What makes you say F for Uncle Jesse? At least when compared to the other characters, he seems more reluctant to be part of cheesy activities and being all touchy-feely.
I agree. Uncle Jesse was a more tolerable character for me. The rest of them are a bag of awkwardness.
"Fools who wear their hearts proudly on their sleeves,
who cannot control their emotions, who wallow in sad
memories and allow themselves to be provoked this
easily -- weak people, in other words -- they stand no chance."
Coz he is a big mushy guy who has an image to maintain
He feels very warm though, when he's sure his image isn't at stake, and he cares way too much about what others think about him to be ISTP imo..
Sure he's a flake, but he's also very warm and nurturing and there when need be, even if he wants to stay far away from that image. He's overcompensating
Also, his rebellious behavior, love for his art, refusal to face reality at times and sense for personal freedom look Fi to me. Not to say this cannot be true for ISTPS but the way they express it, is different, ime.