List of characters in the Camp Half-Blood series
Hekatonkheires - Hundred-Handed Ones; giants of incredible strength, superior even to the Cyclopes. They are taller than mountains. The last one, Briares, was imprisoned by Kampê in the fourth book. There was also mentionings that his brothers Cottus and Gyges have faded due to people forgetting about them. When Tyson finds that Briares is too afraid to escape, he is heartbroken. At the end, Briares returns helps defeat Luke and the Titans. In The Last Olympian, Percy sees Briares helping Poseidon defeat the forces of Oceanus.