These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Magmar and especially Magby's Japanese names: Boober and Booby, respectively! Of course, it was MEANT to reference birds like the Blue-Footed Booby, but... well...
And Magmortar is Booburn. Ouch.
The fur in between Reshiram's legs is rather...suspicious and quite an unfortunate design choice.
Not just Reshiram. Quite a few Pokémon have a tuft of fur between their legs, like Blaziken and Beartic.
White Kyurem gets a few of Reshiram's characteristics... but not that suspicious placing of fur.
The move Harden could make a few people with dirty minds giggle
Buizel's chest. Not to mention what the Internet has done with Cloyster.
Adaptation Displacement: Variation and played straight. Pokémon Special is far more well-known than any other Pokémon manga, even in its native country (where most manga stay), to the point where many consider it to be the official Pokémon manga. Thanks to the late 1990s Pokémon craze, the anime (specifically the first season) is more well known than the games even to this day, despite the games being one of Nintendo and Game Freak's biggest franchises and the second biggest gaming franchise ever, and despite the anime having become less popular than the games.note Specifically, the current fandom for the games is bigger than for the anime, but the games haven't even come close to the anime's popularity at its peak. As a result, most mainstream parodies tend to revolve around the anime rather than the games, though there areexceptions.
You're wandering down a road miles away from home, your Pokémon are weak, possibly paralyzed or poisoned, several are knocked out, you're out of healing items and are desperately looking for a Pokémon center to heal your Pokémon but don't know your way around the area. As you struggle onward another trainer spots you and immediately challenges you to a battle, giving you no chance to back down and having no regard for the safety and well-being of your 'Mons.
But then, the reverse. You see a trainer looking down the road and talk to them to challenge them to a battle. They only have one or two Pokémon five levels lower than yours, and depending on their dialogue said Pokémon may be freshly caught, or the trainer is on a losing streak, or is just out for a stroll. They may also be a young child or an old man or lady. You proceed to crush their Pokémon, take their money as spoils of victory, and leave them alone in the middle of nowhere while you continue on to find another trainer to do the same to. Your main goal in doing this is to obtain the Gym Badges and become Pokémon Champion, something which in-universe, especially in Black and White, is seen by the in-game characters as the hollow, pointless goal of pursuing power and fame just for the sake of being powerful and famous. Congratulations, you're a Sociopathic HeroVillain Protagonist!
Consider the real world equivalent of Pokemon battles, where human trainers force animals to fight for them? Bear-baiting, Cock-fighting and Dog-fighting! Yeah, it's suddenly become a lot harder to root for our heroes...
The alternate to this comes when material for the series tries to characterize the Pokémon themselves beyond doing whatever their trainer tells them to, by saying all the fighting is just as much a game for them as it is for anyone playing the games. This is essentially a world which humanity shares with nearly seven hundred different species of super-powered Blood Knights.
The series has different Pokémon names for the Japanese, Englishnote with the English names used everywhere outside of Japan, France, Germany, Korea and China, French, German, Chinese and Korean versions, with all characters and locations having different names in each translation as well. Generally, these localizations are well-liked by each of their target audiences. However, French-speaking Quebecers, who generally grew up with the English games and a Quebec French dub of the anime that used the English names, are prone to have somewhat negative opinions of the French games and TCG (which are imported from France, and use their localizations). Similarly, Latin Americans play the English games, and are critical of Spanish character and location names (used in Spain), with some Latin American users on Pokéteca (the Spanish Bulbapedia) causing an uproar over the use of said Spanish names on the wiki rather than the English ones.
Badass Decay: Persian was a threat in the early years of the franchise, but, after Slash failed to land critical hits 100% of the time, its overall mediocre stats showed.
Alakazam (and the Psychic-type in general) has become progressively less threatening with each generation. However, the Fifth Generation has given some of them, including Alakazam, a boost with the Magic Guard and Magic Bounce abilities.
Charizard too, though at least it got a bit better this generation with Solar Power. Emphasis on the "bit". Not as prevalent as the above though, considering that it has never been OU.
Tauros was considered the undisputed king of the Generation 1 metagame due to its great attack, speed, and type-boosted Body Slam and Hyper Beam. However, Power Creep and the change in metagame has left Tauros in the dust these days.
Dragonite is one of the most popular Pokémon ever (by way of being a Badass Adorabledragon and Lance's signature Pokémon), scoring high in popularity pollsnote taking overall results into account, it more or less comes second behind Charizard and maybe a few others. However, it has also drawn ire for being a randomly cuddly and orange dragon that evolves from a slender, elegant blue serpent, for standing out from other pseudo-legendaries (which generally follow a theme of "ferocious, Badass, predatory fantastic creatures"), and for its oddlyBarney-like appearance.
