Aizawa Shouta

Aizawa stands just over 6ft (1.83m) tall with a slim but muscular build. He has long, black shoulder-length hair that floats when his quirk is active and black eyes that glow green in the manga and red in the anime when using his quirk. He has a large scar under his right eye after the USJ incident and gains a vertical scar a ross the same eye after the Paranormal Liberation War. He wears an eyepatch over his right eye after losing it. He usually has stubble on his face and chin. His hero costume is a black top and pants that look like a one piece jumpsuit. He wears a utility belt, black boots and a white rope-like cloth called a capture weapon coiled around his neck. He wears yellow goggles over his eyes to make it harder for villains to see who he’s using his quirk on. After losing his right leg, he got a prosthetic to replace it.

Aizawa is a very strict and reserved person, with high expectations of his students. He acts mainly by logic and does not believe in the need to always appear clean on oneself, or to filter his words and ideas. He often looks cold, listless, and impatient, putting very little energy into what he does, preferring to take naps in his sleeping bag. He doesn’t always even eat a good meal, as he’s sometimes seen slurping pre-made jelly packets instead. A strict teacher, Aizawa is known to fire students he thinks don't fit in U.A. However, it is revealed that his high dismissal rate is only on paper, he has a habit of bringing back fired students. Shoto only does this to push them up. He can also be rigid and has little tolerance for disobedient behavior. He's not afraid to push his high school students through rigorous training and make them overcome their limits. Aizawa has proven that he can be very talkative and is not shy about expressing his ideas. He is known to lie to his students, manipulating them into giving their best, a technique he describes as "a logical ruse" "a rational deception". Despite his apathetic features, Aizawa cares about his students and doesn't hesitate to give anything to protect them, such as when he saved Tsuyu Asui when he was already badly injured. He also showed that he believed in his high school students, and was even confident that Katsuki Bakugo would not go over to the Villains. Recovery Girl also insinuated that during a test, he let himself be captured by Momo Yaoyorozu in order to boost his self-confidence.

Named after his quirk, Erasure, Eraser Head can negate usage of the quirk possessed by whomever he makes eye contact with. for as long as he can last without blinking. Blinking will allow the target to use their quirk again; this is why Aizawa carries eye drops with him, as well as many other objects. After losing an eye to Shigaraki in the Paranormal Liberation War arc, he can no longer use Erasure effectively as his control is shaky and his remaining eye can’t keep it active very long.