Greek Mythology was popular theme of several Ray Harryhausen's films. The Greek Gods lived on Mount Olympus. After overthrowing their monstrous ancestors, the Titans, the Olympian gods became the rulers of the World. The Olympian gods majestically and democratically dwelled on Mount Olympus, the highest mountain in Greece. The leader of the Olympian gods was Zeus. Greek myths always refer to the twelve Gods of Mount Olympus, but actually, in total there were more Olympian Gods in Greek Mythology. However, there were never more than twelve at one time.