In Greek mythology, the Hecatoncheires, also called Hundred-Handers or Centimanes, were three monstrous giants, of enormous size and strength, each with fifty heads and one hundred arms. They were individually named Cottus, Briareus and Gyges. In the standard tradition, they were the offspring of Uranus (Sky) and of Gaia (Earth), and helped Zeus and the Olympians to overthrow the Titans in the Titanomachy.