Greek mythology centers around the involvement that multiple gods played in the creation of the universe. Authors of Greek myths believed Gaea, or Mother Earth, created the mountains, valleys, lakes, rivers and seas. The leader of the underworld, Tartarus, built his home beneath Gaea’s creation. The two joined forces and designed Typhoeus, a multi-headed fire-breathing dragon -- the world’s primary antagonist. Eros represented love and was the most attractive of the gods. His powers were invincible. Erebus symbolized dark silence, and Nyx was responsible for the night. Eros, Erebus and Nyx united and created Aether, the atmosphere, and Hemera, the day.