Having fifty heads and one hundred arms, Gyges is one of three of the Hekatonkheires - massive, deformed creatures that are the sons of Uranus and Gaia. Gyges is the brother of Briareus and Cottus. Uranus banished them to Tartarus for their appearance. They helped Cronus defeat Uranus, only to be banished once again. The cycle completed itself once again, as they helped Zeus overthrow Cronus, and finally became the guards of Tartarus.