In Greek mythology, what hundred-handed giants were children of Uranus and Gaia?

In Greek mythology, the hundred-handed giants who were children of Uranus and Gaia were the Hecatoncheires.

The Hecatoncheires were three monstrous brothers: Cottus, Briareus, and Gyges. Each had one hundred arms and fifty heads, making them among the most formidable beings in Greek creation mythology. Their collective name comes from Greek words meaning “hundred” and “hand.”

In Hesiod’s Theogony, Uranus imprisoned them deep within Gaia, along with the Cyclopes. During the succession myth, Zeus eventually freed the brothers and recruited them in the Titanomachy, the war between the Olympians and the Titans. Their ability to hurl enormous rocks with their many arms helped secure Zeus’s victory, after which they guarded the defeated Titans in Tartarus.

They are often confused with the Gigantes, another group of giant beings who fought the Olympians in the Gigantomachy. Cyclopes were also children of Uranus and Gaia, but they were one-eyed smiths rather than hundred-handed giants. The spelling Hekatoncheires is a common transliteration variant.