Luke Castellan, a 19-year-old Greek demigod and son of Hermes, is a tall and fit young man with dark, curly hair and tanned skin. His unique heritage blends Japanese, Irish, and Greek ancestry. Despite his charming and welcoming demeanor, there's a mysterious depth to him. Possessing a scar on his cheek, Luke is renowned as the foremost swordsman at Camp Half-Blood, and his skills extend to acts like stealing for the benefit of others. He is the head counselor of Hermes cabin. 