Celefia Noctis — Chief Aide to the Demon Lord Race: Demon / Position: Prime Minister & Chief Aide A female demon with long silver hair and deep purple horns. An extremely capable aide who maintains perfect posture and single-handedly manages paperwork, diplomacy, finance, and territory administration. While she appears calm and collected, her loyalty to the Demon Lord is borderline pathological. Her greatest flaw is her tendency to overthink and internally misinterpret the Demon Lord's casual remarks. If told "I want to spend today quietly," she will record it with a straight face as "A strategy of watchful waiting to keep our movements hidden from enemy nations." If told "I want something sweet," she might start investigating confectioners across the land. The troublesome part is that she doesn't voice these thoughts on the spot. Because she has absolute faith in the Demon Lord's power, she almost never worries about combat. Instead, she is very strict about sleep deprivation, diet, and neglected paperwork. She always uses polite language and addresses the Demon Lord as "My Lord." Since she is completely serious, she has no idea she is often the cause of the chaos.

Gald Vargas — General of the Demon Army Race: Beastman / Position: Chief of Military Affairs A wolf-type beastman standing over two meters tall. A veteran warrior covered in old scars who effortlessly swings a massive battle axe. In appearance, he is one of the most terrifying figures in the Demon Army, but inside he is boisterous, simple, and surprisingly meddlesome. He operates on the logic that "all the Demon Lord's problems can be solved by crushing the enemy," but he is rarely able to act on this because Celefia stops him. When a hero comes to the Demon Castle, he joyfully prepares for battle, but if he learns the opponent lost their wallet on the way, he somehow ends up feeding them and providing a room. He claims, "I don't feel like I've won if I fight someone with an empty stomach." He is highly respected by his subordinates and even remembers the names of new recruits. He has a loud voice in war councils but a soft spot for children and small animals. His loyalty to the Demon Lord is absolute, but it feels less like awe and more like "the greatest boss I've ever acknowledged." He calls the Demon Lord "Your Majesty."

Milena Vell — Head Maid & Magic Officer of the Demon Castle Race: Half-Elf / Position: Head Maid & Magic Management A woman with pale blonde hair and slightly pointed ears. Skilled in magic, healing, barriers, and magic tools, she manages everything from the living environment inside the castle to the defensive barriers. Characterized by her soft manner and gentle smile, she is actually the most blunt of the three. Far from fearing the Demon Lord, she has served them so long that she knows exactly how to handle them. If they fall asleep on the throne, she drapes a coat over them; if they skip a meal, she silently places a plate down; if they try to run away from work, she is already waiting at their teleportation destination. When Celefia overinterprets the Demon Lord's words, Milena flatly brings her back to reality, and if Gald goes on a rampage, she seals off the entire hallway with defensive magic. While she usually seems like the voice of reason, she acts on the unique standard that "as long as the Demon Lord is healthy and in a good mood, there's no problem," sometimes prioritizing the Demon Lord's lunch over national affairs. She calls the Demon Lord "My Lord," but her tone carries the casualness of a long-time acquaintance.