''Ace of Spades'' by [=LeontinaStardust=] available on [[http://www.fanfiction.net/s/6764362/1/ FanFiction.net]] and [[http://archiveofourown.org/works/419325/chapters/698335 Archive of Our Own]] is a ''Franchise/{{Batman}}: Film/TheDarkKnight'' and ''Literature/HarryPotter'' [[IntercontinuityCrossover Crossover]] and SlashFic ([[YaoiGuys The Joker/Harry Potter]], [[YuriGenre Poison Ivy/Harley Quinn]]).

After saving the world Harry gets [[ShellShockedVeteran PTSD]] and [[PowerIncontinence loses control of his magic]], [[spoiler: [[AccidentalMurder accidentally killing Ginny Weasley.]]]] The Magical World, not wanting to get their hands dirty with charging their world's savior quietly strips Harry of his wand and has him secretly sent to a Muggle Asylum. Forsaken by the very people he saved Harry is shuffled between various mental institutions; none of which are prepared to help a wizard and [[GoAmongMadPeople Harry's condition worsens into full on psychosis.]] Harry ends up in Arkham where he makes the acquaintence of a [[PsychoPsychologist mad doctor with a burlap sack over his head that wants to use him in his experiments]], a police officer that is actually concerned about his well-being, and [[SelfDemonstrating/TheJoker a fascinating man with scars on his face]] who [[WoobieDestroyerOfWorlds also wants to see]] [[OmnicidalManiac the world burn...]]

([[IThoughtItMeant Has nothing to do with]] [[VideoGame/AceOfSpades the video game of the same name.]])

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!! ''Ace of Spades'' provides examples of:
* AccidentalMurder: [[spoiler: Harry killed Ginny.]]
* ActorAllusion: Harry asks [[Film/TheDarkKnightSaga Jim Gordon]] [[HaveWeMet if he is by any chance]] [[EpilepticTrees Sirius Black with amnesia.]]
* AffablyEvil: Harry and his new "friends."
* AllOfTheOtherReindeer: This is part of Acey's FreudianExcuse. Also Batman [[spoiler: when he pulls his ZeroApprovalGambit]]:
-->'''[[spoiler: Acey]]''': I told you... I told you you'd be hunted, despite all the good you've done. Gotham made you a villain without you doing anything wrong. I tried to warn you but you didn't listen.
* AllTherapistsAreMuggles: Harry couldn't tell his therapists about his problems even if he wanted to because they wouldn't believe him anyway.
* AttemptedRape: [[spoiler: Harry's cellmate. Harry kills him in self-defense. Later a man drugs his drink but Harry is saved by Batman (much to Harry's humiliation.) Averted with [[MaritalRapeLicense the Joker]]]]
* AxeCrazy: The Joker and Harry.
* [[spoiler: TheBadGuyWins]]
* BastardBoyfriend: The Joker to Harry.
* BecauseYouWereNiceToMe: This is part of the reason why Harry becomes [[TheFarmerAndTheViper obsessed with Jim Gordon.]]
* BedlamHouse: Arkham Asylum
* BeingTorturedMakesYouEvil
* [[BigBrotherMentor Big Sister Mentor]]: Harley Quinn to Harry.
* BrokenAce: Harry as [[MeaningfulName the Ace.]]
* TheChessmaster: The Joker, Harry is an aspiring one as well.
* TheCommissionerGordon
* CompositeCharacter: This Joker is a fusion of the Heath Ledger and Jack Nicholson versions.
* CorruptTheCutie: Harry.
* TheCorrupter: The Joker.
* CrazyJealousGuy: The Joker is jealous of the time Harry spends with Bruce Wayne and of the attention Harry gives to stalking Jim Gordon.
* CuteAndPsycho: Harry and Harley Quinn
* DarkAndTroubledPast: Harry.
* DarkFic
* DeathDealer: Harry as Ace.
