Actually, it seems like most of the magical bullshit is centered around Beach City. As long as you stay away from there and from any wilderness areas with large, imposing crystalline ruins it seems to me like you'd be fine.
As to the thread theme, I'd also say Greg Universe. He may not be able to keep up with all the magical bullshit and may not be that tall/smart/etc. But he genuinely cares for his son.
As far as, "the Dad that didn't get custody" sort of character, I think Greg is one of the most positive examples that you'll find.