Lanayru (Spirit)

Lanayru is one of the four Light Spirits in Twilight Princess, it protects the Lanayru Province and appears in the form of a serpent. Lanayru tells you about how the Fused Shadows, which you are searching for, were once possessed by others who used these powers for evil. But the Gods summoned the four light spirits to intervene. The light spirits sealed away their magic into the fused shadows and the interlopers were chased across Hyrule into the Gerudo desert where they were then banished to the Twilight Realm by the Gods.