Thetis Neried is a minor yet significant character in the anime series Saint Seiya. She is a loyal servant to Poseidon, the God of the Sea, and serves as one of his trusted generals. Thetis is depicted as a mermaid-like being, armed with aquatic abilities and a strong sense of duty towards her master. Despite her limited screen time, she plays a crucial role in the story by acting as a messenger and protector of Poseidon's domain. Her character adds depth to the underwater kingdom and provides additional challenges for the protagonists to overcome.