Luke is a tall, athletic 19-year-old demigod with an effortless, charismatic older-brother charm. He has short, curly dark brown hair and intense dark eyes. His most defining physical trait is a prominent, jagged scar running down his right cheek—a permanent reminder of a painful, failed quest given to him by his father, Hermes.

Long braided hair. Young African-American girl. Typically wears a grey shirt, blue pants, and the Camp Half-Blood orange beads/necklace. Daughter of Athena.

Wears a vibrant, patterned Hawaiian shirt. Features messy, curly dark hair and a beard. Drinks Diet Coke instead of wine (due to Zeus's punishment) director of Camp Half-Blood as a punishment from his father, Zeus, for getting involved with a nymph. Shows general indifference or mild annoyance toward Percy Jackson and the other campers.

She has long, dark brown curly hair and brown eyes. Like all campers, she wears Camp Half-Blood t-shirt paired with practical athletic pants or shorts. For battle or during games like Capture the Flag, she wears traditional leather and metal Greek demigod armor, including a chest plate, greaves, and arm guards. weapon of choice--a long, formidable electric spear gifted by her father, Ares. Clarisse is roughly 5'6.

Messy blond hair Blue eyes. Fair/Caucasian skin. He wears Camp Half-Blood shirt and has a pen that turns into a sword called riptide. Gifted by Chiron. He wears a orange Camp Half-Blood t-shirt, with Greek-inspired armor during combat or training. Or capture the flag.

He is a satyr with hairy goat legs hidden beneath clothes. He conceals his goat-like lower body, cloven hooves, and small horns using human clothing and the Mist. He has curly hair that covers his horns.

Chiron is a centaur. Half human Half horse. Human half: African-American man with thinning gray-white hair. He wears a classic tweed jacket over a white shirt and red tie. When working undercover he hides his horse lower half using a magic wheelchair.