Zeus was the youngest son of Kronos. His mother, Rhea, saved Zeus from Kronos when she hid him on the island of Crete. Kronos had swallowed his previous children, and when Zeus was born, Rhea quickly replaced the child's body with a stone wrapped in clothing. Kronos swallowed the stone without hesitation.
When Zeus was older, he tricked Kronos into regurgitating his brothers and sisters and led his generation in a battle against the Titans. Kronos was overthrown, and Zeus took control of the universe. Lots were drawn to divide the kingdom — Hades won rule of the underworld, and Poseidon took control of the Sea. The heavens and the earth went to Zeus, who became the supreme god of ancient Greek religion.