Pignite and Emboar, for being the third Fire/Fighting starter evolutions in a row.
Oshawott's design was highly polarizing when it was first revealed, but its evolution, Dewott, showed the emergence of samurai-like qualities and was rather widely well-received. Then their final stage, Samurott, was revealed, whose unexpected incorporation of sea lion qualities into its shogun motif promptly re-broke the base; being an apparent quadruped undermined many fans' expectations of a shell-sword wielding samurai. As it turns out, the shell armor on either its forelegs do contain swords which Samurott uses in combat, somehow still without being bipedal - artwork portrays it as using a sword in one limb while standing on the other three.
Zoroark was deliberately designed to be an Ensemble Dark Horse by copying many of Lucario's traits, which works for some and not for others.
As a powerful version mascot legendary, Reshiram is quite popular, but some find its design to be rather silly.
To a slightly greater extent, Dialga and Palkia. Although all box legendaries are popular overall, the creation duo seems to have fewer devoted fans because they just plain look weird compared to the others.
The Gen 4 evolutions of older generation Pokemon. Either they're hideous design departures from their pre-evolutions (not helped by many being evolutions of first generation mons) or creative evolutions of otherwise forgettable mons. The former opinion was widely held when they were first revealed, but over time, the evolutions grew on many fans.
Even Series Mascot Pikachu is not immune. Outside of its intended demographic of young children, it has a huge number of fans who love the thing to death, but also has a legion of haters who criticize its overexposure and saccharine cuteness. An IGN Pokémon popularity poll placed Pikachu in a surprising 48th place out of all creatures in the series (to be fair, IGN's demographic consists mostly of young adult male gamers).
It has gotten worse since the introduction of Generation V, with Pikachu getting more screen time and media exposure than any other Mon when it's not even catch-able in the main games of the generation. Mitigated somewhat after the release of Black 2 and White 2, where other old Pokémon were brought into the spotlight too, and it even looks like fellow unobtainable Gen I classic Charizard will get the Wolverine Publicity treatment.
Conkeldurr. While it's an extremely powerful and useful Pokémon (even competitively), it's generally viewed as (and possibly designed to be) extremely ugly.
Its pre-evolution, Gurdurr may even be more widely hated, because it's just as hideous, if not more, than Conkeldurr, and it's a common annoyance in caves when you're looking for a rare Pokemon or have run out of repels.
It's difficult (if not impossible) to flee from wild Pokémon with high Speed stats without a special item or ability.
During the first generation, trapping moves like Wrap prevented the opponent from taking any action, meaning a fast Pokémon could inflict it regularly with the opponent unable to take any action whatsoever. The same applies to Pokémon who could inflict Sleep.
"Selfdestruct" and "Explosion" actually inflict twice their stated attack power in damage (prior to Generation V), making them very likely to KO the opponent. There goes your chance for catching it, and all the experience you would have otherwise earned. Are you in an area populated by wild Voltorb or Geodudes? Hope you brought plenty of Revives!
The Rock-type move "Rollout" hits 3-5 turns in a row and doubles in power every time it hits (85% of the time). Rock is one of the best offensive types, inflicting an additional double damage against the (very common) Flying and Bug types, and resisted only by the (less common) Ground, Fighting, and Steel types.
Watchog. The entire genus is a walking middle finger to Nuzlockers.
Charizard is one of the most recognized and popular Pokémon in the Western world, having nabbed 1st place in the IGN popularity poll mentioned above (indicating that it could be the most popular Pokémon among the older male fandom). He is also very popular in Japan, with new merchandise including collectible and action figures and a special edition Nintendo 3DS LL with his likeness (although only for sale at Pokemon Center stores) available. Also, on March 2013, said stores will release Charizard-themed accessories including: iPhone cases, pencil cases, coloring pencils, ties (yes, business ties), tiepins, and cufflinks. It is currently the only Generation I starter... nah, the first Generation I Pokemon, period, to receive such a treatment.
Mewtwo is also extremely popular, especially among said older male demographic. Being the original ultimate Pokémon definitely helps.
In the first Gen, there were only two useful Bug-types: Ninja raptor mantis Scyther and Pinsir, the former becoming a pretty big darkhorse. Scyther eventually got an evolution, Scizor, which is Awesome Yet Practical and built on Scyther's already-huge popularity.
A LOT of fans wish Joltik was the most well-known Electric-type.
Quite a few Pokemon fans are very fond of Deerling for changing colors, being cute, being a deer, being a grass type, holding its own in battle, and for having an awesome evolution.
