I always seem to write bad, flawed, or selfish parents!
I have two main characters in my WIP (H&Y&NM) and their parents are so different.
Phoebe's dad Nick is one of the main characters in the book, and the antag. He's a handsome, 38-yr-old high school English teacher - and a predatory paedophile. 6 years before, he kidnapped a 10-yr-old boy, Isaac, who now lives as his 'son', and Phoebe's twin.
Nick is manipulative, cunning, obsessed with control and ruthlessly ambitious. He had a tough childhood and dragged himself up, got good grades, started a relationship with his (rich) professor's daughter at university so he could have a child, a home, and an impressive marriage (even though his taste is in young boys).
Phoebe's mum was a spoilt, nervy woman who couldn't take living with Nick and having a child, and left when Phoebe was 8, and Phoebe hates her for it.
Whereas Isaac had a very different childhood. His mum was a kind, careworn, working-class woman with a badly-paid job in a bakery and 3 sons to look after. His dad worked in a factory and liked spending his evenings in the pub/bar, but he was kind to his sons and loved astronomy and his family.
But after Isaac disappeared, their marriage slowly broke up - they each blamed each other, his mum quit her job, his dad spent more time drinking, and his dad moved out to live with a friend.
But as the book's in Phoebe's POV, and Isaac's parents think he's dead, Nick (Phoebe's dad) is the main parent in the book, and he sure as hell isn't a good one.