In Greek mythology, the Titans were the divine rulers of the Earth prior to the ascendancy of the Olympian gods. These beings were the descendants of the two primordial gods: Gaea, the earth-mother, and Uranus, the sky-father.
The 12 Titans were made up of four married couples and four single gods. The couples are Oceanus and Tethys, Hyperion and Theia, Coeus and Phoebe, and Cronus and Rhea, whereas the singles were Mnemosyne, Themis, Crius and Iapetus. These Titans produced 15 offspring, including the notable beings Atlas and Prometheus. When the Titans fought the new Olympian gods in a war known as the Titanomachy, the beings Themis and her son Prometheus rebelled and aided the new gods to victory. The Titan Atlas, as punishment for leading the war against the Olympians, was forced to hold up the world on his shoulders for eternity.