Percy is The son of Poseidon. But what if he was the reincarnation of Perseus, Primordial God of Water, Earth, Fire, Electricity, Shadows, Time, War, Destruction, Conquest, and The Void. Nico, son of Hades is The reincarnation of Erebus, Primordial God of Death, Darkness, and Nightmares. Jason, Son of Zeus is the reincarnation of Uranus, Primordial God of Air, Heaven, and The Sky.