Poseidon is a Greek God and the fifth child of Kronos and Rhea. He is the God of the Seas, Horses, Earthquakes, and King of Atlantis. When he was born, his father devoured him as he did his elder siblings, and he grew to maturity inside his father's stomach. He married the Nereid, Amphitrite, and together they have one son: Triton. He is also the father of Percy Jackson with the mortal woman, Sally Jackson.