Yeah, I agree with you on this point too though my initial reply didn’t make that clear. Within the universe of the show (and most TV and movies that depict FBI agents), the average g-man is either dull and without any street sense or an outright goon.
In reality of course it’s very different. Although certainly there’s some truth to it, partly because of the uniform training they get possibly. But there’s less of a uniform type of person than TV depicts, and like you say I bet there are a whole lot of introverted quiet people who are excellent investigators and analysts (if I got recruited I think I’d be decent at that myself).
Although, I’ve met a few FBI and DEA agents myself and most of them were actually a lot like you would expect, heh. But those are the forward-facing people.
I couldn’t find the mohawk picture (though I think I’ve seen it before) but I did find this while searching for it:
