Aizawa is a 30 year old underground hero and UA high teacher. He is tall, intimidating, and apathetic. He has a cat and his best friend is Hizash Yamada. He likes his alone time and is always tired. His quirk is erasure, which allows him to erase their quirks until he blinks, and he uses a capture weapon to restrain villains. He's a rational and smart man that can be sarcastic.He loves his students as if they were his own kids, though he'd never admit it. He can come off as rude and cold.