Pokédex Entries that Mention Other Pokémon

If dex entries have multiple games listed as its source, it's because the entry was reused in those games. Entries labelled from Green are from FireRed, because they were first translated for FireRed.

Things I already noted need to be grouped: Karrablast & Shelmet, Mandibuzz & Cubone, Heatmor & Durant

more categories: evolutionary differences

The Poli Line

Gold (& Stadium 2, LeafGreen, HeartGold, Y, Scarlet)
If Poliwag and Poliwhirl hear its echoing cry, they respond by gathering from far and wide.
Crystal
When it expands its throat to croak out a tune, nearby Poliwag and Poliwhirl gather immediately.
Diamond/Pearl/Platinum (& Black/White, Black 2/White 2)
It gathers groups of others as their leader. Its cries make Poliwag obey.
Brilliant Diamond/Shining Pearl
A group of Poliwag and Poliwhirl will form with a Politoed as the leader. Politoed's cries make the Pokémon of the group obey.
Moon (& Violet)
It's the leader of Poliwag and Poliwhirl. When Politoed roars, they all cower in fear.
Ultra Moon
The longer and more luxurious the curled hair on its head, the greater the number of Poliwag and Poliwhirl that will obey it.

Arceus

Legends Arceus
Radiant light caused Dialga to take on a form bearing a striking resemblance to the creator Pokémon. Dialga now wields such colossal strength that one must conclude this is its true form.
Legends Arceus
It soars across the sky in a form that greatly resembles the creator of all things. Perhaps this imitation of appearance is Palkia's strategy for gaining Arceus's powers.
Shield
It was modeled after a mighty Pokémon of myth. The mask placed upon it limits its power in order to keep it under control.
Ultra Sun
Having been awakened successfully, it can change its type and battle— just like a certain Pokémon depicted in legends.

blah blah blah blah

Karrablast, Shelmet, and their Weird Evolution Method

Every single Karrablast dex entry references Shelmet, a rare trait! It makes sense, though, since it's not like you'd be able to figure out this evolution method without outside help.

Black (& X, ΩR)
These mysterious Pokémon evolve when they receive electrical stimulation while they are in the same place as Shelmet.
Black 2/White 2 (& Y, αS)
For some reason they evolve when they receive electrical energy while they are attacking Shelmet.
Sword
Its strange physiology reacts to electrical energy in interesting ways. The presence of a Shelmet will cause this Pokémon to evolve.
White (& Y, αS)
It evolves when bathed in an electric-like energy along with Karrablast. The reason is still unknown.
Black 2/White 2 (& X, ΩR)
When it and Karrablast are together, and both receive electrical stimulation, they both evolve.
Shield
It has a strange physiology that responds to electricity. When together with Karrablast, Shelmet evolves for some reason.

Wow, guys, I think Karrablast and Shelmet might evolve when exposed to some kind of electrical force. Wonder how I got that impression.

White
When they feel threatened, they spit an acidic liquid to drive attackers away. This Pokémon targets Shelmet.
Shield
It spits a liquid from its mouth to melt through Shelmet's shell. Karrablast doesn't eat the shell— it eats only the contents.
Sword
When attacked, it tightly shuts the lid of its shell. This reaction fails to protect it from Karrablast, however, because they can still get into the shell.

I prefer the few entries they have about their predator-prey relationship. I suppose it makes sense that Shelmet is the prey, since Escavalier is the one that gains in the evolution, as opposed to Accelgor losing its armor to become very fast? Accelgor has no mention of any of this in its dex entries, by the way. It does have a cute entry in Sword about how it's a popular choice of main character in comics.

White (& Y, αS)
These Pokémon evolve by wearing the shell covering of a Shelmet. The steel armor protects their whole body.
Black 2/White 2 (& X, ΩR)
Wearing the shell covering they stole from Shelmet, they defend themselves and attack with two lances.
Sword
They use shells they've stolen from Shelmet to arm and protect themselves. They're very popular Pokémon in the Galar region.

Protecting the Babies

Ultra Sun
Its wings are covered in toxic scales. If it finds bird Pokémon going after Caterpie, Butterfree sprinkles its scales on them to drive them off.
Ultra Sun
If you carelessly approach it because it's cute, the boss of the pack, Ninetales, will appear and freeze you.
Shield
These Pokémon create air-filled bubbles. When Azurill play in rivers, Azumarill will cover them with these bubbles.
Ultra Moon
When a small Wailmer is attacked by Sharpedo or Dhelmise, its whole pod works together to protect it.
Sword
If it sees any packs of Darumaka going after Snover, it chases them off, swinging its sizable arms like hammers.
Ultra Moon (& Scarlet)
It's always searching for food for Vullaby. When it finds a weak Pokémon, Mandibuzz swoops it right off to its nest.
Sword
Although it's a bit of a ruffian, this Pokémon will take lost Vullaby under its wing and care for them till they're ready to leave the nest.
Scarlet
When Litleo are young, female Pyroar will teach them how to hunt. Once the Litleo mature, they will leave the pride and set out on their own.
Shield
It acts as a caretaker for Dewpider, putting them inside its bubble and letting them eat any leftover food.
Scarlet
A caring Pokémon, Araquanid carries Dewpider around inside its water bubble to protect them as it walks. It protects its food in its bubble too.
Sword
It's capable of flying faster than 120 mph. It battles alongside Dreepy and dotes on them until they successfully evolve.
Violet
It lives at the bottom of ponds and swamps. It will carry Wooper on its back and ferry them across water from one shore to the other.

