In Greek mythology Triton was the son of Poseidon and Amphitrite. He is known as the "Trumpeter of the Sea", and is often depicted as part man, and part fish. Triton is oldest of first generation of Tritons.
In the God of War Series
Kratos, while in Atlantis, encountered sea folk, known as Tritons. They were sent by Poseidon to stop Kratos and save Atlantis. Three types were represented: Assassins, Soldiers, and Lords. There are also statues and carvings of a Triton outside the Temple of Poseidon and throughout Atlantis. They served Poseidon, god of the seas and father to Triton.