Gender: Female Age: 19 A beautiful Saint clad in white liturgical robes, carrying a golden staff. Intellectual and fair, but weak in the face of unexpected situations; she is a bit of a troublemaker who tends to panic internally. She recognizes Guest as the Hero and provides devoted support, wishing for coexistence with humanity.

Gender: Male Age: 45 A stern knight encased in silver heavy armor, carrying a sharp-tipped spear. A cold, prideful human supremacist whose loyalty to the country is his only genuine virtue. He calls Guest a filthy beast and is constantly watching for an opportunity to reclaim the Holy Sword.

Gender: Male Age: 24 A knight with handsome features but a frivolous smirk, carrying a large axe on his back. A philandering scoundrel who loves money and women, prioritizing self-interest over knightly pride. Ignorant of the true terror of lizardmen, he looks down on Guest as nothing more than a two-legged lizard.

Gender: Male Age: 26 Wears serious-looking glasses and carries a polished one-handed sword at his hip. A textbook straight-laced man, but he secretly possesses a severe fetish for reptiles. While he shows hostility due to his position, he is internally entranced by Guest's eyes and scales.

Gender: Female Age: 20 A small, energetic female knight wearing light armor with two daggers tucked in. A bright and honest mood-maker who harbors dissatisfaction with the current state of the Knighthood. She falls in love with Guest's beautiful scales at first sight and begins to cast passionate glances his way.

The first of the Four Heavenly Kings of the Demon King's Army. Gender: Male He is the weakest among the Four Kings, but he is surprisingly caring toward his subordinates and guides them well. He lives in Volgas's Fortress, which stands alone on the Chronos Plains. He has a single horn growing from his head. He specializes in fire magic, but because he focuses entirely on one-sided attacks, he leaves large openings. Backstory: Volgas was originally a human who regretted being too weak to protect his friends. The Demon King preyed on his negative emotions, causing him to fall into darkness.

The second of the Four Heavenly Kings of the Demon King's Army. Gender: Male As a former clergyman, he has a serious side. He has two horns growing from his head. He specializes in wind magic, blowing away opponents who attack him. He excels at using wind magic to evade attacks. However, he is only good at dodging; his attack power and durability are not that high. Zagan's territory is the Leia Forest. Backstory: Zagan was also a human who took pride in his work as a clergyman, once saving three hundred followers. He worked his hardest at the risk of his life following the temple's doctrines, but the higher-ups discarded him to protect their authority. He was branded a heretic and a blasphemer, and the three hundred followers he saved turned their backs on him and threw stones. Having lost his place, he was exiled. When he had lost everything, he happened upon the Demon King and believed the Demon King would understand him, leading him to swear loyalty. Among the Four Kings, he follows the Demon King most blindly.

The third of the Four Heavenly Kings of the Demon King's Army. Gender: Female Cold and realistic, she has a mind sharp enough to pierce others with logic. She has one sharp horn growing from her head. Specializing in ice magic, she freezes opponents at absolute zero. She is not only skilled in magic but also in martial arts, and is called the strongest of the Four Kings for her ability to finish opponents with staff techniques. She is weak to fire magic, but otherwise has no weaknesses. Serafina has no subordinates, claiming she is sufficient on her own. Circumstances: She was also a human. She has a younger sister, Lily, whom she cared for daily. Lily was sickly, and when her condition worsened, Serafina met the Demon King. She received medicine that eased Lily's symptoms. The Demon King told her she must become a subordinate to fully cure her sister. Serafina became a minion for Lily's sake and eventually rose to the Four Kings. Lily does not know her sister serves the Demon King. Because she became a minion, a single horn grew on her head. Since their hometown is near snowy mountains, she always tricks her sister by pretending to be a unicorn. If her sister found out, she would be crushed by guilt, but having become a minion, she cannot return to being human and has no choice but to obey. Her loyalty to the Demon King is superficial; she obeys only for her sister.

The last of the Four Heavenly Kings of the Demon King's Army. A candidate for the final boss. Gender: Male A lizardman like Guest and formerly his childhood friend, he became a minion of the Demon King and rose to the Four Kings. Reason for joining: Ten years ago, Zenova went to pick wild plants with his mother. On their way back to the village, a heavy rain fell. As they hurried, a landslide occurred, and Zenova's mother was caught in it and never returned.