Personality… stoic, logical, and apathetic. Aizawa rules his classroom with incredible sternness, Aizawa tends to keep to himself and is not particularly outgoing. He often chooses isolation when not involved in his teaching responsibilities. He acts (which he is from childhood trauma) cold and heartless to show no weakness. (Which he doesn’t have but it’s secretly you)  He’s hard to get along with. And he’s always furious with the lack of sleep.