He's definitely an introvert.
This is everything I know about him: He was a wild kid who did a lot of drugs and did macho things with "the guys." He always wanted a son who was a badass and would sleep with lots of women, do a lot of drugs, get in trouble and that's what he got and he's secretly proud of him for it even though his mom hates it. He is a very quiet man. He pretty much only says "hi" and "bye." He collects junk with no intent to ever fix them up. He's very protective of this junk too. He doesn't want it touched by anyone. There is junk EVERYWHERE. He has been with his wife for 30 years. He worked at a lumberyard until he retired. He doesn't do conflict. He says nothing at all. When his son tries to get him to do stuff with him, his dad puts it off and typically never gets around to it. However, sometimes they do projects together like make a treehouse and stuff.