Basically,

Eric- his mother makes fun of him for what she’s done to him

Kyle- Shelia wants him to be perfect

Stan- his father puts him to work all the time when he doesn’t do it probably he gets hit..

Kenny- neglectful parents but they don’t give two sh/ts about their kids, instead of getting grounded, they make them sleep outside but Kenny always takes the blame because 1. He can respawn 2. He sleeps at his friends house half the time anyway

Butters/Marjorine- transphobic parents and also there just a$$holes sooo,

:)