List of characters in the Camp Half-Blood series
Poseidon/Neptune - The God of the Sea, Earthquakes, Storms, and Hurricanes and the creator of the horse. He is Percy's father and his children (Percy's half-siblings) reside in Cabin 3. In the first book, he is suspected of having stolen Zeus's master bolt, but Percy proves the claim false. He appears as a minor character in the next three books. In The Last Olympian, Percy falls unconscious in the ocean and lands at Poseidon's castle. Poseidon is at war with Oceanus, the Titan god of the ocean, and makes Percy go back to camp instead of helping him. He is one of the few gods that does not go and help in the effort to defeat Typhon until Percy tells him that the only way to win is to abandon the sea and fight Typhon. His symbol of power is the trident