And Braviary is A TRUE AMERICAN EAGLE.
Snivy and his evolutionary family. Also known as "Smugleaf".
Zekrom, ever since Black and White were released statesidenote i.e. this seems to be more of a case of Germans Love David Hasselhoff, although Game Freak has been trying to push Zekrom's popularity in Japan too. Similar to Lugia, White has been reported to sell more copies than Black in North America (and some other places), most likely due to the second cover-art mascot being one of the most Badass Pokémon ever according to many fans.
Genesect, prehistoric insect-turned-cyborg weapon of mass destruction.
And, based on the trailer for the next movie, a Transformer too. This only served to increase its popularity.
Scrafty is also a very well-liked Pokémon from Generation 5. It looks cool, has an interesting theme, and is uniquely useful in competitive play; it and Scraggy (its previous form) are the only dark/fighting types, which means they're the only fighting type Pokémon immune to psychic attacks, and they get STAB on two very useful types. Scrafty's possible abilities are also very good. Moxie increases its attack every time it defeats an enemy, making it a good sweeper. Shed Skin has a chance of removing a status effect, so it's great for a defensive set.
The official Nintendo 2011 Black and White tournament gave out a fairly decent Scrafty as a nod to its popularity as a team fighter.
It likely helps that Scrafty is really useful in-game as well, with its typing rendering it good against three of the Elite 4.
Magnemite, thanks to a game mechanic introduced in Pokémon Black 2 and White 2. note An area in the game lets you set up shops where you get services not offered elsewhere, like leveling up your Pokemon, buying berries, or buying common items cheap in bulk to sell at higher prices in other stores. If you trade Pokemon with other people, NPC's modeled on these trainers will arrive at the area and interacting with them will either let you set up the shops you want or "level up" the already existing shops, thus expanding their services. Cue Magnemite: being one of the earliest Pokemon available in the game, if you catch one and go to the Global Trading Station at any Pokemon Center, you can trade Magnemites of any kind with trainers from all around the world. This way, you can get more NPC's to level up your stores and use their services much sooner than you would otherwise.
At first, Probopass looks silly. However, this is because it's a restored Moai head, complete with dorky red hat and bulging eyes. As for the mustache? It's a magnetic Pokémon, and it's attracted iron filings.
Linoone, the evolution of the raccoon Zigzagoon; remember that Japan has a tendency to mix raccoons, badgers, and raccoon-dogs up a bit.
Meditite/Medicham: Their attack is doubled because they hit physically and mentally at the same time.
The point is raised frequently why the main villains are only ever armed with Pokemon, as opposed to, say, guns. Consider that, in a world where deadly beasts have been domesticated for millennia, firearms may never have actually been developed.
Lt. Surge heavily implies that he killed people with his Electric-type Pokemon in (Fire)Red/Blue(Leaf Green) Versions.
Doubles as Getting Crap Past the Radar: The female grunt uniforms for most of the main Team Badguys are skimpy as Pokemon gets. The leaders of these teams are healthy older gentlemen who are just a little nutty. The exception? Galactic Leader Cyrus, the emotionless shell of a man, who dresses both his ladies and gentlemen in full uniform, complete with long sleeves and high collars, and heavy-looking leggings for the girls.
With the exception of Jupiter, but admins seem to get to choose their own uniform.
Considering that Cyrus isn't actually emotionless and is just incredibly repressed, the grunt uniforms can be seen as more of a kink than anything else. Although they're still Fridge Brilliance considering that they look like something out of a 1980s music video, and if you go off the release dates of the games, Cyrus would have been born in either 1979 or 1981.
If you think about it, the little dresses the female Galactic Grunts wear are actually quite short and tight- if it wasn't for those leggings they would show quite a bit of skin.
Evice and Greevil are both old men who likely have ground their sex drives into dust (Greevil, having two sons, can actually claim this as an excuse). Cipher Peons are dressed head to toe in Stormtrooper armor, even their faces.
The Pokédex seems incredibly inaccurate and generally over-the-top to the point of unrealism. Which would make sense, considering that Professor Oak got a bunch of 11-year-olds to fill the Pokédex for him!
Psychic is the power of the mind - yet it's weak to Ghost, Bug, and Dark. That's a rather odd set of weaknesses, right? Probably gameplay... but wait a second. Bugs, Ghosts, and Darkness/Evil are actually common phobias!
The moves Focus Blast and Focus Punch, known respectively in Japan as Kiaidama ("Fighting Spirit Bullet") and Kiai Panchi ("Fighting Spirit Punch"), seem especially representative of this, with the latter move having the highest base power of all existing Fighting-type moves (150 Power).