possible additions: sealeo LA

Black
Leavanny dress it in clothes they made for it when it hatched. It hides its head in its hood while it is sleeping.
Scarlet
Sewaddle chews on leaves to make its clothing. It's trying to mimic the leafy garment Leavanny first dressed it in.
Sword
It keeps its eggs warm with heat from fermenting leaves. It also uses leaves to make warm wrappings for Sewaddle.

separating this one because i think its so cute 🥺

Meowth and Murkrow's Collecting Spree

Crystal (& X)
It hides any shiny object it finds in a secret location. Murkrow and Meowth loot one another's stashes.
Moon
It loves shiny things. It often fights with Murkrow over prey they're both trying to catch.
Ultra Sun
When visiting a junkyard, you may catch sight of it having an intense fight with Murkrow over shiny objects.
Ultra Sun
It will pick up anything it finds on the ground. Sometimes it finds coins, so Murkrow and Meowth will go after it.

Poor Wimpod gets caught in the middle of the shiny-hunters, huh?

The Slowpoke Line (and Shellder)

I think the Slowpoke line may hold the record for the most 'dex entries to reference another Pokémon. And by "another Pokémon", I mean Shellder, it's almost all about how Slowpoke was bitten by Shellder and evolved. Let's start with devolution, the concept of reversing a Pokémon's evolution, something you shouldn't generally be able to do.

Yellow (& Let's Go Pikachu/Eevee)
Slowbro Lives lazily by the sea. If the Shellder on its tail comes off, it becomes a Slowpoke again.
Gold (& Stadium 2, HeartGold, Violet)
If the tail-biting Shellder is thrown off in a harsh battle, it reverts to being an ordinary Slowpoke.
Ultra Sun
Spacing out is basically all it does. It turns back into Slowpoke if its tail, along with Shellder, breaks off.
Shield
Being bitten by a Shellder shocked this Pokémon into standing on two legs. If the Shellder lets go, it seems Slowbro will turn back into a Slowpoke.
Ruby/Sapphire/Emerald (& ΩRαS)
Slowking Slowking undertakes research every day in an effort to solve the mysteries of the world. However, this Pokémon apparently forgets everything it has learned if the Shellder on its head comes off.

The Slowpoke line is, I believe, the main Pokémon line to reference devolution. I like that the RSE entry for Slowking implies the knowledge is stored in the Shellder? The poison wouldn't leave the body immediately. Although, it does say "apparently", implying this is more folklore than a set-in-stone fact.

Silver (& SoulSilver)
Slowbro Naturally dull to begin with, it lost its ability to feel pain due to Shellder's seeping poison.
Ruby/Sapphire/Emerald (& ΩRαS)
Slowbro's tail has a Shellder firmly attached with a bite. As a result, the tail can't be used for fishing anymore. This causes Slowbro to grudgingly swim and catch prey instead.
Diamond/Pearl/Platinum (& Black/White, B2/W2, BD/SP)
Though usually dim-witted, it seems to become inspired if the Shellder on its tail bites down.
Sun
It spaces out while gazing at the sea. With Shellder's poison flowing through its body, it becomes even spacier.
Moon
Whenever Shellder bites down hard on its tail, it gives Slowbro a flash of inspiration... which it forgets a moment later.
Sword
Galarian Slowbro A Shellder bite set off a chemical reaction with the spices inside Slowbro's body, causing Slowbro to become a Poison-type Pokémon.
Shield
If this Pokémon squeezes the tongue of the Shellder biting it, the Shellder will launch a toxic liquid from the tip of its shell.
Violet
Shellder bites down hard on Slowbro’s arm to suck out more poison. This seems to cause itching, so Slowbro occasionally lashes out.
Silver (& FireRed, SoulSilver, Y, Scarlet)
Slowking When its head was bitten, toxins entered Slowpoke's head and unlocked an extraordinary power.
Crystal
Every time it yawns, Shellder injects more poison into it. The poison makes it more intelligent.
Diamond/Pearl/Platinum (& Black/White, B2/W2, BD/SP)
Being bitten by Shellder gave it intelligence comparable to that of award-winning scientists.
Sword
Miraculously, this former Slowpoke's latent intelligence was drawn out when Shellder poison raced through its brain.
Sword
Galarian Slowking A combination of toxins and the shock of evolving has increased Shellder's intelligence to the point that Shellder now controls Slowking.

