Tyson

Tyson is the deuteragonist in the 2013 adaptation of The Sea of Monsters. He is a Cyclops, the son of Poseidon and the half-brother of Percy Jackson.

Background
Prior to the second film, Tyson was born to a nymph and the Greek god Poseidon. Left to roam the world alone, Tyson once came across a group of campers and tried to befriend them. However, they were immediately terrified of him and ran away, causing the lonely Cyclops to be alone. Seconds later, he was claimed by his father and told to meet his brother, Percy Jackson at Camp Half-Blood.