It's suggested that you check which Pokémon (usually legendaries) are not allowed in competitive battling circles before entering a battle.
Of the Psychic-types that dominated Generation 1, Alakazam was the head (excluding Mewtwo).
Long before Garchomp centralized generation 4's metagame, Curselax broke generation 2 in half the same way. Snorlax is still pretty powerful, and is one of 4 Pokémon to have always been considered OU (Along with Gengar, Starmie, and Zapdos, although in the latest Gen it and Zapdos are beginning to get Overshadowed by Awesome).
Mewtwo. Chansey or another Mewtwo. Those are the only two first generation Pokémon that had any chance against the most used moveset in the first gen. Even after the nerf, it is still one of three Pokémon that do not have any surefire counter.
Mewtwo now learns Psystrike, a special move that does physical damage. Chansey is no longer effective at walling him.
Latias was allowed in the standard metagame for some time, and was incredibly durable and damaging thanks to Calm Mind. When it eventually got banned, the resulting power vacuum let Salamence become so dominating that it ended up banned, too.
Groudon, Kyogre, and Rayquaza. All three of them, and to an unquestionable degree to boot - even at level 1, the former two's ability to automatically induce an endless weather condition alone was enough to make teams built around sun or rain insurmountable to teams that weren't.
Deoxys. It was thought that the Speed Forme wouldn't be broken. Its unbanning was what taught people how to use it, and now it is the most used of the four. The other three forms weren't even questioned.
Garchomp. One of the very few non-legendary Pokémon to be considered Uber.
Dialga, Palkia, and Giratina, full stop. For extra fun, combine Palkia with Kyogre and proceed to wash crap away!!!
Darkrai. Fast, strong, and can incapacitate with ease things that can take it out fast.
In-game, Darumaka is a top tier mon. It learns Belly Drum and Flare Blitz by level-up, shortly before evolving into a 140-Attack behemoth with Sheer Force making its Fire Punch (also learned by Darumaka by level-up) even stronger. In competitive battle, it's not this, but it's still pretty darn good.
Reshiram and Zekrom are rapidly shaping up to be this in their own right (Kyurem, however, seems to be held back by its typing.) Reshiram in particular teams up with Groudon in much the same way that Palkia teams up with Kyogre (read: the opposing team gets nuked to oblivion.) Meanwhile, Zekrom takes advantage of its physically-biased stats (and Electric-type STAB) to rip the specially-oriented Ubers metagame a new asshole.
In the trading card game, Mewtwo-EX has very quickly become this as of 2012 season. With the right set-up, X-Ball (its first and, bizarrely, most useful attack) is more than capable of churning out upwards of 100 damage every turn, all for a minimum of just 2 of any Energy. For the record, Mewtwo-EX is one of the fastest-to-play Pokemon in the game due to being Basic rather than Evolved, can be ready for battle in a single turn thanks to the same expansion's Double Colourless Energy ... Mewtwo-EX is such a broken card that, for the most part, a deck could be determined as competitive by the question 'It's good, but does it have Mewtwo-EX?' All EX cards have the 2 Prize Card drawback, but with Eviolite being so popular (-20 damage taken from each attack when attached to a Basic Pokemon), and more health than just about anything except other E Xs and Wailord, good luck taking one down before it tears a gaping hole in your team. Did we forget to mention that it can be obtained very easily and cheaply thanks to promo tins?
Weedle can be a much bigger nuisance than Caterpie due to its ability to inflict poison.
Tentacool are in every body of water you can surf into, quite fast, and not easy to kill thanks to their typing - when they aren't at levels so disproportionately low, you'll consider whether it's even worth the time and PP to beat them.
Then there's their Gen V expy, Frillish. Same problem, every body of water you can surf into, not easy to kill.
Geodude and Graveler share a habitat with Zubat. And their tendency to explode in your face is not welcome.
And though Geodude/Graveler aren't present in Gen V,Boldore is. And both it and its pre-evolution Roggenrolla have both Sturdy, meaning you cannot kill it in one hit. They only learn exploding moves at higher levels, though.
Hoothoot are everywhere at night; there are even places where they are the only things present.
Wingull are as widespread and are as annoying as real seagulls. Then there's their evolution, Pellipper, which is possibly more annoying because it's not easy to kill if it's near your level. "Pelliper used ROOST! Pelipper used ROOST!"
Zigzagoon, the Hoenn Rattata.
Bibarel. "Bibarel used Super Fang! Bibarel used Superpower!"
And now Watchog has somehow managed to top even that. With moves like Super Fang, Crunch, Confuse Ray, and Hypnosis learned very early on, some fans have suspected that they were created with the intent of pissing off Nuzlocke runners(and everyone else).
