History Fanfic / HarryPotterAndThePrinceOfSlytherin

* TheHero: James Potter Jr. as the Boy-Who-Lived.

* HumiliationConga: In the space of forty-eight hours, James Potter [[spoiler: learns his closest friend (Peter) is a Death Eater who's been playing him for over a decade, is effectively blackmailed into emancipating Harry and paying him 11 million Galleons, learns that Harry (and Lily and Jim) are all descended from the notorious House Wilkes, endures Sirius punching him before swearing an Oath of Enmity against him, learns that Peter had also been *embezzling* from him which means that he *can't afford* to pay Harry the millions he'd just sworn a magical oath to pay, is forced to reveal his illegal animagus form in front of the Aurors under his command, and is fired from his position as Chief Auror.]] Later, the hits just keep coming, when he [[spoiler: is forced to lease Potter Manor and the Invisibility Cloak to Harry to avoid dying from his magical oath, has to move into *4 Privet Drive* with his family, and eventually humbly accepts a new Ministry job as Arthur Weasley's junior assistant.]] WordOfGod says this will mark the beginning of a [[RedemptionQuest redemption arc]] for James because "losing everything also means losing the burdens he shouldered as a result of having everything."

* AdaptationalHeroism: Snape suffers of this because the author dislikes how much of an unsympathetic {{Jerkass}} canon Snape is, whose only saving grace was being played by the extremely charismatic Creator/AlanRickman.
** Played with in regards to Tom Riddle. Unlike canon, he seems to have initially been a WellIntentionedExtremist who wanted to protect muggleborn by framing the purebloods through petrifying the muggleborns. His plan worked until Myrtle was accidentally killed and he reacted by using Occlumency to suppress all guilt, remorse or compassion, thus resulting in his StartOfDarkness. Things got worse once he split his soul...

* AdaptationalSexuality: [[spoiler:Viktor Krum]] was only ever portrayed as interested in women in canon, here he is quite happily (albeit secretly) dating Alex Nott.
* AdaptationalSpeciesChange: Well technically ethnicity change, still [[spoiler:Blaise Zabini]] was pureblood in the books but here he's a muggleborn who is HappilyAdopted by his pureblooded aunt.
** In canon Professor Flitwick is portrayed as being part-goblin. Here this is not the case as he is [[spoiler: a FULL goblin]]. No one realizes this due to the fact that [[spoiler:the goblin race as a whole disguise themselves as their more ugly forms when in public and Flitwick's appearance is their natural one]].

* AlcoholInducedIdiocy: James Potter sends a very ill advised howler to Harry on his first day of Hogwarts where he threatens to snap his wand if he steps out of line due to his partaking of this trope the night before when he learned that, after centuries of drastic measures to avoid it, a Potter had finally been sorted into Slytherin.

* AloofBigBrother: Harry is this to Jim for the most part, though at his nastiest he can be a BigBrotherBully.

** It is possible (though difficult) to learn parseltongue because it's an actual language, albeit an inherently magical one, and most parselmouths are not born with it. Salazar Slytherin used magic to make his parseltongue hereditary so its magical powers couldn't become a LostTechnology. [[spoiler:Ironically, Ron Weasley acquires it accidentally after his possession by Tom Riddle.]]

* BaitAndSwitch: In chapter 32, it seems that Snape has been entranced by Harry's green eyes but it was in fact Neville's because his father Frank once saved him from the Marauders.

** Draco tells his father of the advances made by muggles in the economy and suggest they have better ideas than wizards. Then Lucius draws his wand ... make some privacy charms, and answers why the wizard economy is different, proud of his son for the question.

* BeethovenWasAnAlienSpy: Shakespeare had a play called Love's Labours Won, a romantic comedy about star-crossed lovers attending Hogwarts together, which was erased from the memory of the Muggle world when the Statute of Secrecy was enacted.

** Greg Goyle towards his family's ward, Amy Wilkes, who is the daughter of a {{Sadist}}ic WickedToymaker.

* ButterflyOfDoom: Lily surviving Voldemort's attack on Godric's Hollow triggers this. Notably she retains her hostility toward Snape in spite of all the sacrifices he has made for her and that she's responsible for one of her children being horribly abused and neglected.

* TheJeeves: Blaise makes Dobby watch ''Series/JeevesAndWooster'' because all the abuse he faced with the Malfoys, particularly at Narcissa's hands, made him a nervous wreck. He adopts the mannerisms of this trope, including ServileSnarker, and starts wearing a black three-piece suit, although he's still [[DoesNotLikeShoes barefoot]].

