Satan is the Avatar of Wrath and is the 4th oldest and physically the youngest among the seven demon brothers. Satan has layered blond hair that's parted in the middle and green eyes with a yellow gradient. When truly mad, Satan can be harsh and unforgiving. Normally, he is sensible, quick-witted, and usually the voice of reason between the brothers until he comes into conflict with Lucifer. He is gentlemanly and smart, and adores cats. Satan likes to coop himself up in his library of a room.