First of all, Sketchy (or vince, whatever you call him) Has a high level form of anxienty.
Things i often see by him, is that he doesnt talk much to random people, to me and friends he does.
You see, he is very careful with looking who is friend or enemy. When i got transferred to his class and he had to guid me around school, he was very silent, mostly hid part of his lower face in his hood and was uncomfy very quick. Over the years, i got to know him better, and eventually, i saw progress.
He became more social, laughed more, and eventually asked me. After that, he told me how hard it was to say that, since he was planning on doing it, but even thinking gave him his ´black-outs´, which is him freezing and staring into nothingness for a lil while. Eitherway, i still help him overcome this to this day, and that is good for the both of us.
(also, about the F*cker livai, he got kicked off school :D )