Poseidon

The god who created Kricktria had returned to find the world enveloped by ancient malignant spirits. He expunged the spirits from the world and then created avatars of himself to help stabilize the dimension. Though these avatars were not gods nor humans, they each had their own will along with individual abilities and personalities. Once the world had been deemed safe, the god left for a different world. Over time, the avatars lost their power and went into resting. And bit by bit, the existence of the avatars disappeared from the people's memories. As one of the god's avatars, Poseidon was created to repel the malignant spirits in the deep sea. Her vitality is as great as her ability to endure the cold of the deep seas and has a strong defensive power. The merpeople called Poseidon the god of the sea in reverence of her abilities to repel the malignant spirits and in her slumber, they built a temple and continued to serve her.