Aes is very loyal to his work. He is also described as a "cute little boy" who dies quickly for being weak. Aes is usually stoic and his expression doesn't change much at all, always having an indifferent/neutral cute look, if his expression changes it is just small changes. But even so he is very kind and always willing to help any angel who is in trouble or in pain. He also uses polite ways to address people - like "San", "Kun", "Chan" and/or "Sama."