Yamata no Orochi. As the name depicts in eastern oriental has eight heads and each is capable of something magical. Legend has it that the serpent originally only had one head. However, its shrewd tactics to tell lies had enabled it to extort both gods and goddesses to sacrifice their daughters to keep it in check. And each time the god and goddess sacrificed their daughters, the serpent itself grew a head because of their daughter's abilities.
And thus according to the lore, the serpent was killed in the eighth year before the eighth daughter of the minor gods was taken away. The existence of its corpse had been kept a secret so that no one would be able to resurrect such a horrific creature back alive again. But the Gods never know that the one that had been defeated was merely a shadow of its former self and its true form had always been manifest under a giant celestial turtle.