Recently arrived half-blood who hasn't been claimed by a godly parent yet.

Hunter specializing in forest warfare and woodland tracking.

Goddess of the hunt and moon who arrives with her Hunters to help fight Dr. Thorn. Appears as a...

Ancient Greek hunter who has served Artemis since classical times.

One of Artemis's hunters who arrives with Zoë to fight Dr. Thorn. Known for her incredible speed.

Revealed to be a daughter of Hades, making her one of the forbidden children of the Big Three. Has...

Son of Athena studying under Malcolm while Annabeth is missing.

The lake at Camp Half-Blood where water activities take place, home to naiads and other water...

The forest surrounding Camp Half-Blood where capture the flag is played and various creatures live.

Various demigods at Camp Half-Blood dealing with the crisis of having three Big Three children...

The strawberry fields at Camp Half-Blood that help fund the camp through sales to mortals.

Son of Dionysus and twin brother of Pollux, head counselor of Dionysus cabin.

Son of Hephaestus and head counselor of the Hephaestus cabin, expert metalworker.

Activities director at Camp Half-Blood, concerned about the implications of having three children...

One of the younger hunters of Artemis who helps train new recruits like Bianca.

Daughter of Ares and head counselor of the Ares cabin at Camp Half-Blood.

Son of Hermes and one of the Stoll brothers known for their pranks and thievery.

Hunter of Artemis skilled with a bow, part of Zoë's rescue team at Westover Hall.

New camper who arrived with electronic gadgets that keep malfunctioning.

Hunter who joined Artemis during the Roman era, bringing knowledge of Roman hunting techniques.

Daughter of Aphrodite with a mean streak and powerful charmspeak abilities.

Hunter of Artemis who joined during a full moon ceremony centuries ago.

Still searching for Pan while serving as a protector. Joins the mission to Westover Hall to help...

Immortal huntresses who serve Artemis. Skilled warriors who have sworn off romantic love for...

Son of Hephaestus working under Beckendorf in the forges.

One of the more recently recruited hunters, joined within the last century.

Hunter of Artemis known for her fierce temperament and skill with wild animals.

Daughter of Demeter and head counselor of the Demeter cabin, expert with plants.

Son of Apollo and head counselor of the Apollo cabin, skilled archer and healer.

Hunter of Artemis who specializes in moonlight combat and lunar magic.

Son of Athena and temporary head counselor while Annabeth is missing.

Frightened new arrival at Camp Half-Blood who witnessed monster attacks.

One of the oldest hunters of Artemis, second only to Zoë in experience and wisdom.

Small son of Apollo with exceptional archery skills despite his size.

Daughter of Demeter who helps Katie with the strawberry fields.

Camp director who continues to get Percy's name wrong. Seems more concerned than usual about the...

Young hunter of Artemis who specializes in night combat and stealth operations.

Revealed to be a son of Hades, making him another forbidden child of the Big Three. Has been living...

Witnesses Annabeth being taken by the manticore Dr. Thorn after she pushes him out of the way....

Son of Dionysus and twin brother of Castor, skilled with vine magic.

Skilled archer among the hunters who specializes in silver arrows blessed by Artemis.

Daughter of Aphrodite and head counselor of the Aphrodite cabin.

Struggles with her powers and the knowledge that she could fulfill the Great Prophecy about a child...

Son of Hermes and head counselor of the Hermes cabin, known for leading pranks.

Extremely loyal to Artemis and suspicious of male heroes, especially Percy. Has served Artemis for...

Captured by Dr. Thorn, the manticore, after pushing Percy out of harm's way. Her sacrifice saves...

One of the younger cadets at Westover Hall attending his first school dance.

One of the military cadets at Westover Hall participating in the dance.

Military cadet at Westover Hall who witnessed the strange events at the dance.

A military cadet at Westover Hall present at the school dance.

Military cadet at Westover Hall who attended the school dance.

A military cadet at Westover Hall attending the school dance.

Captures Annabeth during the battle and escapes with her. His mission was to bring the di Angelo...

The headmaster of Westover Hall military academy, responsible for school administration.

Food service workers at Westover Hall who prepared refreshments for the dance.

School maintenance worker who keeps Westover Hall clean and secure.

A monster with a human head, lion body, and scorpion tail that shoots poisonous spikes.

Stern military instructor at Westover Hall who maintains discipline among the cadets.

Mathematics teacher at Westover Hall helping supervise the school dance.

Administrative secretary at Westover Hall who handles school correspondence and records.

Teacher at Westover Hall serving as chaperone for the school dance.

School librarian at Westover Hall who manages the academy's library resources.

Medical nurse at Westover Hall who tends to student injuries and health needs.

Elderly groundskeeper at Westover Hall who maintains the school's outdoor areas.

History teacher at Westover Hall who teaches about military history and strategy.

Former military officer who supervises the dormitories at Westover Hall.

Magical force that obscures supernatural events from mortal perception.

Security guards at Westover Hall who patrol the buildings and grounds during events.

Military school students at the dance, unaware of the supernatural drama unfolding around them.