First of all, let me just point out that this is NOT my personal wish list. I estimate that 75% of you will skip this paragraph and immediately read my list and reply, "RAAAARGGH! *rage face* ASHDJJAHASKAHAJ YOUR WISHLIST IS STUPID, RAAAAAARGH ASDJLKAJLDKSLAL!!one 1" *more rage face*
These are all explained via an assumption of GameFreak logic, NOT. I repeat, NOT my list of what I want.
Okay, first, they are grouped by what I assume are their probabilities of happening.
Probably
Cleffa, Clefairy, Clefable - Fairy
• Very obvious reasoning. The whole line screams moon/fairy/magic/unknown powers that are radically different from Normal types (rodents, deer, sloths, a random Kecleon) and other non-mysterious power-affiliated creatures. I forgot Dunsparce. But so did you.
Happiny, Chansey, Blissey - Fairy
• Like. Come on. Another blatantly obvious creature that demonstrates abilities different from Normal types. Blissey's got wings on its back. So there's that.
Togepi, Togetic, Togekiss - Fairy, Fairy/Flying
• Not that the TV series is 100% canon, but they can float around in a mysterious Mirage Kingdom and are the iconic little, "what the heck are you?" magical creature that isn't your everyday mammalian thingy. Like. Come on.
Misdreavus, Mismagius - Ghost/Fairy
• It's been mentioned many times that these ghosts have magic spells and a have a witch hat design. Not that I have anything against pure Ghosts, it just feels like this line is a high candidate for Fairy typing.
Swablu, Altaria - Fairy/Flying
• I really, really feel like GameFreak had Fairy type in mind when designing these guys. Not that they couldn't be Dragon type, but I always felt like Altaria would be the wallflower at the Dragon prom. No, Dragon types don't all have to be scaly, but I felt like they were trying to evoke magical abilities back in the day, but didn't know how to type it, so just said, "...well...we'll make it a Dragon type later, but for now, just keep it at Normal, I guess..."
Milotic - Water/Fairy
• For taking forever just to find (if it's not a nature that favors Beauty crap, i just throw it back) and then making me have to force feed it PokéBlock until it evolves, it better be kick*ss. Nope. Just pure Water. ASDFJKJSJDJAK. It's serene appearance and aura should now say, "I'm immune to Dragons as your reward!"
Zoroark - Dark/Fairy
• Don't get me wrong. This is my favorite Pokémon. And I'd much rather like it to stay pure Dark, but it really does fit the definition of a dark fairy creature. Creating illusions of itself is definitely something of magical proportions. Plus, it's hard to get (I didn't play Black/White 2) and was practically the mascot for the 5th generation. It just makes more sense, now. And in the movies, it spoke with telepathy. Which is psychic in nature, but I could get over the cognitive dissonance by giving it Fairy typing.
Celebi - Fairy/Grass
• The iconic forest fairy. I don't have to explain this. Not one psychic power demonstrated. Unless time travel is now achieved through thinking really hard.
Jirachi - Steel/Fairy
• Comets. And more space magic than Mass Effect 3's original ending. Granting wishes seems more magical than psychic. Wakes every few hundred years. That's got to be the strangest life.
Uxie/Mesprit/Azelf - Psychic/Fairy
• These three seem to blur the line between Psychic and Fairy. It would make sense as to how they could control the legendary dragons that helped make the universe possible by being immune to them.
Cresselia - Psychic/Fairy
• Again, with the obvious moon theme.
Phione/Manaphy - Water/Fairy
• I really don't think this thing ever showed off any real powers. No levitating or psychic crap. Just mostly a lot of swimming and May running after it. But, it's the prince of the sea or whatever. And it can breed a deformed army of itself. So that can be fun or whatever.
Shaymin (Land Forme) - Grass/Fairy
• Makes a lot of sense for it to have magic abilities that can make flowers bloom. And fits the painful, "cutesy thing," stereotype. But, I like it.