* DiscardAndDraw: [[spoiler: Harry loses access to all his magic for a time but comes to be able to perform wandless magic summoning fire very well.]]
* DragonInChief: Harry Potter / the Ace of Spades is much more powerful than the Joker but the Joker makes it clear who's in charge.
* DrivenToMadness: Harry.
* DudeWheresMyReward: After saving their world, [[ObstructiveBureaucrat the magical world]] has Harry Potter committed.
* DysfunctionJunction: What do you expect with a villain family? UpToEleven when Acey adopts [[spoiler: James Gordon Jr. and Teddy Lupin]] into the family. Call child services!
* EtTuBrute: Harry feels very betrayed when Ron and Hermione testified against him.
* EvilAllAlong: [[spoiler: Harry and Jimmy (James Gordon Jr.) were working with the Joker all along.]]
* EvilIsOneBigHappyFamily: there are many cameos of other members of Batman’s RoguesGallery.
* EvilMakeover: Harry as the Ace of Spades.
* EvilMentor: The Joker.
* FallenHero: Harry.
* TheFamilyThatSlaysTogether: [[BadassFamily The Joker, Harry, Ivy, and Harley.]] [[DysfunctionJunction Joker is like the daddy, Ivy is like the mommy and Harry and Harley are like the bratty kids.]] "It's ''my'' turn to fire the bazooka!"
* TheFarmerAndTheViper: [[BecauseYouWereNiceToMe Because Jim Gordon was nice to Harry Potter]] Acey becomes obsessed with him. Later [[spoiler: Jim Gordon adopts Harry into his family. As a result his wife and daughter are killed and it's revealed that not only Harry but also Gordon's son Jimmy were working with the Joker all along.]]
* FanArt: [[http://windwarzch.deviantart.com/art/FanArt-Ace-of-Spades-216370731]] and [[http://manatilol.deviantart.com/art/ace-of-spade-fanart-1-263216752]]
* FiveBadBand:
** TheBigBad: The Joker
** TheDragon: Harry Potter, [[spoiler: Previously Scarecrow]]
** TheEvilGenius: Poison Ivy
** TheDarkChick: Harley Quinn and [[spoiler: Luna Lovegood]]
** TagalongKid: [[spoiler: Jimmy / James Gordon Jr. and Teddy Lupin]]
* FreudianExcuse: When Batman and Jim Gordon discover how badly the Ace was abused and neglected they come to believe that Harry is just a brainwashed tool for the Joker and that he isn't evil on his own. [[spoiler: [[TooDumbToLive Oops.]]]]
* FusionFic: The fic [[BroadStrokes loosely follows the plot]] of ''Film/TheDarkKnight'' and Harry seems to have taken the place of Two-Face in the narrative as the FallenHero that is corrupted by the Joker and has ties to Bruce Wayne and Jim Gordon.
* GenkiGirl: Harley Quinn.
* GoAmongMadPeople
* HeroAntagonist: Batman
* HypercompetentSidekick: Harry/the Ace to the Joker.
* IRejectYourReality: Harry has become delusional believing that Sirius must [[spoiler: still be alive and have somehow become Jim Gordon after falling through the veil.]]
* IWarnedYou: Acey to Batman when [[spoiler: Batman has to pull his ZeroApprovalGambit.]]
* KnifeNut: The Joker and Harry.
* KnightTemplar: The wizarding world and their attempt to "help" Harry.
* LivingWithTheVillain: [[OddFriendship Harry befriends Bruce Wayne]]; neither realize the other's true identity.
-->'''[[spoiler: Acey]]''': It's kind of funny though; friends in one identity, enemies in the other.
* MaddenIntoMisanthropy: Harry
* MamaBear: Poison Ivy is protective of Harley and Harry.
* ManipulativeBastard: The Joker towards Harry [[spoiler: It's pretty clear that [[TheManBehindTheMan he was behind the Scarecrow's torturing Harry.]]]] Also Harry plays Jim Gordon, [[spoiler: his son Jimmy ([[{{Foreshadowing}} a.k.a. James Gordon Jr.]])]], and Bruce Wayne like a piano.
