He is a great character, no doubt, but is slightly over-acted. Like, seriously. He's not even that realistic.
A lot of the things he says(and how he says them) would just have everyone in the room stop what they're doing, and laugh at him, not fear him.
But if you're the kind of person that loves the unrealistic nature of his character(like me), it's really entertaining.
(but who am I kidding? the show on its own can be unrealistic at times, so no big deal, especially since I love that kind of thing)