If Charizard can melt boulders with its flames, how are its fire attacks still not very effective against Rock-types? Well, since the majority of Gen I Rock-types have poor Special stats note Among the fully-evolved, only the fossil Pokémon have decent Special stats, with at least 60, being resistant to Fire moves may not be enough for them to withstand Charizard's powerful Fire moves.
Rock-types in general have better physical defense than special defense. Top this with Charizard's high special attack, and it can deal more damage to them than usual.
Mega Charizard X embodies all three members of the Tao trio: it has Reshiram's typing, Zekrom's color scheme, and base stats similar to normal Kyurem.
Why does Raticate/Rattata have the ability "Guts"? Because of the saying "A cornered rat will bite the cat".
Flame Wheel looks like an odd pick for a breeding-only move for Rattata. How often does one associate rats with fire? Then I realized it's actually a reference to The Tale of the Bamboo Cutter. The third prince who sought Kaguya-hime's hand in marriage was asked to bring her the coat of the Kaso, a fire-rat. (Even better in Shin Megami Tensei: Strange Journey, when you encounter a Kaso in the lower portions of Antlia, the fire coat appears to be spinning.)
Alolan Raichu's ability grants it boosted speed while Electric Terrain is covering the field. Why is that? Well, the electricity covering the ground lets it float better, allowing it to spend more of its psychic power on actual movement instead of floating.
Why does Alolan Raichu float on its tail, other than for the heck of it? Alola happens to be home to a evolutionary line of living sand: Ground-types that swallow their prey from below. Official art shows them doing this to Pikachu: clearly Raichu evolved to try and avoid this fate.
Too bad it doesn't have Levitate...
Why would Vulpix be able to learn Grass Knot? Vulpix is a fox. Foxes are known for their cunning and cleverness. Who's to say that Vulpix can't use Grass Knot like a snare for a meal?
Why are Zubat and its evolved forms Poison-types? Bats are sometimes known to carry disease. There's also a species of bat called the Mexican free-tailed that can thrive in a warm cave filled with poisonous gas.
Why do Zubats so aggressively gang up on you when you enter a cave? Well, Zubats are blind and have to compensate with their highly sensitive hearing. It could be that they just spook easily and thus expect every sound they hear to be a potential threat.
Alolan Dugtrio has two main features that set it apart, its fabulous blonde hair and steel type, and what does that make them? A hairmetal trio.
The Machop line has a 3:1 ratio of males to females. With so few females, there must be a lot of competition for available mates... so naturally, the Pokémon would train to be as strong as they can!
Except female Machop can mate with any male member of the Human Like group.
That just means there's even more competition, reinforcing the theory.
Alolan Grimer's fruity colors caused people to complain about it, and Alolan Muk has those same fruity colors, except they shift about its body. Alola is an archipelago region with several islands, meaning that oil spills are a real threat to the wildlife, and since oil takes on a prismatic sheen in sunlight...
Alolan Exeggutor's size difference is tied to that of real-life palm trees: they are tall and thin on islands and short and stocky elsewhere as a response to different weather and water conditions.
Rhydon evolving into Rhyperior. According to a certain Let's Play, Rhydon is a tank that evolves into a Gundam. Gundams are effectively bipedal, agile tanksnote agility is actually a natural advantage of bipedalism; humans are considerably more dextrous than many quadrupedal animals, and thus this evolution is entirely logical.
Staryu and Starmie's Pokédex entries note the in-universe theory that they came from outer space. They can regenerate any part of their body so long as the stone in their center is intact, and said stone flashes to send signals into space. Enter Deoxys, who is explicitly from space, can regenerate any part of its body as long the stone in its chest is intact, and communicates by projecting light from the stone. Deoxys may not have been the first of its kind to visit the world of Pokémon...
Magmar is allegedly based on the blue-footed booby, hence the fact that it has a beak and its Japanese name being "Boober", but beyond that, it doesn't look anything like a booby bird. So why would they pick such a random bird as the inspiration for this Magma Man? Because blue-footed boobies are only found on the Galapagos a series of volcanic islands!
