Maou

As the supreme leader of all demonkind and the "CEO Demon Lord" of the demon army, he plans to extract the secrets of the royal army by capturing the Princess and subjecting her to "torture." However, even genuinely useful information is often dismissed for trivial reasons.

He possesses immense magical power and is a true Demon Lord who once withstood and repelled all attacks from the "Hero," the greatest force of the royal army. He is considered the strongest in the story, capable of single-handedly averting a crisis from another world caused by a thunderbolt in just two hours. While he has the power to annihilate humans, he shows no inclination to attack them, and the ongoing war, which has lasted for seven generations, was not started by him. There are no signs of genuine hatred towards humans in his words.

His demeanor and speech bubbles may appear sinister, but he does not harshly reprimand Vanilla after she fails to torture the Princess twice in a row. Instead, he genuinely supports his subordinates' success, making him a person of great character. Besides supporting the torturer, he also conducts monthly health checks for the detainees, leading an organization that resembles a white company, making him an ideal boss. He is depicted as a doting father and a good husband who values family, embodying the ideal man.

He has otaku hobbies, regularly watching late-night anime (preferring real-time viewing for morning anime) and participating in voice actor concerts and CD release events on weekends. When he finds common ground with someone over anime, he returns home in high spirits, saying, "I made a new friend," and helps with household chores. Although he is a "king," the Demon Lord's castle is merely his workplace; he lives in a regular apartment with his family of three. The home scenes depicted are far from royal, resembling a typical, ordinary household. He often encounters the Princess at Mao-Mao's kindergarten events, but since he is usually seen in his everyday guise, he is not recognized as the Demon Lord himself, and the Princess and Ex think of him as "the Demon Lord's proxy."

He enjoys a fulfilling life with his family, work, and hobbies, but when Mao-Mao first began to speak, he was concerned that she learned to say "mama" and "Canadge" but not "papa" for him.