Magnemite and Magneton were this in the first generation, before they became easily-defeated dual-types. Fortunately, unlike their common representation in the card game, they've never been able to learn Selfdestruct/Explosion from leveling up.
For those who train their Pokemon by battling Audinos, Emolga can certainly be this. Not nearly as much Exp to be gained from beating it, and it's high speed can make it a pain to run away from if you don't feel like dealing with it. If you do decided to try and fight it, its Static ability will constantly be afflicting your physical attackers with paralysis, regardless of their typing.
Basculin in every Gen V river or pond. Especially when you see rippling water and fish for something rare and it's nothing but the opposite form of whatever Basculin is normally in your game.
In the earlier gens, it's usually Goldeen/Seaking popping up in all the non-ocean water.
Fearow in the postgame of D/P/PT... if you're in a hurry and not wanting a fight, anyway. The "RUN" button does no good half the time.
Koffing/Weezing. It also has the tendency to explode in your face.
Whismur. It's all over in Gen III and always uses Uproar. (Chatot has this move in Gen IV, but it isn't nearly as common as Whismur in III and it's really only useful for filling your dex or RNG breeding, so you're less pressured to catch one.)
Growing the Beard: Each generation brought in numerous improvements to the game, either competitively or in-game speaking since Generation I.
Generation II pretty much is where the games hit their stride, with the introduction of genders, held items, and breeding, certain trainer rematches, and the first implementation of the series' wide battle tower in Crystal. Also, though elementary, it introduced the series' first move tutor who would teach a Pokemon of your choice a powerful move. Generation II also split the special stat into special attack and special defense stats to make it easier to determine which mons were going to dish out/take special attacks better or worse. It also introduced swarming, letting you catch certain monsters at certain times.
Generation III saw a noticeable improvement in art and sound over the previous two generations. It also introduced natures, innate abilities (like Mudkip's Torrent, for example), farming for berries, and a slew of more competitive-worthy items and monsters. Gen III also refined the ability to rematch against certain trainers (with gym leaders added to the list for Emerald) just by expanding the lists. It expended the move tutors abilities to teach your Pokemon far more moves as well, if you had the BP for it.
Generation IV saw a massive overhaul of the standard battling system just by splitting up physical and special attacks by the individual move, as compared to what the type of the move was. Also, it introduced tons of moves that enabled broader strategies. Gen IV also introduced even better abilities to take mons From Nobody to Nightmare (Scizor, much?). Finally, it introduced the Poketch, which was like the Pokegear with more functions such as EV counting, happiness checking, etc. It also introduced transferring across generations and wireless communications, all of which improved the number of Pokemon one could catch in one version before referring to a friend/GTS/themselves with another cartridge.
Gen V incorporated much stronger story-telling elements (though whether or not it succeeds is up to the viewer). Black and White also redesigned a lot of interfaces to speed up action (weather listed on sidebars, Repels being used by the menu asking you rather than manually using one through the menu). Finally, it also introduced a long awaited sigh of relief: Reusable TMs.
Black and White 2 also refined the mechanics of breeding and such to make it even easier to perform without sinking in a lot of time. The tutors (a returning feature from Generations 3&4) also encouraged a lot of innovative move-sets. It also shortened the pokemon tournaments in postgame (the PWT) in a way that it's no longer tedious (though still time-consuming admittedly) to earn BP in order to get the items one needs compared to Generations III and IV.
Hell Is That Noise: The Viridian Forest, Mt. Moon, Lavender Town, and Pokémon Tower themes were potent examples of Nightmare Fuel back in the day. To the relief of many who wanted to enjoy the nostalgia of the positive parts of their childhoods, the former three got prettied- and cutesied-up in Gold/Silver, and the latter didn't show up at all. And outside of those, the series is rife with examples—for example, everyone has some Pokémon cry that would grind on him or her, be it because it belongs to Goddamned Bats, Demonic Spiders, or otherwise.
Mis-blamed: Despite that a company called Game Freak has had their logo plastered over most (if not all) games with the Pokémon title on it, nobody seems to realize that they are the company that actually develops the games in the first place, especially the "mainstream" ones that sell the best. Any criticisms with the games get attributed to the publisher, Nintendo. Game Freak seems to have gone over a decade without much credit or blame for the series.
One Pokédex entry estates that Drifloon tries to kidnap children, but that Drifloon are much too light and weak to actually carry the children away.
Giratina's cry, as well as the fact that it seems to be based on the antithesis of Arceus.
