What is the cyclopes' name in Rick Riordan's 'The Sea of Monsters'?

Depends, If your talking about Tyson a Cyclopes that is percy's half brother since tyson is Poseidon's son but, mot a human and god. He is an mix of an nature spirit and a god. That are how cyclops are made in this series. Weird huh.
If your talking about the bad cyclops that has the fleece that is polyphemus. he once fought Odysseus. the cyclopes has the fleece and is attracting satyrs to his island to eat.