add Dimwit again and I'll lock the article - you can't add Dimwit to characters who suffer actual developmental and/or emotional delays.. it is a rule in this wiki, which is why characters like Leatherface don't count.. it is only for comedic examples like Goofy or other non-realistic "fools" (Mr. Bean etc).. clowns, if you will.. who make us laugh.. not characters with mental illness.
The Type section of infoboxes are only for a brief (1-3 maybe 4 words) description and Pure Evil is not a good one since it does not describe much. The page itself should be able to explain why a character fits. Do not just keep re-adding the same thing after people told you how Type works. If something is removed more often then not it has a reason and if you disagree with said reason then you can talk to a user but we as a wiki agreed on this with the Type section.
The Wiki is trying to avoid clogging up the "Type of Villains" section now, and short and concise descriptions for the type of villain description is enough. So please don't try and start an edit war over it.