Victini - Fairy/Fire
• I'm a bit torn. I keep seeing Fennekin/Braixen and thinking, "whoa, cool! A Fire/Psychic type! We've never had that befo- oh. Victini." Again. Demonstration of floaty powers, but no obvious source. The energy that it had inside itself seemed more akin to actual magic, so Fairy typing would make more sense.
Meloetta - Fairy/Psychic and Fairy/Fighting
• Another obvious magic creature that just seems like they had no idea what to give it other than Normal type. In the anime, it turns invisible and floats. If that's not magic, I give up on Pokémon physics. I'll join Glalie and just give up on gravity.
Maybe
Ninetales - Fire/Fairy
• According to legends, it lives for a thousand years. Not that I would bank on legends, but something about it just seems like it could use the magic definitiveness. Many times we see it, they always throw the, "don't know what's happening, here," gimmick at us. Personally, I'd rather it just get a Fire/Ghost evolution and make my life complete.
Arcanine - Fire/Fairy
• It is called the Legendary Pokémon for some reason. I think it makes sense for it to get some unique typing to account for it. I mean...it was featured on the stone tablet, along with the Bird Trio. In my own opinion, it's already drooled over enough, but it would just make it a reasonable explanation of the big deal behind it.
Dunsparce - Fairy or Normal/Fairy
• Like. I don't even know what to do with this thing. I actually like the design, but I'd rather blow my time on painkillers than catch one of these things. It has the fairy wings. Not that it means anything, but it would give this bad boy a reason for me to willingly go into Zubat h*ll and beg for a swarm or bank on my good luck to find it.
Bellossom - Grass/Fairy
• It always just seemed weird that Gloom lost a typing when it evolved. No real magical elements demonstrated, but then again, when was the last time your Lv. 10 Marill took a Garchomp Dragon Tail to the face and brushed it off?
Skitty, Delcatty - Normal/Fairy
• I don't really even think they deserve a Fairy typing. I like them, but I just think no. But it wouldn't be completely crazy.
Audino - Fairy
• Like the dioecious (and therefore not as gender-questionable) divergent evolution cousin of the Chansey family. Just with bigger ears where the "fullness" would be. Healing theme somehow says, "magical!" I suppose.
Whimsicott - Grass/Fairy
• This one is based off of its descriptions, flavor texts, and inspiration but it comes from the fairy sheep thing that floats around and pranks people.
Gothita, Gothorita, Gothitelle - Psychic/Fairy
• I'm posing this one because of the whole space theme. They stare into space and otherwise look vegetative most of the time, which is somehow connected to them receiving signals from the mothership or something like that. I could see it going the way of Gardevoir.
Mew - Psychic/Fairy
• Meh. I really don't see this happening, but it could. No real comments. Just the original cutesy sprite/fairy/floaty tiny legendary mammalian thing. Represent.
Unlikely
Mime Jr./Mr. Mime - Psychic/Fairy
• Not incredibly farfetched (Gen 1 reference joke...both are trade-only...never mind...) to believe tha it could end up this way. Never really showed many psychic abilities, mostly just did weird stuff on the anime. It's famous for creating invisible barriers and guarding against all sorts of stuff. Wouldn't be too weird to imagine it protecting itself against Dragon powers.
Unown - Fairy or Psychic/Fairy
• Again, this little guy. Guys. Alphabet Soup...never really showed any psychic abilities off. Just has the randomly assigned Hidden Power (which I assume will now have to accommodate Fairy type) which kind of screams magic more than psychic, but whatever. These things are weird.
Snubbull/Granbull - Normal/Fairy
• I mean, if Jigglypuff gets to be magical, then the "Fairy Pokémon," better get the type, right?
Lunatone & Solrock - Rock/Fairy
• I'd hate to burst the bubble of Liza and Tate, but with Moonblast and space fairies, it's hard to say that these floating rocks are more psionic than they could be space magic...rocks...
