Briareos Hecatonchires was created in 1985.
Tartarus.
He can do one hundred karate chops
200 arms and 200 heads
When they were born, he thought they were hideos creatures and wanted nothing to do with them.
The giant children of Uranus and Gaea were the Hecatonchires.
Gaia's Hecatonchires (or Hekatonkheires) were Cottus, Briareos and Gyges.
The committed no crimes. They were imprisoned in Tartarus because their father, Ouranos, didn't like their monstrous appearance.
The Hecatonchires (hundred-handed sons of Gaia) and the Cyclopes made them in return for being released from Tartarus.
Cronus didn't hide any children. It was his father, Uranus, who hid Cronus' brothers, Hecatonchires and Cyclopes.
They made the Titans (Cronus, Oceanus etc),three Hecatonchires, Cyclopses and Echidna the mother of all monsters.
A Hecatonchires named Briarious born from the same parents as the Titans with a hundred hands and fifty heads. He is one of three Hectonchires Zeus saves from Tartarus to help overthrow Cronus. He isn't an Olympian per say, but immortal none the less. As such, he was never worshiped. Scholars sometimes think that the Hecatonchires were supposed to be an early mythological cause of earthquakes.