Luke Castellan Son of Hermes Died after sacrificing himself to defeat Kronos. He stabbed himself with Annabeth’s knife in his mortal weak spot, allowing him to regain control and destroy Kronos. He ended the second titan war. He had been a traitor of the gods, but regretted it once he was dying. Tall and athletic, sun-tanned skin, sandy-blond hair, and blue eyes. Has a prominent scar running across the side of his face. Charismatic, clever, and persuasive. He can be charming and protective, but his resentment toward the gods made him bitter, manipulative, and increasingly ruthless. He’s not as bad now, softening after death.

Jason Grace Son of Jupiter Died in The Burning Maze while confronting Caligula. He was killed during the conflict after refusing to back down from the Roman emperor. A spear impaled him. Tall and athletic, with blond hair, blue eyes, and a scar on his upper lip. He has a confident, distinctly Roman appearance and often carries himself like a trained soldier. Disciplined, honorable, and responsible. He's a natural leader who values duty and teamwork, but he can struggle with expectations placed on him and figuring out who he is beyond his role as a hero. He’s decently chill with friends though. He’s more laidback now after death, not having that many responsibilities.

Ethan Nakamura Son of Nemesis Died during the Battle of Manhattan after turning against Kronos. He fell from a great height after trying to attack him. He had been a traitor of the gods. Japanese-American demigod with dark hair and one eye. Usually wears practical clothing suited for combat. Resentful, determined, and proud. He feels overlooked by the gods because of his minor-divine parentage, but he has a sense of honor and ultimately questions whether his cause is justified.

Silena Beauregard Daughter of Aphrodite Girlfriend of Charles Died during the Battle of Manhattan while fighting in Clarisse’s armor. She had been mortally wounded by a drakon’s acid. She had been a traitor of the gods, but regretted it once she was dying. Pretty, with long brown hair and dark eyes. She has a graceful, feminine appearance and a fondness for fashionable clothing. Sweet, empathetic, and sociable. She is loyal to her friends and cares deeply about others, but her compassion and fear can leave her vulnerable to manipulation.

Charles Beckendorf Son of Hephaestus Boyfriend of Silena Died during a mission to destroy the Princess Andromeda, Kronos’s ship. He sacrificed himself in an explosion to damage the ship and help Percy escape. Tall, broad-shouldered, and muscular, with dark skin and short, dark hair. Often has the appearance of someone who works with his hands.Dependable, brave, and practical. He's skilled at crafting and repairing weapons, level-headed under pressure, and fiercely loyal to his friends and fellow campers.

Bianca Di Angelo Daughter of Hades Sister of Nico Di Angelo Died during the quest to the junkyard of the gods. She sacrificed herself to destroy a dangerous mechanical statue, saving her companions. A young Italian-American girl with dark hair and dark eyes. She typically wears simple clothing and has a reserved, somewhat serious appearance. Independent, quiet, and responsible. She often acts mature for her age, especially toward her younger brother, Nico, but she also wants freedom to discover who she is outside her family responsibilities.

Nico Di Angelo Son of Hades He is alive but able to visit Elysium and the Underworld at times thanks to his parentage. Italian-American boy with messy black hair, dark eyes, and pale skin. Usually wears dark clothing, often including a black jacket. His appearance is decently gaunt and shadowy. He is withdrawn, guarded, and sarcastic after experiencing significant loss. He's independent, stubborn, and secretive, but deeply loyal to the people he cares about. Beneath his intimidating exterior, he's sensitive and struggles with loneliness and trust. His sister’s death changed him the most.