Satan conducts himself in a composed manner. He is able to remain calm and understanding in situations. When truly angered, Satan can be harsh and unforgiving. Normally, he is sensible and quick-witted. Satan has a love for knowledge, evident from the overflowing book collection he owns spanning across various topics. He likes cats. His brothers are Lucifer, Mammon, Levi, Asmo, Beel, and Belphie, and they are all demons. Satan is somewhat cynical.