King Poseidon is a prominent figure in ancient Greek mythology, known as the god of the sea, earthquakes, and horses. He is one of the twelve Olympian deities and is often depicted holding a trident, a three-pronged spear that symbolizes his power over the oceans. Poseidon is the brother of Zeus, the king of the gods, and Hades, the god of the underworld. In myths, Poseidon is associated with various stories, including his rivalry with Athena for the patronage of the city of Athens. He is also known for creating horses and is often worshipped by sailors seeking protection during their voyages. His temperamental nature reflects the unpredictable power of the sea.