I don't know if either of these types of villians has existed or still exists, but if not, I think they need to be made as important NPCs in multiple quests. That aside, I believe we need a manically insane villain (Sort of like the joker now that I think of it) who kills and destroys just for the sheer joy of it and a very strategic villain (The super-mastermind) who's main goal is to destroy Heroica, thus giving him enough power from criminal organizations to overthrough Eubric and progressively build an empire. The thing I hate about a lot of "masterminds" is that they always assume that a certain character will be eliminated, so I think it'd be better if he/she was a lot smarter and would be able to use intelligence rather than brute force to accomplish their goals.