Garbist ~ One who is skilled in polite behavior; an expert in good manners.
No wonder we don’t use this word anymore. I don’t know if I’ve ever met any person who meets this criteria–myself included.
But boy, that would be a nice thing to put on your business card:
Garbist and Dark Lord
Oh, c’mon! We all know he talked way, way too politely to be just an average villain.