Why does everyone think he is introverted? He might just do the introverted dance
because of necessity. Just a thought, otherwise I agree with the INTJ thing... He's so much J that any german militaryman would get a hardon.
I know a couple of INTJ's in real life, very well. But seriously, wouldn't the typical INTJ be a little less socially skilled...? C'mmon, it's an INTJ trademark to offend people and not go passed unnoticed Dexter is way too much of a smooth operator somehow.
Is this learned behavior, maybe?