How would people in the games have discovered Leafeon and Glaceon, two of Eevee's evolutions? It's doubtful it was something as random as "Hey, what would happen if Eevee touched this rock?", but for anything else to work, they would have to have already known about it. It happens that Sinnoh, the first region to feature those two Eeveelutions, is also the first place where you can find Eevee in the wild. It's possible that Eevee are native to Sinnoh, and that people have known about Leafeon & Glaceon for as long as they've known about Eevee. The reason they haven't been mentioned in the games sooner is probably because the information is useless outside of Sinnoh.
Except that the only place in the wild that you can find wild Eevee in is the Trophy Garden. Even then, they don't become available until after you beat the Pokémon League. According to Bulbapedia, Mr. Backlot's butler imports the Eevee in after Backlot tells you that there are Eevee in his garden so that he doesn't get outed as a liar.
Or they could be native to Kalos, the first region where Eevee can be found in a completely natural setting, which has all the methods of evolving an Eeveelution up to Sylveon located in the same region.
Porygon is called the first "artifical Pokémon" and it consists completely of computer code. Its various Pokédex entries say "A man-made Pokémon that consists entirely of programming code. It is capable of moving freely in cyberspace", "An artificial Pokémon created due to extensive research, it can perform only what is in its program", or "It is a man made Pokémon. Since it doesn't breathe, people are eager to try it in any environment". Since it can do whatever it is programmed (taught moves and sprite animation), tested in different environments (meaning different games), and moving through cyberspace (can refer to online trading/battling), this means that Porygon, like all other mons in the video game, is computer code that forms the Pokémon. Meaning that Porygon technically is a real life Pokémon!
A relatively small one, but one that could double as a possible Brick Joke, in a sense of the term. Back in the first generation, when you fought either of the two available Snorlax and defeated them, instead of catching them, you were given dialogue that they "returned back to the mountains", indicating that Snorlax's natural habitat is in the mountains. At that point, most would simply write it off as the mountains appearing to the north of Kanto in whatever printed artwork was available for the game. Come Gen IVnote Gen IIIif you want to be pedantic, we are introduced to Munchlax, the perceived pre-evolution of Snorlax. Luckily, these guys can be found in the wild, albeit annoyingly rarely. Now, what nation can they be caught regularly in? The Gen IV region, Sinnoh, which is, to date, the most mountainous region in the series.
This might overlap with continuity nod, but take a look at Moltres' Pokédex entry in the Sinnoh games. They mention that its arrival signals an early spring. Now take a look at its entry in the Johto games. They state that Moltres ends winter early when it travels to cold climates. The people of Sinnoh think that Moltres merely signals that Spring will come early, like the Groundhog myth, which explains the wording in the Pokédex!
Why does Mewtwo's tail appear to be connected to its belly rather than its rump? Think about the fact that it and Mew have a sort of embryonic theme, and you realize. It's not a tail, it's an umbilical cord.
Many of Umbreon's Pokédex entries mention that it sprays poisonous sweat from its pores. Most fans, if they paid attention to this at all, thought it was because it can learn Toxic by TM, but it was still odd and random because many Pokémon learn that move without the Pokédex feeling the need to point it out, and it would make more sense to have information more specific to Umbreon instead of highlighting a random move it couldn't even learn naturally. Fast-forward around 20 years later to 2018, when the old 1997 Gold demo was leaked online and subsequently datamined, it revealed that Umbreon was originally a Poison-type instead of a Dark-type, and evolved from Eevee via a now Dummied Out Poison Stone, which explains those Pokédex entries. They're all remnants from that!
A similar leak has revealed that early on, Blastoise was actually completely separate from the Squirtle line, and Wartortle evolved into something different. Blastoise even had a baby Blastoise pre-evo note : It's sadly only known by a remaining back sprite and no front sprite, though speculative fan artwork exists. It basically is just a smaller version of Blastoise with tiny cannon buds and what appears to be a cutesy anime water bubble coming out its nose. Some fans think this possibly explains why Wartortle develops a swirling tail that is not retained by Blastoise, and why Blastoise suddenly develops cannons when Squirtle and Wartortle don't have them; when these two lines were merged it led to minor design inconsistencies.
Ponyta becoming a more traditional unicorn makes sense when you remember the unicorn is the national animal of Scotland, which Galar is partly inspired by.
