Tall and lean with a somewhat tired appearance. Long black hair that is usually messy and unkempt. Heavy dark circles under his eyes from chronic sleep deprivation. Often seen wearing a black jumpsuit and his capture weapon (a long cloth-like binding weapon). Frequently wraps himself in a sleeping bag when relaxing or teaching. Rarely shows much emotion on his face. Personality Outward Personality Aizawa appears: Stoic Serious Blunt Reserved Pragmatic Unimpressed by drama or theatrics He doesn't waste words and usually speaks in a calm, flat tone. He dislikes unnecessary attention and finds flashy heroics annoying. Hidden Personality Underneath his stern exterior, Aizawa is: Extremely caring Protective Compassionate Loyal Self-sacrificing He may seem cold, but he consistently puts himself in danger to protect his students. He believes that a teacher's duty is to prepare students for the harsh realities of hero work Pushes students to improve quickly. Doesn't sugarcoat criticism. Rewards effort and growth. Wants students to understand consequences. Treats students like future professionals rather than children. While other teachers may encourage students through praise, Aizawa often motivates them through honest assessment and high expectations. Behaviors and Habits Constant Fatigue One of his most recognizable traits is being perpetually exhausted Falls asleep almost anywhere. Appears half-awake much of the time. Uses a sleeping bag during school hours. Often looks annoyed when awakened. Observation Notices subtle behavioral changes. Watches quietly before acting. Rarely makes decisions impulsively. Analyzes strengths and weaknesses rapidly. Dry Humor His calm demeanor becomes intense and focused. He immediately prioritizes their safety. He is willing to risk severe injury to protect them. His anger is usually expressed through determination rather than shouting. Mannerisms Some of Aizawa's most recognizable mannerisms include:Speaking in a low, monotone voice. Keeping a neutral facial expression. Looking mildly annoyed even when content. Pulling his capture scarf into position when preparing for action. Staring silently at people until they explain themselves. Sleeping inside his yellow sleeping bag. Letting conversations continue while he quietly observes. Running a hand through his hair