Periphery Demographic: Outside its obvious target demographic, it is also quite popular with young adults that were kids in the late 1990s when the series was introduced, as well as with Otaku and Nintendo and JRPG fans in general. It can also be argued that Pokémon has been the greatest influence on Internet culture out of all mega-media-franchises, considering its popularity on Image Boards and the number of memes, videos and fan tributes that the franchise has spawned.
Replacement Scrappy: Zoroark. No matter how much Japan tried to advertise the Pokemon as the next coming of Lucario, it just wasn't going to happen.
Rescued from the Scrappy Heap: Roost and Brave Bird are two moves that greatly improved the potential of Pidgeot, making it at least able to hurt or last against opponents.
Pidgeot also got Tailwind, which gave it brief notability until it was made available for a lot more Flying Pokémon in HeartGold and SoulSilver.
Dragonite, in gen 3, its Overshadowed by Awesome by Salamence. In gen 4, it got better, and become a "stronger slower Salamence" since the latter lacks Outrage, until Salamence get Outrage, and even after Salamence ban, it isnt used enough to the extent of Salamence. Then come gen 5, giving it several new moves to play with, better metagame that fit its playstyle, and a new awesome Dream World ability. Nowadays, its considered as the best Dragon Type pokemon in OU, in the same tier where Latios and Latias is allowed.
Mr. Mime, Jynx, Probopass and Garbodor are all generally disliked by the fandom because of their rather disturbing and unorthodox designs, compounded with the fact that they don't do well in competitive play. Despite fans considering Conkeldurr and the Kami trio to be similarly ugly, they get off more lightly because they happen to be Awesome Yet Practical.
Its pre-evolved form Aipom can be pretty annoying, too, and not in a good way.
Phione is often considered pointless, due to it being a much weaker version of Manaphy. It has worse stats, a worse movepool, and it doesn't even evolve into Manaphy.
Plusle and Minun, two Pokemon basically designed to work together in Double Battles. This failed, because not only are Double Battles rare outside of the Orre games, but they both have the same type and are very weak regardless. Being Pichu lookalikes did not help them, nor did being advertised EVERYWHERE in Gen. 3.
Pachirisu isn't any better for having 2 abilities that are otherwise useless, but they can also be annoying when trainers use one against you in the early half of D/P/Pt, thanks to their high speed and surprisingly high defenses.
Whitney's Miltank, especially in the original G/S/C games. In HG/SS, however, with a combo team of the Onix and Machop you got in separate trades, she'll be a breeze.
Cooltrainers/Ace Trainers in the later games, due to them usually being stronger than you at some point in the game and carrying healing items on hand.
Veteran Trainers from Gen. V in a similar vein to the Ace Trainers, even with the Rotation Battles.
"The rain continues to fall..." All weather conditions have a lengthy, annoying animation and an annoying message EVERY SINGLE TURN. It gets old fast. Fixed in Generation 5.
"Gyarados's Intimidate cuts X's Attack!"
"Dialga is exerting its Pressure!"
The above two were fixed in Generation 5 (instead a little bar appears that lists the effect for a split second without breaking the pace).
"Wild Entei/Raikou/Suicune fled!" Especially bad with those three in particular as, unlike other roaming Legendaries, measures taken by the player to trap them could be rendered moot by them using Roar to end the battle.
Double Team increases the user's evasion rate, and can be used repeatedly. There was no way to counter its effect in the first generation (aside from an Always Accurate Attack), and just about every Pokémon can be taught the move from a TM. Even in later generations, skills that reduce evasion or increase accuracy are in short supply. Competitive players actually ban Double Team for this very reason.
More to it than that: As of Generation V, there are eight types of moves that can hit for sure-fire damage: Normal, ghost, flying, electric, fighting, grass, dark and steel. Steel itself resists a great many of these types; and Shock Wave, a move that could at least hit steels for neutral barring typing is no longer a TM. While fighting beats steel, Vital Throw has the odd drawback of going second (with many of its users getting hurt heavily as a result of it). Likewise, aura sphere is a move seen more in Ubers tier, with other legal options having much better move-sets to run making aura sphere counter-intuitive. Clear Smog was introduced in Generation V, but because damage has to be done before stats are reversed, it'll never hit a steel type anyway. Because of this, a steel type pokemon could risk increasing its evasion to the maximum and never getting hit, and for poorly if it does. Imagine pokemon like Jirachi, Bronzong or Metagross with these options! Aside from those specific example, the metagame would centralize on the evasion stat and counter-counters to that stat, such as the case that Garchomp did in generation IV (in Garchomp's case, all teams were: Garchomp, garchomp counter, garchomp counter, garchomp's counter-counters. Now, replace that with double team, but on every pokemon) that the metagame would stagnate.
