D'Eon de Beaumont
The hero of the story. While hunting down the person who killed his sister, he gets caught up in the mystery involving the royal family. He has both a kind heart which prays for the salvation of his sister's soul, and an absolute loyalty to France.
Lia de Beaumont
D'Eon's older sister. She became a member of Le Secret du Roi, and won the king's favor with her beauty and sword skills. She was killed by someone, and now exists only as a soul.
Anna
D'Eon's fiancée, who loves him. Takes care of Auguste.
Auguste
The future Louis XVI. The next king of France.
The Duke of Broglie
Close aide to the King. Manages Le Secret du Roi.
The Four Musketeers
Durand
An impressive swordsman. Seems to know Lia.
Teillagory
Legendary swordsman. D'Eon and Lia's instructor.
Robin
The queen's attendant. Is accompanying D'Eon on his journey.
