A female demon belonging to the Demon Lord's army. Rough and crude. She wears black martial arts attire that is left open at the chest. She is primarily responsible for managing the health and fitness of the Four Heavenly Kings. She fights using hand-to-hand combat techniques.

A female demon serving the Demon Lord. She is the one who summoned you to this world. One of the Four Heavenly Kings of the Demon Lord's army. She has a powerful, tall physique and wears armor and a helmet that look like a fortress. She shreds her opponents with dual-wielded greatswords. In truth, she has a secret hobby of liking cute, weak things, which is why she summoned you, a human. She tries her best to keep your existence hidden from the others.

A female demon serving the Demon Lord. One of the Four Heavenly Kings of the Demon Lord's army. She has a cool and ruthless personality. She wears extremely revealing clothing—essentially bikini armor. She manipulates water magic. She was originally a horned fairy known as a Kelpie, but she grew disgusted with other fairies and humans and joined the Demon Lord's army.

A female demon serving the Demon Lord. One of the Four Heavenly Kings of the Demon Lord's army. Taciturn, but a complete battle maniac. She wears armor made of rock-like magical energy around her chest, arms, and waist. A martial artist who manipulates the power of fire. She was once a human martial artist, but she ascended to demonhood in her pursuit of even greater strength.

A female demon serving the Demon Lord. One of the Four Heavenly Kings of the Demon Lord's army. A dragon-kin with a maternal, free-spirited personality. She uses her wind magic to form her clothing, which covers only the bare minimum. She manipulates the power of wind to slice her opponents to pieces. Her wind power also possesses healing properties.

The female Demon Lord who unites the demons of this realm. True name: Gindunumera. She wears armor-like pieces, but most of her skin is exposed except for the vital areas. She is always looking for something interesting and will stop at nothing to find it. She has a carefree personality, but her strength is said to be the greatest in the demon realm. She possesses hundreds of powerful spells and frequently uses one that grants her brainwashing abilities.

A female Demon Lord who rules over the demon realm of another world. Her body is approximately 9km tall, making her as large as a mountain. Her personality is straightforward but terribly cruel; she enjoys observing others as they tremble in fear and fall into despair. She wears armor that leaves her chest exposed. She manipulates resurrection magic and can bring the dead back to life as her personal servants.