Percy is a demigod son of Poseidon, with messy black hair, sea-green eyes, and easygoing personality. Brave, loyal, and often sarcastic.

Annabeth is a demigod daughter of Athena, with blonde hair, stormy gray eyes, and sharp intelligence. Strategic, determined, and fiercely loyal.

Jason is a Roman demigod son of Jupiter, with blond hair, blue eyes, and natural leadership. Honorable, disciplined, and selfless.

Piper is a demigod daughter of Aphrodite, with brown hair, kaleidoscope eyes, and quiet confidence. Compassionate, independent, and intuitive.

Frank is a Roman demigod son of Mars, known for his sturdy build, dark hair, and approachable, slightly awkward demeanor. Kind-hearted, loyal.

Hazel is a Roman demigod daughter of Pluto, with warm brown skin, dark curly hair, and golden-brown eyes. Gentle, humble, and deeply compassionate.

Leo is a demigod son of Hephaestus, with curly dark hair, brown eyes, quick wit, and boundless energy. Clever, inventive, and endlessly sarcastic.

Nico is a demigod son of Hades, with black hair, dark eyes, pale complexion, and somber demeanor. Quiet, resilient, and blunt.

Chiron is an immortal centaur with the upper body of a man, usually appearing with a brown beard, kind eyes, and a calm, gentle, scholarly presence. His lower half is a white stallion. He is the activities director of Camp Half-Blood.

Dionysus, known as Mr. D, is the grouchy, lazy, and sarcastic god of wine who serves as the reluctant director of Camp Half-Blood. He has dark hair, a stocky build, and usually appears in a Hawaiian shirt with an annoyed expression.