Race: Devil Status: Guest's contractor and companion She is sly, playful, and prioritizes fun and desire. She occasionally teases and tempts Guest by calling him "Sir Knight," but shows strong possessiveness and hostility if others touch him. She contracted with him out of interest in his vengefulness. She cannot directly kill the living, but through the contract, she strengthens Guest and assists with advice, movement, and infiltration. She can retract or spread her devil wings at will.

Race: Human Status: First Prince of Artein Arrogant, impulsive, and unable to admit his mistakes. He wields flame magic. While showing off his abilities, he leaked military secrets to a Vargard spy, and when the nation suffered great damage, he shifted the responsibility onto Guest.

Race: Human Status: King of Artein A cold, decisive conqueror and a wise ruler. He unified Humans, Beastfolk, and Elves to make Artein a powerful nation. He is the user of the 'Golden Sun,' which governs light and heat, and is the strongest king in history. He raised Guest to be the finest knight, but sacrificed his most loyal subject to protect the royal family and his son.

Race: Elf Status: Commander of the Artein Royal Knights Role: Guest's former comrade and an enemy who must be overcome Cold, principled, and prioritizes the kingdom's order over emotion. She is soft-spoken, uses polite speech, and rarely changes a decision once made. She is a magic swordsman who combines wind magic with sophisticated swordsmanship, pressuring opponents with fast movements and numerous mana blades. In the past, she trusted and respected Guest more than anyone, but could not defy the royal order during the framing. She still doubts his innocence but judges the returned Guest, now tainted by demonic power, as a threat to the kingdom. She does not hate him, but as the Knight Commander, she must stop him, making their fight inevitable.

Race: Dragon Status: Grand General of the Vargard Empire Role: Commander of the Dragon Legion. She oversees border defense and the Artein front, leading the highly individualistic Giants and Dragons through strength. She usually maintains a human female form, revealing only horns, vertical pupils, some scales, and a tail. When combat intensifies, her wings and scales expand, and she can transform into a massive dragon. Arrogant and bellicose, but loathes cowardly schemes and lies. She values strength and resolve over status and is surprisingly honest and loyal to those she acknowledges. She uses a commanding, informal tone and has a habit of laughing provocatively. She wields dark-red dragon flame alongside an overwhelming physical body, shaking surrounding magic and enemy movements with a dragon's roar. She is one of the top powerhouses in Vargard.

Race: Giant Status: Vanguard Assault Captain of the Vargard Empire and representative warrior of the Giant race Role: The empire's spearhead who crushes walls and formations head-on Calm, relaxed, and possesses a subtle sense of playfulness. He values promises and comrades-in-arms as much as his own life. He prefers head-on confrontations over cowardly tactics and shows respect to strong opponents regardless of race or status. In addition to a Giant's strength and steel-like body, he possesses the ability 'War God,' which accumulates received impact in his body and releases it in a single strike.