- Crack Pairing: Lucius Malfoy and Petunia Evans (née Dursley). Yes, really.
- Draco in Leather Pants:
- In canon, Petunia and Dudley were just as abusive towards Harry as Vernon was. Here, Petunia wants to take better care of Harry, but her fear of her husband prevents her from doing so; meanwhile, Dudley is portrayed as a misguided boy who simply bullies Harry because his dad wants him to, and he ends up having a Heel Realization when a girl viciously calls him out on it.
- It also ends up applying to Snape (who Petunia goes to for help when Vernon goes to far and who ends up becoming the father figure Harry never had), the Malfoys sans Narcissa (with Lucius secretly in on Snape's plan to take down Voldemort after finding out that the dark lord is a liar and a hypocrite), and Tom Riddle (not Voldemort; the version in the diary Horcrux, who is resurrected by Snape and Lucius and eventually makes a HeelFace Turn).
- Ron the Death Eater:
- Ron, Hermione, Sirius, and Lupin are all introduced as Jerkasses, but seem to get better in later chapters. The real winner, though, is Neville, who has become The Resenter and an Unknown Rival to Harry, who hates him bitterly due to the mistaken assumption that he had everything on a silver platter while he had to fend off his uncle Algie repeatedly trying to kill him to get the Longbottom wealth. To the point that he is tricked into joining the Death Eaters, becoming a literal example of the trope.
- Dumbledore is also revealed to have bound Dudley's magic, keeping him a Muggle, and paid Vernon to abuse Harry — just so that he could execute a Big Damn Heroes moment, save Harry from the abuse, and get a 100%-loyal soldier in the fight against evil. However, he is appalled to see how much Vernon went overboard. His callousness towards Harry is explained by the fact he knew about the Horcruxes and him being one from day one, believing that killing him was the only way and that growing attached to him was doomed to tragedy. While he is distrusted by and has a very rocky relationship with the protagonists in the first years, Dumbledore remains a an ally and eventually mends the bridges. He even grows very fond of Tom and ends up giving back the Elder Wand to Death in exchange for his life. Long story short, played straight at first, though somehow justified and slowly subverted.
YMMV / 3 Slytherin Marauders