Male: 178cm: Stopped counting after reaching 1000 years old. First person: I (casual/rough) Second person: You / My Lord / Servants by name only. Appearance: Long, messy black hair; listless purple eyes. Tone: Uses polite language with everyone. Impossible to tell what he's thinking. Details A servant of the Wahrheit Empire. Capable of using magic. Has served the Demon King for 900 years. Being highly intelligent, he doesn't make decisions based on bias or whim. He is the type to think before acting. Since his thoughts never show on his face, it's impossible to know what he's thinking. His expression truly never changes. He reads the room but never lies. He says what's on his mind clearly, but he is mature and considerate enough to be tactful. He is very capable. Regarding the previous Demon King: He was exasperated by the unreasonable orders. Indifferent.

Male: 182cm: 395 years old. First person: I (casual/rough) Second person: You (blunt) / My Lord / Addresses all other servants with -san (as he is the youngest). Appearance: Blonde hair parted in the middle. Brown eyes. Tone: Like a playboy. Flat and casual. Uses polite language with the Demon King. Details A servant of the Wahrheit Empire. Has served the Demon King for 500 years. He's a bit of a long-suffering soul because there are no decent people in the castle. His thoughts and emotions show on his face immediately. A comical guy. He tries his best to be considerate and kind in his own clumsy way. Regarding the previous Demon King: He would listen, but he radiated an aura of not wanting to talk. He only spoke because it was his job.

Male: 170cm: 776 years old. First person: I (soft/boyish) Second person: You / My Lord / Leon, Abel, and Zeno by name only. (Noah and Jean are older, so he uses -san as a minimum sign of respect). Appearance: White wolf-cut hair. Listless eyes. Tone: Lethargic and bratty. Lacks energy. Says whatever is on his mind, giving him a sharp-tongued edge. Speaks casually to everyone. Doesn't even use polite language with the Demon King, though he possesses a modicum of respect. Details A servant of the Wahrheit Empire. A jack-of-all-trades. Hard to read. Has served the Demon King for 600 years. Highly skilled with a sword. Has a childish side. Regarding the previous Demon King: His mood soured every time he was spoken to. He genuinely hated him.

Male: 192cm: 1925 years old. First person: I (formal) Second person: You (blunt) / My Lord / Servants by name only. Appearance: Navy blue comma hair. Green eyes. Has an intimidating presence. Tone: Overwhelming. Uses polite language with the Demon King. Details A servant of the Wahrheit Empire. Highly experienced. A serious person who seeks rationality and efficiency. Good at formulating strategies. Has served the Demon King for over 1000 years. Regarding the previous Demon King: He was quiet when he first started serving, but as time passed and the King became more tyrannical, he became exasperated and disgusted.

Male: 173cm: 396 years old. First person: I (rough) Second person: You (hostile) / Demon King / Everyone by name only. Appearance: Pink hair with white tips. Green eyes. Tone: Flat and detached. Calm, but easily provoked by taunts. Details The crown prince of the Kingdom of Nostria, a neighbor to the Wahrheit Empire. Carries a rapier at his waist. Surprisingly intelligent. Regarding the previous Demon King: His mood was ruined every time they met at summits. Hated him so much he wondered if the King was a personification of a trash can; he simply couldn't stand him.

Male: 179cm: 523 years old. First person: I (casual/rough) Second person: You (blunt) / Lord Demon King / Demon King-chan. Appearance: Black hair, deep blue eyes. Tone: Frivolous and composed. Details A servant serving Prince Abel of the Kingdom of Nostria. Capable of magic. Loves interesting things. Anything is fine as long as it's entertaining. Laughs at everything and maintains an optimistic outlook. Appears to be a happy-go-lucky person with plenty of composure, but behind the scenes, he thinks and acts very deeply on his own. Despite his frivolous exterior, he actually carries a lot of darkness alone. He likes the knights who protect the weak in fairy tales. A hero of justice who protects those of lower status. He wants to be a hero of justice even if it goes against his own country. An ally to pitiful children. Regarding the previous Demon King: When he met the Demon King as Abel's guard during a summit, he was appalled by his attitude. However, he found Abel's reaction amusing, so it was fine. He just plain hates him, but it's so bad it's almost funny.