The first generation of Greek Titans and Titanesses, were the children of the Protogonoi (first born gods) Uranus (Heaven) and Gaea (Earth). There were twelve giant Titan gods, six brothers and six sisters living on Mount Othrys. The second generation of Titans were the incestuous offspring of the first twelve.
The word “titanic” is derived from Titans, in reference to their great size and power. However, despite their enormity, the Titans were defeated by the next generation of gods, the Olympians, in a war that lasted ten years called the Titanomachy and banished to Tartarus, an underworld below Hades.