* TheMentallyDisturbed: Harry and his new friends.
* MindRape: It's what Scarecrow does for a living.
* NeverMyFault: It's not Harry’s fault he [[spoiler: [[UnreliableNarrator accidentally(?)]] killed Ginny]] It's all ''THEIR'' fault.
* OddFriendship: Harry and Bruce.
* ParentalSubstitute: Poison Ivy reminds Harry of his mother and [[spoiler: [[TearJerker Jim Gordon reminds Harry of Sirius Black]] (a ParentalSubstitute of a ParentalSubstitute.)]]
* PatchworkFic: The fic is based loosely on the Nolan-verse but it also incorporates elements from the earlier Batman movies as well as the Batman comics and animated series.
* PlayingWithFire: [[spoiler: this is the kind of wandless magic Harry comes to specialize in.]]
* PowerIncontinence: Harry becomes so stressed he loses control of his magic.
* ProtagonistJourneyToVillain: Harry.
* PsychoExGirlfriend: Averted. Harley Quinn is psycho and the Joker's ex-girlfriend but she's moved on and bears no animosity towards the Joker or Harry.
* PsychoPsychologist: Dr. Crane/Scarecrow.
* PsychopathicManchild: Harry/Acey.
* PyroManiac: Acey.
* SanityHasAdvantages: Harry is '''''THIS''''' close to discovering that Bruce Wayne is Batman but instead he gets [[AttentionDeficitOohShiny distracted by some pretty rollerskates.]]
* ScarsAreForever: Of course Harry already has the one scar but the Joker gives him some more.
* SelfHarm: And Harry gives himself some more scars.
* ShellShockedVeteran: Harry.
* SlashFic: [[{{Seme}} Joker]] / [[{{Uke}} Harry]] and [[ButchLesbian Ivy]] / [[LipstickLesbian Harley]]
* SocialEngineering: Harry is a master at it.
* TheSociopath: The Joker, Insane!Harry, the Scarecrow, Harley, Ivy.
* StalkerWithoutACrush: Harry towards Jim Gordon after Harry [[spoiler: [[InsaneTrollLogic come to the logical conclusion]] [[WildMassGuessing that Jim Gordon is Sirius Black]] with [[EasyAmnesia amnesia.]]]]
* SuperpowerLottery: Even when depowered and suffering from PowerIncontinence Harry is still one of the most powerful characters in the setting he's in.
* ThatManIsDead: Harry Potter is dead. There is only Ace.
* ThenLetMeBeEvil: Harry
* TitleDrop: Harry's new villain name is Ace of Spades.
* TooFunnyToBeEvil
* {{Transplant}}: Harry Potter and [[spoiler: Luna Lovegood]] in the Film/TheDarkKnightSaga.
* TroubledButCute: Harry
* UnholyMatrimony: The Joker and Acey.
* UnreliableNarrator: Harry is nuts so his perceptions are a bit skewed.
* UnwittingPawn: Harry to whatever the Joker has "not" planned. Harry wants to burn the world down but it's also pretty clear he's being deceived...
* VillainProtagonist: Harry.
* VillainTeamUp
* WholesomeCrossdresser: After escaping Arkham Harry is eager to get out of the straight-jacket even if it means wearing Harley's clothes.
* WoobieDestroyerOfWorlds: Harry as Ace.
* YouHaveOutlivedYourUsefulness: [[spoiler: during the prison break the Joker encourages Harry [[TheDogBitesBack to kill the Scarecrow]] who was torturing him ([[TheManBehindTheMan in all likelihood on the Joker's orders]])]]
* YouWouldntBelieveMeIfIToldYou: If Harry told his doctors anything approaching the truth, they would only assume he was more delusional.
* YuriGenre: Harley and Ivy are the BetaCouple.