What is a list of all Pokémon that cannot be obtained in X and/or Y?

So Pokémon Bank is coming out very soon, and I thought I wasn’t the only one who would want to know which Pokémon to transfer to X and Y and which ones not to.If there are Pokémon from previous generations that are exclusive to X or Y please state that, as it is important.Warning:Don’t start answering unless you have a lot of free time, because I think the answer will take a while to write.

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The following Pokemon are completely unobtainable in XY without trading from ORAS or transferring from a different generation. Evolutionary lines are ordered by their first appearing member in National Pokedex order.

RattataMeowthKoffingPorygonMewChikoritaCyndaquilTotodileMisdreavusUnownStantlerRaikouEnteiSuicuneLugiaHo-ohCelebiTreeckoTorchicMudkipSlakothBaltoyFeebasRegirockRegiceRegisteelLatiasLatiosKyogreGroudonRayquazaJirachiDeoxysTurtwigChimcharPiplupKricketotCherubiBunearyGlameowFinneonUxieMespritAzelfDialgaPalkiaHeatranRegigigasGiratinaCresseliaPhioneManaphyDarkraiShayminArceusVictiniSnivyTepigOshawottCottoneeDarumakaYamaskFrillishTynamoElgyemBouffalantCobalionTerrakionVirizionTornadusThundurusReshiramZekromLandorusKyuremKeldeoMeloettaGenesect

The following families can be found through Friend Safari, but are listed here because encountering them is an inconsistent endeavour.

ClefairyVulpixParasVenonatMankeyGrowlithePonytaSeelGrimerDrowzeeKrabbyHitmonleeChanseyTangelaElectabuzzMagmarTogepiNatuAipomSunkernGirafarigPinecoPhanpyWurmpleSeedotShroomishNumelCacneaDuskullTropiusSnoruntSphealBeldumShinxShellosBronzorSpiritombLillipupMunnaPidoveBlitzleDrilburTympoleSewaddlePetililMaractusMinccinoDeerlingJoltikKlinkRuffletVullabyLarvesta

List of Pokemon by availability (Bulbapedia)

http://serebii.net/xy/unobtainable.shtmlAll Unobtainable PokettoMonsutaaaaaaaa… HEEHEE :D

Hope I helped. x)