The deities of ancient Greece represented the essence of their culture and search for explanations about life and the world around them. The Greeks believed that the universe existed first and it created the gods and goddesses.
The eldest gods are the Titans, each was associated with a planet. They were overthrown and banished to Tartarus, the deepest of the underworlds, by the Olympians who became the rulers.
Although the Greek gods have human form they never age or die. Like mortals, they have passions and display weaknesses and were often held accountable for their actions in mythological tales.