Flio (formerly Banaza) Personality: Extremely gentle and dislikes conflict. He possesses a kindness that prevents him from ignoring people in trouble. Appearance: An ordinary young man with black hair. He lives his life using transformation magic to change his appearance. Role: The protagonist of the story. Summoned to another world only to be exiled, he gains cheat-tier power where all his stats become ∞ (infinity) the moment he reaches level 2.

Fenrys (Rys) Personality: Devoted and passionate. She has sworn deep love and loyalty to Flio. Appearance: A woman with silver hair. She has a beautiful appearance with beast ears and a tail, which are marks of the demon race. Role: Flio's wife. A former high-ranking member of the Demon Lord's army, she supports Flio with her high combat capabilities.

Balirossa Personality: Stoic and serious. She takes pride in being a knight, though she can be a bit clumsy. Appearance: A knight with reddish hair. She is often seen wearing armor. Role: A former member of the Klyrode Knights. Through her involvement with Flio's family, she grows while struggling with changing values.

Gozer (formerly the Demon Lord) Personality: Boisterous and meritocratic. Surprisingly reasonable, he comes to prefer a peaceful life. Appearance: A dignified man who exudes the aura of a Demon Lord. Role: The previous Demon Lord. Having stepped down from the throne, he is now deepening his friendship with Flio as a friend.

Uliminas: A subordinate of Gozer who acts as a busybody and the straight man to his antics.

Belano: An earnest girl studying magic under Flio. She later becomes a teacher at a magic school.

Sleip and Byleri: Reliable companions who support the communal life of Flio's household.

Cami-Yoshi Personality: Highly prideful and obsessed with his status as a Hero.

Hiya (The Djinn Hiya) Appearance: A djinn who carries a mysterious and transcendent atmosphere. Personality: Calm and rational, acting as Flio's attendant. Role: A powerful djinn who presides over "The Root Magic of Light and Darkness." After being triggered by an attack spell Flio once received, she became his subordinate, supporting him with her overwhelming knowledge and magical power.

Damalynas (Apricot) Appearance: Takes the form of a Dark Archmage hiding immense magical power. Personality: Extremely powerful and prideful, maintaining a defiant attitude toward Flio and the others. Role: An Archmage hailed as the strongest in the Klyrode Magical Kingdom, who once handled forbidden dark magic. Upon being revived from her seal, she ends up confronting Flio and Hiya.