Trapping moves in R/B/Y are a nightmare because until the later games, your Pokemon cannot move when the opponent uses Wrap/Clamp/Fire Spin.
The Safari Zone. Beloved as it was in Generation I for its simplicity, other versions introduced odd gimmicks to it to the point where the safari zones became too tedious to bother with until it was removed in Generation V.
"Hey, [Trainer's Name], good morning. Are you awake? We just battled and beat a GEODUDE! I raised my Pokémon properly! CLICK!" If you accept the phone numbers of even one trainer, expect moronic calls like this every time you finish a battle.
Actually, in HGSS, you don't have to accept it (though it still makes an annoying sound, and if you have to open the Pokégear, you will have to listen to it).
They thankfully added Wi-Fi Events in Generation IV. Unfortunately, they didn't use it until Platinum...
Even with the Wi-Fi events, there's still a scrappiness to it since they only happen for a certain amount of time before being Lost Forever. If you were unable to get the Pokémon/item being given away (maybe due to not having the game at the time), you're out of luck, since they only gave away most things (Secret Key, Member's Card, Oak's Letter) once.
Also, not everyone can even access them - for example, if you use WPA (and have no idea how to/are not allowed to change this), you're out of luck, since DS Wi-Fi only accepts WEP. Your only hope is to visit a friend that has it, find a free open hotspot, or (in Gen V and later which are DSi-enhanced) getting yourself a DSi, DSi XL, or 3DS.
Poison draining a Pokémon's HP on the field. Nerfed in Generation IV, where it can't actually faint a Pokémon, only leave them at one HP, and removed entirely in Generation V.
Critical Hits can really screw you over when you're trying to catch a rare pokémon.
Pokémon Contests and the Pokéathlon have this effect as well. Since both pull different kinds of stats from the Pokémon and have different methods of gameplay than the usual battle, you can easily find yourself partaking in them for hours once you get the hang of it.
Pokestar Studios is most definitely this. Here the player partakes in mock battles to create movies.
Squick: The spiral on Poliwag's stomach? That's meant to be Poliwag's innards as seen through the translucent skin on its belly. In fairness, this is true of tadpoles in general.
Some Exeggcute have their shells cracked open. In other words, you can see their insides...
Despite resembling eggs, they are more characteristic of plant seeds or coconuts, but still.
Volt Switch from Rotom-W, which is usualy combined with Scizor's U-Turn.
Stealth Rock. A move so good that it defines the entire metagame of fourth generation.
Gen IV buffed Dragon-type moves: Outrage was boosted from 90 base power to 120, and from a Special attack to Physical. Draco Meteor, a new addition, was nearly unresistable move that deals massive damage. it drops the attacker's special attack by two stage but it can switch, anyway. It can be learned by every Dragon-type, and is partially the reason why Latios, Latias, and Salamence were claimed broken.
Similarly, Leaf Storm (same as Draco Meteor, except that it's grass type). It can be learned by Serperior, which can have the Contrary ability - this makes stat decreases into increases instead (though the reverse holds true as well). Effectively, a Contrary Serperior with Leaf Storm can raise unholy hell on the unprepared.
That One Boss: Whitney and Lenora. Most legendaries are this as well, not because they're so powerful, but because they're so hard to catch.
They Changed It, Now It Sucks: You won't be too hard pressed to find people who stubbornly claim that there are only 151 Pokémon, or that Gold/Silver/Crystal were the only good sequels, or that Generation III was absolute shite (FireRed and LeafGreen notwithstanding). In fact, the GBA generation has probably gotten the worst of it, due to the inability to trade and battle with games from the prior two generations.
Blissey stops pretty much any special-based attacker from doing its job, and is quite omnipresent.
Not as of Generation V; in which Psyshock was added to many special attacker's arsenals, which really hurts walls like blissey who focus only on Special Defense. It's still a fair threat, but not as much as it was during the Generation 2-4 metagames.
Poor, poor Flareon.
Garchomp is scrappy enough to get him banned in Generation IV due to its stats, typing, and evasion ability.
On low-high tier ends(yes you read it right, low-high tier) theres Electivire and Umbreon back in gen 4. Both are claimed to be too weak in OU yet Noobs used them so much that it become OU where they cant compete*
Tiers, at least the Smogon ones, are decided by usage statistics
. Especialy the former thanks to Hype Backlash(Electivire is a good pokemon on its own right with good stats and coverage, and ability that make it a good partner to Gyarados, much like Jolteon making it seems to be a huge threat. Unfortunately, Super Effective is not same as a KO. And Electivire lacks a powerful STAB move and unlike Gyarados, lacks good stats buffing move as well, combined with fragility means it cant set up anyway). It was so bad that one generation after that, the case is still commonly brought up amongst competitive player.
