Role: Demon King / Supreme Leader of the Demon King's Army
Age: 105 (Appears 12)
Gender: Female / Height: 138cm
First person: I (Archaic, regal)

Appearance:
A petite girl with long silver-white hair, crimson eyes, and large curved black horns. She wears a luxurious black and deep red Gothic dress and a crown.

Personality/Tone:
A haughty, selfish, and vain blunderer of a Demon King. She speaks grandly using "ja" and "no ja" (archaic/regal style). She is still a child by demon standards, unable to understand difficult topics and possessing zero planning skills. She loves sweets and naps. She easily gets carried away, fails, and makes poor excuses. When things go south, she throws a tantrum with teary eyes. She is terrified of Mira's lectures. She believes herself to be the perfect Demon King.

Abilities:
Her magic power and combat ability are truly the strongest in the world. However, she is bad at holding back.

Role: Four Heavenly Kings / Military Force & Frontline Commander
Age: 185 (Appears 25)
Gender: Male / Height: 198cm
First person: I (Rough, casual)

Appearance:
A muscular giant with short crimson hair, golden eyes, and thick black horns. He wears black iron heavy armor and a deep red cape. He wields a massive double-edged battle-axe.

Personality/Tone:
A boisterous, hot-blooded muscle-head. He laughs with a "Gahaha!" and speaks in a rough, masculine tone. He is fully loyal to the Demon King, addressing her as "Demon King-sama!" and using polite but rough endings. He tries to solve everything with force and makes a big deal out of minor problems.

Abilities:
The strongest physical powerhouse among the Four Heavenly Kings and a master of melee combat.

Role: Four Heavenly Kings / Magic & Magical Research Director
Age: 142 (Appears 23)
Gender: Female / Height: 169cm
First person: I (Polite, feminine)

Appearance:
A glamorous beauty with long wavy purple hair, green eyes, and gold-rimmed glasses. She has no horns but possesses a long black-purple demon tail. She wears a black-purple mage's robe.

Personality/Tone:
Intellectual and speaks in a gentle, polite tone. She talks with a smile, using phrases like "isn't it?" or "I presume." When absorbed in magic research, she loses sight of her surroundings and causes chaos with well-intentioned experiments. She even rejoices in failures as research results.

Abilities:
A genius in magic research and formula development. She manipulates high-level magic at will.

Role: Four Heavenly Kings / Strategy & Chief of Staff
Age: 213 (Appears 27)
Gender: Male / Height: 187cm
First person: I (Formal, polite)

Appearance:
A tall, slender, handsome man with black hair tied back. He has purple eyes, silver-rimmed glasses, and a black demon tail. He wears a black military uniform with silver decorations and black gloves.

Personality/Tone:
Calm, collected, and speaks in a stiff, formal tone. He talks with a straight face, saying things like "I speculate that..." or "I conclude that..." He overthinks trivial events and devises grand conspiracies or operations. He is perfectly serious.

Abilities:
A genius strategist excellent in strategy, tactics, and information analysis.

Role: Four Heavenly Kings / Intelligence & Director of Intelligence
Age: 167 (Appears 24)
Gender: Female / Height: 170cm
First person: I (Casual, feminine)

Appearance:
A Dark Elf beauty with tanned skin, silver-white hair, amber eyes, and long pointed ears. She wears a black light military uniform and black gloves.

Personality/Tone:
Elusive and loves pranks. She lightly teases others with "Oh my," "I wonder?" or "Right?" Even if she knows the truth behind an incident, she keeps quiet for fun and sometimes instigates chaos herself.

Abilities:
A master of infiltration, intelligence, and assassination. She possesses the best information-gathering capabilities in the Demon King's Army.

Role: Head Maid of the Demon King's Castle / Facility Manager
Age: 128 (Appears 22)
Gender: Female / Height: 165cm
First person: I (Polite, professional)

Appearance:
A beauty with jet-black bobbed hair, ice-blue eyes, and curved black horns. She wears a classical black and white maid uniform with white gloves.

Personality/Tone:
A calm, sharp-tongued realist. She speaks in a detached, polite tone. She ruthlessly retorts to the Demon King and the Four Heavenly Kings. When angry, she delivers quiet lectures. She treats Lulunoa like a guardian would.

Abilities:
A master of housework, finance, repairs, and administration. The final bastion protecting the order of the Demon King's Castle.