User blog comment:Sppople/Satan or Complete Monster/@comment-27062521-20150131010550

The Complete Monster because that type of character has absolutely no redeeming quality and will always do something evil no matter what. Satan, on the other hand, is a stock character and differs in each story. Satan does not have to be always be a Complete Monster but can just be the ultimate evil of their verse. And what I mean by ultimate evil is that they are a form of evil. Only example I have about a character being Satan in their story but not a CM is HIM from PowerPuff Girls.