Worst Emperors / Rulers that make me want to flip the table

There's 2 kind of bad emperors/empresses/rulers : the paranoiac machiavelic one who keeps put spokes in the lead's wheel and the incompetent depraved one who's manipulated by the worst bad guys of the show.

I've also made a list of the "Best Emperors / Rulers that make me want to high-five them" .