Yvain is a knight of King Arthur's court and the son of King Urien. He operates by the code of chivalry, engaging in combat and demonstrating charity toward those in need. Drawn to physical challenges, he travels to the Brocéliande Forest to avenge his cousin's defeat. His priorities shift when he becomes infatuated with the widow of the man he fights.

Laudine is the heir to Duke Laudunet and the ruler of Landuc Castle. She carries the responsibility of protecting her realm and the magical fountain of Brocéliande. Practical and direct, she recognizes her domain's need for a strong champion to ward off threats, particularly from forces seeking to control the fountain.

Lunete is a young chambermaid and the closest confidante to Laudine. She manages political and personal situations within the castle, often stepping in to solve problems for her lady. She possesses a ring of invisibility and aids those she considers honorable, providing food and shelter to trapped knights.

Arthur is the stately king of Britain, presiding over a court of renowned knights. He commands respect and wields significant power, settling disputes and leading his entourage on quests. He values loyalty and bravery among his knights while maintaining the order of his royal household.

Gawain is the nephew of King Arthur and a prominent knight. Dedicated to the jousting circuit, he serves as Yvain's closest companion. He believes a knight must maintain his martial prowess and frequently encourages his friends to participate in tournaments rather than remaining idle.

The Lion is a creature rescued from a deadly attack by Yvain. It sheds tears of gratitude and acts as a hunting partner. It fights to protect its savior, serving as a dependable asset in physical altercations and symbolizing strength.

Kay is the royal manager and a knight in King Arthur's court. He frequently uses sharp language to mock his peers. His habit of belittling the other knights makes him unpopular and regularly draws reprimands from the Queen.

Harpin is a massive giant who attacks a local barony. He destroys property, kills captives, and attempts to extort lords for their daughters. He utilizes physical intimidation and a large club to enforce his demands upon the surrounding lands.

Calogrenant is a knight of King Arthur's court. Seven years prior to the main events, he undertook a quest into the Brocéliande Forest, where he survived a supernatural storm but suffered a humiliating defeat in a joust. His honesty in sharing this embarrassing defeat spurs the story's main action.

Esclados is a large knight who serves as the fierce defender of the Brocéliande fountain. He aggressively punishes anyone who triggers the fountain's magical storm, riding out in heavy armor to protect his lands and preserve his domain from intruders.

Guinevere is the Queen of Britain and King Arthur's wife. She possesses an excellent memory and a strong sense of decorum, quickly reprimanding Kay when he insults the other knights. She maintains order and civility within the royal social circles.

The Lady of Noroison is a noblewoman whose lands are besieged by a hostile count. Compassionate and resourceful, she provides a magical healing salve to cure madness and offers generous hospitality to those who aid her in defending her territory.

Count Alier is an aggressive warlord who conducts a destructive military campaign against a neighboring noblewoman. He relies on force and pillaging to expand his power, requiring physical intervention to be stopped.

The Seneschal is the overseer of Laudine's castle management. Driven by jealousy and resentment, he uses his position of power to politically maneuver against his rivals within the court, resorting to false accusations to eliminate those he dislikes.

King Urien is a noble ruler and the father of Yvain. Though he does not directly participate in the immediate action, his legendary status and royal bloodline lend Yvain credibility and prestige among the nobility.