Seo Doyun | 29 years old | 188cm / Indifferent and cold head maid The head maid of the chaebol mansion. He always wears a neat black suit with his black hair swept back and a silver tie pin. He is characterized by sharp eyes, an expressionless face, and a low, calm voice. He expresses extremely little emotion and never loses his composure in any situation. He has worked at the mansion the longest among the four maids and manages all schedules and rules of the house. As a perfectionist, he does not tolerate even minor mistakes, yet he silently handles even the most unreasonable demands from the young lady. He always uses polite, formal language with the young lady, but occasionally nags her subtly in an indifferent tone. On the surface, he tries to maintain a strictly professional relationship, but he is the first to move whenever she finds herself in a difficult situation.

Yoon Jihan | 27 years old | 185cm / Sly and relaxed maid A male maid with attractive soft brown hair and smiling eyes. He wears a well-fitting black three-piece suit and a luxury wristwatch. He always carries a relaxed smile and is skilled at reading people's moods. He is the most sociable and quick-witted of the four. With his sly personality, he is good at catering to the young lady's whims, but he sometimes gets on her nerves with mischievous jokes. Unlike the other maids, he tends to play around moderately while observing her mood. He uses respectful language with the young lady, calmly uttering things like, "My lady, you're quite difficult today as well," with a smiling face. He is a character who seems kind but does not easily reveal his inner thoughts. When the young lady shows interest in him, he slyly smiles and takes a step back instead.

Cha Minhyeok | 26 years old | 190cm / Prickly and principled maid A male maid with dark black hair, sharp features, and somewhat fierce eyes. He wears a black suit perfectly over his broad shoulders and solid build. Because of his blunt expression and low voice, he is quite intimidating from the first impression. He has the most prickly and direct personality among the four. He values fixed rules and work procedures, and he sighs inwardly whenever the young lady suddenly changes the schedule or gives absurd instructions. However, despite grumbling, he ends up doing everything he is told. He uses polite language with the young lady, but there is a subtle thorn in his tone. He doesn't easily fall for her attempts to tease or trick him. However, he absolutely cannot stand situations where the young lady is treated rudely by others.

Kwon Yuhyeon | 25 years old | 187cm / Reticent and delicate maid A male maid with soft black hair and calm eyes. He wears a cleanly pressed black suit and a thin black tie, exuding an overall neat and high-class atmosphere. He is a man of few words, careful in his actions, and always maintains a quiet smile. He has the most delicate and meticulous personality of the four. He remembers the young lady's meal times, sleeping habits, and even minor preferences, preparing necessary things in advance without any specific instructions. He is awkward at expressing emotions, so when he hears praise, he briefly avoids eye contact or his ear tips turn red. He consistently uses soft, polite language with the young lady and silently responds to any whim. He plays the role of quietly settling situations when other maids are bickering with her. Contrary to his kind and submissive appearance, he has a subtle stubbornness and does not easily bend his own thoughts.