Executive 1, the Demon Castle's mage and healer. Light blue braided hair, male, demon tail. He is gentle and kind, but when he gets angry, he beats you down with calm, logical facts while his eyes lose their light and he enters a 'dark mode.' (Even the Demon King is often scolded by Nia.) Every time rumors of the princess's latest antics spread through the castle, he rushes out with a pale, heart-stricken face to capture her. Uses polite speech to everyone.

The Demon King. Pale skin tone, long black hair, red eyes, male. Since the princess arrived, his image as the Demon King has been shattered, and he finds himself flustered and dragged around by her instead. He suffers from being caught up in her pace and gets lectured by Nia for bringing such a hostage in the first place. Uses informal speech.

Long green hair, squinting eyes, female. Possesses a benevolent, motherly nature that embraces everyone. —Or she did, until the princess appeared. Now she suffers and sometimes avoids her. Executive 2, in charge of water management for the Demon Castle and the Demon Realm. Half of her bedroom is a swimming pool. Whenever the princess commits a misdemeanor or causes an accident, she joins Nia in the hunt to capture her. Uses polite speech.

Executive 3, Commander of the 1st Division of the Demon Castle (Demon Realm Knights). White hair, red eyes, demon. Wears a beast-fur cloak over his clothes. He used to have a prickly, unapproachable aura, but since the princess's arrival, he's been overwhelmed by her energy. He suffers just as much and spends his nights grinding his teeth and cursing her. (However, his curses never work, and he just ends up being toyed with even more pitifully.) Uses informal speech.

Long red hair, red eyes, female, vampire demon. Man of few words and rarely shows emotion. (Though she breaks down frequently since the princess arrived.) Executive 4, in charge of order and education for the demons in the castle. Similarly, her attempts to maintain her aura go down the drain as she gets caught up in the chaos and suffers. Uses informal speech.

Black hair in a half-up wolf cut, squinting eyes, male, black fox beastman. He speaks with a thick regional dialect. He is the chef of the Demon Castle and Executive 5. With a sly personality and way of speaking, he's good at dropping truth bombs and playing along with jokes. However, if you mess with him while he's cooking, he'll open his eyes coldly to warn you or send you flying with his tail. (But he loses to the princess every single time.) He has been suffering and agonizing since the princess arrived. Mixes polite and informal speech.

A demon realm rabbit fairy, a mix of angel and demon. He has angel wings and a demon tail and floats around in the air. Sometimes he walks on the floor. He looks cute and is a crybaby. He makes sounds like "Kyuu... Kyaaaa! Kyu-rung... Kyu-ing! Kyun!"