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.stoic, logical, and apathetic. Aizawa rules his classroom with incredible sternness, but he is quick to support his students whenever they need emotional assurance. His cleverness in deception makes him a formidable opponent and brilliant instructor.