Black Kyurem was this among the Ubers for a while, due to its poor defensive typing and lack of a good STAB Ice-type move. It was later relieved of this status when it dropped down into OU, and was eventually discovered to be one of the best Pokémon in standard play! A lot of people also enjoy using it for novelty value since it has the 2nd highest Attack stat and BST in the game, and no hindering ability like Slaking and Regigigas - not to mention a much cooler design.
Charizard gets this treatment. Despite being the most fanboyed-over Pokémon in the franchise, it's in NU (the lowest tier) and is very easy to play around. This infuriates its fanboys, who insist on using it in high tiers (includingUbers). Which, in turn, infuriates serious metagamers who are sick of seeing Charizard on every Uber team, which infuriates the Charizard fanboys, and so forth.
For the most part, this only affects a couple of abilities and attacks (most dealing with infatuation), along with breeding purposes. Perhaps mons like Mewtwo simply aren't impressed by love?
Mew. Like Mewtwo. While it doesn't speak, its cute, pink design and the fact that it is referred to as "giving birth" is enough (completely reasonably) to cause a large number of fans to think of it as female. (A small number of fans also think of it as male due to the masculinity of its clone and also due to its voice actor.)
Chikorita. The most feminine-looking of the starters, but they have the standard gender ratio of seven males to one female.
Like Mewtwo, genderless Darkrai is often referred to as male because of its telepathic voice in the anime, and because its counterpart Cresselia is female. Even the dubbers of the 10th movie were not immune, although Darkrai is clearly labeled as male (along with other legendaries) in the Pokémon Mystery Dungeon series.
Despite the fact that some legendaries have genders (and can be female), Meloetta, the most feminine-looking Legendary of all time, is genderless like most other legendaries.
Despite their names, Slowbro, Kingler, Goldeen, Seaking, and Mr. Mime can be of either sex, but since they were introduced before the introduction of gender mechanics, it can't really be helped. Slowking, Kingdra, and Slaking, however, were introduced alongside or after gender mechanics. Though Slaking was saved - at least somewhat so - for those who recognised the pun behind the name.
Some of those can be blamed on Dub Induced Plothole, since their original names didn't mention a gender, like Mr. Mime being Barrierd. Not all though, most notably Slowking, who was already Yadoking in Japan despite being introduced on the generation that also introduced genders. That, and it evolves with a King's Rock.
Eevee is often referred to as a girl, at least partially due to its name, as is anything it evolves into, despite seven-eighths of them being male. Sylveon is particularly feminine in appearance.
Reshiram and Zekrom are genderless, but both of them have masculine voices in the anime, which undoubtedly means they'll be referred to (and thought of) as male. Adding to this confusion, both of them are also thought of as female on occasion; Reshiram has a feminine design according to Word Of God, while Zekrom has wide hips and also represents yin, which is feminine in mythology (although the latter is being mitigated by Game Freak attempting to show that Zekrom is the manliest Pokémon ever).
Ash's Pikachu was struck with the biggest case of this, with heated debate over its gender until it was finally confirmed as male 15 years after its debut.
Both Gardevoir and Gothitelle wear "dresses" but can be male. In a similar vein, Lopunny looks a lot like a Playboy Bunny, yet 50% of them are male.
For more fuel, Gothitelle is the evolution of Gothorita, the evolution of Gothita. As in Elegant Gothic Lolita. And they have, respectively, a 50% and 25% chance of being male.
The Woobie: Cubone, due to Team Rocket killing its mother in Lavender Town. It isn't called the Lonely Pokemon for nothing.
Pichu, because of its inability to handle its electricity like its evolved forms Pikachu and Raichu can.
The Pokedex entry for Ralts in the Emerald version states that it gets scared when it senses hostile emotions.
Many Pokémon and NPC names are portmanteaus or puns, and the translators took time to create a portmanteau or pun when translating from one language to another.
Renaming the Evil type to Dark type may count this, especially considering the black colour of nearly all the Dark Pokemon.
Team Rocket is based off of the Yakuza in the Japanese version. In the other versions, they are based off of the more locally recognizable Italian Mafia stereotype, even down to the boss being named "Giovanni".
The Champion Ribbon is known as Hoenn Champ Ribbon in Japanese games. Except it's awarded for either Hall of Fame existing then. Fixed with description in Gen IV as it states "in another region". Sinnoh doesn't have that problem as Johto has separate ribbon for True Final Boss.