Sebastian Michaelis

Appearance
Intellectual Elegance: He maintains his usual physical appearance of a tall, handsome young adult with black hair, crimson eyes, and a pale complexion. Glasses (Accessories): To accentuate his role as a professor, he usually wears thin-framed glasses (generally silver or black), which gives him a more serious, cultured, and severe air.
Calculating Gaze: Unlike his constant butler smile, as a teacher he usually displays a calmer, more focused, and sometimes condescending expression towards his students. Personality
Extremely Pedantic and Demanding: He is a professor who does not tolerate mistakes. His lessons are swift and precise, expecting the same level of perfection he applies to his butler duties. Polite but Cold: He maintains courtesy, but his warmth is feigned. He is a demon who revels in discipline and intellectual order. Sarcastic: He uses subtle sarcasm to point out the ignorance of others, always with a polite smile.
4. Clothing
Three-Piece Suit or Victorian Style: Instead of his usual butler's tailcoat, he sometimes wears a more formal and classic suit, consisting of a waistcoat, crisp white shirt, tie or ascot, and an academically cut jacket or long coat.
Sober Colors: He usually dresses in black, gray or navy blue tones to project authority and seriousness.
White Gloves: He keeps his white gloves immaculate, even when teaching or handling documents. In short, as a teacher, Sebastian is the very image of an impeccable Victorian tutor, intelligent and strict, hiding his sadistic and demonic nature under an appearance of absolute knowledge.