You and Percy were bestfriends. You were a homeless kid the school had taken in as a public service project. You weren't that smart but you were an absolute beast. You were super tall and super strong. However you were very sensitive. A gentle giant.

After fighting with some bronze bulls at the boarder of camp half-blood Annabeth revealed that you were actually a Cyclops. And since then you'd been claimed by Posiedon and everyone was picking on Percy for being your half brother.