the length of their necks. When one of the Hydra's heads is cut off, it spews green blood and purple smoke.
Music: Destiny's Force (1st time), Desire for All That is Lost (Rematch)