Volbeat & Illumise - Bug/Fairy
• It always bugged me (Yes. Bad puns.) that these two never really did anything other than be useless. They have separate genders. Big deal. I just think that they might be weak, but giving them Fairy typing would make them slightly more appealing. Even though hitting them with my shoulder heating pads would cause them to faint. Maybe someone would find them more interesting. (Hoenn reboot, anyone?)
Chingling/Chimecho - Fairy or Psychic/Fairy
• I'm actually sort of surprised that no one thought of these little guys would be good candidates. Again, they're more Psychic types that demonstrated very little psychic abilities. But it's probably because they're one of the many forgettable creatures that could use a boost.
Snorunt/Glalie - Ice/Fairy
• Doesn't it bother anyone else that the levitating ice and rock ball is just floating around? Like. I know it's Pokémon physics, but really. This is absurd. A secondary Fairy typing would make it a large target for a Bullet Punch to the face, but it would just make a little more sense than, "yeah, that little snow sprite just decided that gravity was sooo last century."
Luvdisc - Water/Fairy
• I'm not a fan of giving it a Fairy type, but there seems to be a theme of giving forgettable creatures a boost (in my interpretation of GF logic.) I could see it happening. Still really wouldn't care, either way.
Cherrim - Grass/Fairy
• This thing is like a weird little gimmicky weather form creature that is somewhat cute. Kind of fits the body type for one grouping of Fairy type prerequisites, I suppose. Largely unmemorable. Would likely be the cute thing you keep in your car when it's sunny out and would pet once in a while, but you'd quickly lose interest and it'd die of starvation in your backseat.
Cryogonal - Ice/Fairy
• Honestly, I don't even want this thing to get a second typing, but it could see it. It just seems like it would explain the giant floating snowflake that apparently is highly carnivorous within its territory. But maybe that's just my, "why are you floating?" bias speaking.
Darkrai - Dark/Fairy
• I really don't know if simply being a Dark type means it can become my personal nightmare fuel. It just seems like some sort of magical abilities are at play. Plus, it's a nice duo combination with Cresselia.
Now, here they are, grouped by, "theme." I also threw the confirmed Fairy types in there for reference.
Emotion/Healing/Calming
• Happiny/Chansey/Blissey
• Togepi/Togetic/Togekiss
• Swablu/Altaria
• Milotic
• Luvdisc
• Audino
General Magic/Illusion
• Ninetales
• Togepi/Togetic/Togekiss
• Misdreavus/Mismagius
• Celebi
• Shaymin
• Zoroark
• Victini
• Meloetta
• Spritzee (plague doctor)
Sterotype Threats
• Mew
• Celebi
• Jirachi
• Uxie/Mesprit/Azelf
• Phione/Manaphy
• Shaymin
• Victini
• Flabébé
Moon/Space Magic
• Cleffa/Clefairy/Clefable
• Lunatone & Solrock
• Jirachi
• Cresselia
• Darkrai
• Gothita/Gothorita/Gothitelle
Legend/Magical Inspiration
• Ninetales (kyūbi; insert Naruto reference!)
• Arcanine (shīsā or koma inu or haetae)
• Dunsparce (tsuchinoko)
• Unown
• Gardevoir (medieval maiden)
• Mawile (futakuchi onna)
• Chingling/Chimecho (suzu)
• Snorunt (zashiki warashi)
• Whimsicott
• Spritzee (plague doctor)
• Xerneas (Cyrenian hind?)
Floaty Things/Cutesy Creatures/I'm Too Lazy to Categorize
• Igglybuff/Jigglypuff/Wigglytuff
• Mime Jr./Mr. Mime
• Unown
• Bellossom
• Snubbull/Granbull
• Skitty/Delcatty
• Volbeat & Illumise
• Chingling/Chimecho
• Glalie
• Cherrim
• Cryogonal
• Sylveon
• Swirlix
• Dedenne