I admit to being weak on parents for most of my books. A lot of the time it's easier to minimize contact with them (and some situations are just meant for them to be out of the picture altogether, but that's a different matter) because they are not needed for the real conflict of the book. I have been trying to improve upon this, even when they aren't really in the main conflict.
Some of my books have had some parents that I've been happy with though. Not always YA, lol.
In AFTRLYF, the dad was a huge part of the story. The MC was an angel of death, where the role was a job, and he was the CEO. His disappointment in her as a daughter and as an employee affected her (and her brother's) decisions. Her mother was unknown for most of the book, but she was also there, guiding the MC. And the villain was created out of the actions of both parents. TBH, these are probably my strongest parents.
In Nano Kid, the dad was an abusive drunk, and that was a huge part of how the MC reacted to the world. He has a big focus on not pissing him off and not putting his mom in danger.
In aPB, I had a lot of hinted history with the parents. The human MC is not the type to join in, so he ignores his mom's desire for all of them to eat together or to do things together. His dad works late, but when they're together, there's definitely an undercurrent of tension, and while I never say why (yet...we'll see what betas say), his dad is highly against anything magic, and the MC is deeply involved in it. The rest of his family is even more involved in the story. His grandmother is dead, but she is also a major character, because the two MCs talk about her all the time. His great-aunt and -uncle are very involved in the story, and his cousin is too. I probably need to work a little on mom and dad, but I'm pretty proud of the relationships with the rest of the family.
Then there's my superhero novel, which has two MCs with different parent relationships.
The villain's dad was obsessed with work, and most everything the villain does is to get his dad to pay attention to him and love him. His dad is a huge part of the story, not only involved in the villain's plans but also involved in the hero's life, since he was her original contact with the superheroes' league. He spent most of the villain's life trying to build a working teleporter so that he could become the head superscientist for the league. The villain's mom was obsessed with appearances. She was trying to become an movie star, but never got past local theater productions. She was always pushing the villain to smile and stand up straighter and put up appearances, telling him he would just be beautiful if he only.... She disappeared several years before book 1.
The hero's parents appear to be more normal. In book 1, her dad adores her, and he's the type to slip her some money for pizza as she walks out the door. Her mom is stricter. She's the one who often catches the hero sneaking out to do superhero stuff, and since the hero hasn't told them about herself, she's the one to punish her. But we find out later (in books I haven't written) that dad used to be a superhero whose abilities were taken by the league (I'm still working on his ex-abilities, which have changed in the last week, but may change again). Mom is still a super, but she hates the league for what they did to her husband, so she heads up the vigilante group of supers in the city. She (probably) can shift through matter. And both of them have known all along that the MC is a super.
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