In Greek mythology, Zeus was the king of the Greek gods and the supreme ruler of Mount Olympus. He was the son of Cronus and Rhea, who led the Titans (a race of mythical beings descended from Uranus and Gaia who preceded the Olympians as rulers of creation). Zeus overthrew his father to become the king of the gods. He was said to rule the world with his siblings Hera (also his wife), Poseidon, Hades, Demeter, and Hestia; his children Athena, Apollo, Artemis, Hermes, Hephaestus, and Ares; and Aphrodite. These were the thirteen major Greek gods; the Greeks also worshipped numerous minor deities.
Zeus is a philanderer, has favorites, and severely punishes mortals who dare attempt to resemble or rival him. 
Zeus is depicted as having a number of infidelities. The most famous of his children from these liaisons was Hercules, a demi-god of great strength.
- The Mythology of Jupiter, NASA Quest.