The Hecatonchires were born of Gaia and Uranus. They were stronger, more overbearing, and more fierce than even the mighty Cyclopes. They had 100 arms and 50 heads each. Their names were Cottus, Briareus, and Gyges. Uranus was disgusted by these children, so in a fit of outrage he cast them into Tartarus to be locked up forever. Gaia was distressed about this and asked the Titans for help in retrieving them. Only Cronus agreed to help. Cronus waited for Uranus under his bed. That night, when Uranus laid with Gaia, Cronus castrated Uranus and cast his genitals behind his head and into the sea. This caused foam in the sea and blood drops on the land. The foam was the birthplace of Aphrodite. The blood drops gave birth to the giants and nymphs.