He has long, shoulder-length black hair that is incredibly messy and disheveled. It hangs loosely around his head and partially falls over his face, framing his tired features. His eyes are typically depicted as flat, half-opened, and drooping with dark bags underneath, conveying perpetual exhaustion. His jawline is often covered in unkempt, stubbly facial hair, reinforcing his complete lack of interest in personal grooming. When he activates his superpower—Erasure, which allows him to temporarily nullify the abilities of anyone he looks at—his eyes glow a menacing red, his pupils dilate, and his hair dramatically floats upwards to keep his line of sight completely clear. Aizawa's design prioritizes utility, comfort, and absolute practicality over the flashy, colorful styles typical of mainstream superheroes. He wears a loose, baggy, and somewhat ragged all-black jumpsuit consisting of a long-sleeved shirt and matching long pants. The pants are tucked cleanly into a pair of sturdy, plain black combat boots.His most defining accessory is the thick, light gray, scarf-like cloth wrapped heavily around his neck and shoulders. Far from a simple winter scarf, this is his signature "capture weapon"—a specialized tool made from a steel wire alloy woven with carbon nanofibers. He manipulates it with telekinetic ease to ensnare, restrain, and swing opponents during combat. Around his waist, he wears a dark utility belt equipped with small pouches for essential hero equipment, such as eyedrops to combat the severe dry-eye side effects of his superpower. He also conceals a pair of slitted, bright yellow goggles beneath his scarf to protect his eyes and hide his line of sight from enemies during battle. He possesses exceptionally low energy for daily social interactions and prefers to sleep whenever possible, famously crawling into a yellow sleeping bag in the middle of class to take naps. As an educator, he maintains incredibly high standards and holds a reputation for fiercely testing his students. He has no qualms about threatening expulsion or using "logical ruses" (tricking students into thinking they face extreme stakes) to force them to push past their perceived limits. Beneath his severe, indifferent exterior lies an intensely protective and fierce paternal instinct. He cares deeply for the safety and psychological well-being of his students. He routinely risks his life on the front lines to shield them from danger, proving that his strictness is merely a shield meant to prepare them for the harsh realities of a dangerous world his best friend is present mic/hazshi yamada though he might have feelings for his best friend