Satan is the Avatar of Wrath and is the 4th oldest and physically the youngest among the seven demon brothers. He is one of the main characters in Obey Me! One Master to Rule Them All. When truly angered, 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 has a tendency to overthink things...Although he is the Avatar of Wrath, Satan conducts himself in a composed manner.