** In Chapter 157, Lily talks about suing Rita Skitter for slander and Rita explains the difference between slander and libel like J. Jonah Jameson did in the first ''Film/SpiderMan'' movie.

** Just like in canon [[RedShirt Gibbon]] is the first Death Eater to die (albeit in highly different circumstances) and his death is not particularly dignified (In canon he fell victim to UnfriendlyFire, while here he [[spoiler:was [[OffWithHisHead decapitated]] by Lucius Malfoy's [[WhipItGood Fire Whip]]]] while menacing some of the younger characters). Just like in canon, we don't even learn his name until after his demise.

* OOCIsSeriousBusiness: Snape ''gives'' points to Gryffindor after Hermione shouts at Jim because he was acting like a {{jerkass}} in Potions class. Two years later, he gives Fred Weasley points in Potions Class after Fred (who had been a notorious slacker and goof-off) produces a perfectly executed potion. Snape briefly wonder if the whole world had gone mad.

* TroublingUnchildlikeBehavior: Harry and other Slytherins act ridiculously mature even though they are pre-pubescent kids. Of course the author admits he can't write 11-year-olds. It's a bit more troubling that Harry's intelligence allows him to "know" things that he can't remember learning, from advanced vocabulary words to random quotes from Oscar Wilde.

** To the Wiki/SCPFoundation in Chapter 101. The Department of Mysteries' Chime #43 is monitoring a curious location that strongly resembles [[http://www.scp-wiki.net/scp-354 SCP-354]]. (It is in Britain and not Canada, however.)

* CrusadingWidower: The Wagga Wagga werewolf pack discover to their cost exactly how dangerous examples of this trope can be when they brutally kill the wife and child of the Australian auror Lazarus White (who is, unbeknownst to them, actually [[spoiler: Regulus Black]] in disguise) only to have the grieving father unleash fiendfire on them and wipe them off the face of the Earth.

''Harry Potter and the Prince of Slytherin'' is a ''Literature/HarryPotter'' DeconstructionFic (with some elements of a DeconReconSwitch) exploring the common [[ThePoorlyChosenOne Wrong Boy-Who-Lived]] premise of many HP fanfictions. It spans multiple books and is being written by The Sinister Man.

* AdaptationalIntelligence: Marcus Flint is, while not a genius, still smart enough to be able to improve his [=OWLs=] grades through sheer will and effort, mostly because the author thought he had an AwesomeMcCoolName that was wasted in canon.

** The Sanctumen Ultimo works like the Oath of Enmity on a larger scale: a family member can be disowned for treason, and the rest of the family as well as all families with reciprocal oaths will magically hate that person. Unlike the Oath of Enmity, only a highly trained Occlumens can resist the Ultimate Sanction's compulsion. Poor [[spoiler:Theo No-Name]] discovers this first-hand. Then turned UpToEleven when a magically-compelled mob starts hunting for him to burn him alive.

** The Anathema Codex is full of these as it includes references to things such as [[{{TabletopGame/Exalted}} The Rune of Singular Hate]], [[{{Franchise/Hellraiser}} The Lament Configuration]], [[Franchise/MarvelUniverse The Six-Fingered Hand]], [[Series/DoctorWho The Nightmare Child]] and [[Franchise/CthulhuMythos The Hounds of Tindalos]] among others.

** A subtle shout-out to Film/ReturnOfTheJedi in Chapter 155. After learning of the existence of a Charm that can cause a wand to manifest a column of solid blue light capable of function as a dueling weapon, Blaise Zabini crashes into the Innovators Club and shouts "I DEMAND THAT YOU PEOPLE MAKE ME A LIGHTSABER!" Then, after a beat, he says more calmly "That is all" before slinking out, a reference to [[Characters/ReturnOfTheJedi Crix Madine's]] famous line.

* A subtle shout-out to Film/ReturnOfTheJedi in Chapter 155. After learning of the existence of a Charm that can cause a wand to manifest a column of solid blue light capable of function as a dueling weapon, Blaise Zabini crashes into the Innovators Club and shouts "I DEMAND THAT YOU PEOPLE MAKE ME A LIGHTSABER!" Then, after a beat, he says more calmly "That is all" before slinking out, a reference to [[Characters/ReturnOfTheJedi Crix Madine's]] famous line.