Zeus was the king of the gods and ruler of Mount Olympus, known as the god of the sky and thunder symbolized by the thunderbolt, eagle, bull, and oak. Hades ruled the underworld along with his brothers Zeus ruling the air and Poseidon ruling the sea, after they defeated the Titans. Poseidon was the god of the sea and earthquakes, known as "Earth-Shaker." Leonidas was believed to be a descendant of Heracles in mythology, possessing his strength and bravery. Ares was the son of Zeus and Hera and known as the god of bloodlust and slaughter, not strictly the god of warfare. Medusa was a monstrous female