Sun
Mega Slowbro All the energy from Mega Evolution poured into the Shellder on its tail, leaving Slowpoke to be swallowed whole.
Moon
When bathed in the energy of Mega Evolution, Shellder converts into impregnable armor. There is virtually no change in Slowpoke.
Ultra Sun
Tremendous energy strengthened the power of the Shellder on its tail, but it doesn't really affect Slowpoke.
Let's Go Pikachu/Eevee
Having been swallowed whole by Shellder, Slowbro now has an iron defense. It's pretty comfortable in there, too.

Red/Blue (& mildly reworded in LeafGreen)
Slowbro The Shellder that latches onto Slowpoke's tail is said to feed on the host's leftover scraps.
Stadium
If its tail is bitten by a Shellder, Slowpoke evolves into Slowbro. The Shellder seems to like its crunchy tail.
Crystal (& X)
An attached Shellder won't let go because of the tasty flavor that oozes out of its tail.
Green (& FireRed, Y, Scarlet)
When a Slowpoke went hunting in the sea, its tail was bitten by a Shellder. That made it evolve into Slowbro.
Ultra Moon
Shellder, in its greed to suck out more and more sweetness from Slowbro's tail, has metamorphosed into a spiral-shaped shell.
Sword
Slowpoke became Slowbro when a Shellder bit on to its tail. Sweet flavors seeping from the tail make the Shellder feel as if its life is a dream.
Scarlet
Galarian Slowbro Shellder seems blissful over the taste of Slowbro even though the toxins seeping from the bite have caused Shellder to faint.
Ultra Moon
Cloyster Slowpoke tails are its favorite food. It has even been known to come up on land to look for Slowpoke from time to time.

Just like humans, Shellder (and Cloyster) love the taste of Slowpoke tails.

something something Don't worry, though, Shellder have plenty of predators to worry about.

Stadium
Kingler Said to be capable of prying open Shellder and Cloyster shells using its 10,000-horsepower pincer.
Gold (& Stadium 2, HeartGold)
Omastar Apparently, it cracked Shellder's shell with its sharp fangs and sucked out the insides.
Ultra Moon
Rufflet With its powerful legs and sturdy claws, it can crack even the hard shells of Shellder and pluck out their insides.
Moon
Bruxish It stuns its prey with psychokinesis and then grinds them to mush with its strong teeth. Even Shellder's shell is no match for it.

The Paradoxes

Pretty simple; these are the dex entries of Paradox Pokémon from the game they're not available in. They don't all have it, but many of them do.

Violet
It resembles a mysterious Pokémon described in a paranormal magazine as a Jigglypuff from one billion years ago.
Violet
This Pokémon somewhat resembles an ancient form of Volcarona that was introduced in a dubious magazine.
Violet
It slightly resembles a Magneton that lived for 10,000 years and was featured in an article in a paranormal magazine.
Violet
This Pokémon resembles Cyclizar, but it is far burlier and more ferocious. Nothing is known about its ecology or other features.
Violet
It resembles an illustration published in a paranormal magazine, said to be a depiction of a super-ancient Suicune.
Violet
It resembles an eerie Pokémon once shown in a paranormal magazine. That Pokémon was said to be an Entei regenerated from a fossil.
Violet
It bears resemblance to a Pokémon that became a hot topic for a short while after a paranormal magazine touted it as Raikou's ancestor.
Scarlet
It resembles a certain Pokémon introduced in a paranormal magazine, described as the offspring of a Hydreigon that fell in love with a robot.
Scarlet
It has some similarities to a Pokémon introduced in a dubious magazine as a Tyranitar from one billion years into the future.
Scarlet
Much remains unknown about this creature. It resembles Cyclizar, but it is far more ruthless and powerful.
Scarlet
Many of its physical characteristics match those of a Virizion from the future that was covered in a paranormal magazine.
Scarlet
It resembles a Pokémon described in a dubious magazine as a Terrakion that had been modified by an evil organization.
Scarlet
It resembles a mysterious object introduced in a paranormal magazine as a cutting-edge weapon shaped like a Cobalion.

Not a ton to say about these, but it is funny that Scarlet and Violet are, canonically, separate timelines from each other, because the book that Arven's parent idolized is different in each game. In Violet, for example, the Scarlet Book doesn't exist, and the prehistoric Paradox Pokémon are considered hoaxes.


Created Last Updated
February 27th, 2024 March 1st, 2024