Said unicorn is a Psychic-type, not the Fairy-type that was expected, because unicorns in lore (and in ability for said Galarian Ponyta) are known for healing poisons. Fairy-type Pokemon are vulnerable to poisons and thus cannot so easily cure it. Unicorns are also associated with telepathy which is strongly associated with the Psychic-type.
The Pokémon Paras is said to be a bug that is being controlled by sentient mushrooms. On its own, that's creepy enough, but what would happen if those mushrooms ever decided to take over a human? It would be a regional zombie apocalypse!
You think that's bad? Watch this. The mushroom on its back is slowly taking over the Paras, and by the time it evolves, it has explicitly been entirely taken over by the mushroom and is nothing but an empty shell. The first stage is implied to have the same level of sentience as most Pokémon, but the second is just a mindless zombie. Imagine yourself as the Paras...
By the way, guys, Paras is designed after a real-life fungus which takes control of an ant in order to spread its own seeds. It's not 'intelligent', per se, but it has something going for it.
"It happened one morning a boy with extrasensory powers awoke in bed transformed into Kadabra." That is the Pokédex entry for Kadabra in FireRed. The question is, which of the Kadabra you've ever battled was that boy?
Ten bucks says, it was Sabrina's brother. I mean, she did have psychic powers, so it stands to reason that if she had a sibling, s/he would have powers too.
That would explain the whip from Generation I. Kadabra doesn't want to battle cue whip crack Kadabra used Psychic!
It's stated that the crystals in Alolan Grimer's mouth, its "Teeth", are both indestructible and toxic. Alolan Muk's crystals are also stated to be the same thing and said crystals are said to fall out constantly. Put two and two together and...
Evolving Exeggcute in general. Count the number of heads on Exeggcute, then Exeggutor. You should realize that their numbers are different then.
The Pokédex says that Exeggutor heads can fall off and become Exeggcute again, so presumably only a few heads become Exeggutor and the rest go on to form new batches of Exeggcute.
Some horror regarding Farfetch'd it's an Endangered Species that has been hunted to near-extinction for its meat, and thus far the only Pokémon currently known to be eaten by humans. Now consider the fact that it's not very useful in battle and ask yourself...in a world where Pokémon battles are a major societal thing, is that why people think nothing of eating the poor little leek-obsessed duck? Do they think it's okay because they believe Farfetch'd is a "useless" Pokémon that no one will want to battle with?
Ditto can breed with any other Pokémon, which makes perfect sense since it can Transform. But really, think about what that means. It is Transforming into other Pokémon to induce them into having sex with it (or however it is that Pokémon breed). And of course, when you leave Pokémon at a day care center, you don't actually tell them the purpose of such is to get them to breed, so Ditto is doing this of its own will. Ditto is an in-universeMemetic Molester, able to seduce any (non-gender neutral) Pokémon by shapeshifting into their image of a physically ideal mate.
And the real kicker who's to say it doesn't do this to humans?
Or it could be the other Pokémon/person forcing Ditto to do it... Hey, I don't hear any canon evidence to support the idea that every single Ditto in the world wants to make kids with random people.
Ditto can manipulate its own DNA code, so potentially it could assume the form of anything that uses Deoxyribose nucleic acid, such as bacteria. While you're all sitting on that (bioweapons imminent), it's probably not actually assuming the real form of rocks and other non-DNA things so much as simply imitating their general shape.
It is mentioned that Eevee has highly-mutable DNA. Which means it can evolve into several different "mature" forms... or become more susceptible to cancer, polysomies, and degenerative diseases. (Which may be why these cute Pokémon are exceedingly rare.) That's your depressing thought for the day.
If the Pokémon Center can heal all the damage done by all the various devastating attacks, I think it can heal those things too, if they even occur at all. Part of Eevee's rarity can be explained by its gender ratio.
Some Dex entries explain that Nidoqueen is at her fiercest when protecting her young. This seems to be an instinct endemic to most sentient creatures, so perhaps it's to be expected... but keep in mind Nidoqueen are sterile and have been since breeding was introduced. Maybe Nidoqueen is especially protective of her children because she knows she can't have any more if she loses them?