Game Origins
In these games it was first stated "Dresses are comfy, and easy to wear"
Pokemon Black 2 and White 2
A beloved pair of Hoennian Pokemon were separated as version exclusives in Pokemon Mystery Dungeon Red and Blue Rescue Team, this one was exclusive to Red Rescue Team
Plusle
Female has a longer cape
Roserade
The first legendary skin in Pokemon Unite
Pirate Cinderace
An insult to Egypt
Sigilyph
These were the first games to introduce a game exclusive alternate Legendary form
Pokemon Mystery Dungeon: Explorers of Time, Darkness and Sky
The Kantonian and Alolan variant of the Meowth evolution line is exclusive to this version of Pokemon Let's Go
Pokemon Let's Go Eevee
The male has black necks while the female has beige
Dodrio and Doduo
This Pokemon line was playable in the Unite closed beta/alpha, and was seen as a tutorial enemy but was not playable for 2 months in the official release
Squirtle, Wartortle, and Blastoise
Nintendo done did a racism
OG Jinx
In these games, Ash Ketchum made his first appearance
Pokemon Sun and Moon
Pokemon Mystery Dungeon Explorers of Time, and Darkness each have a version exclusive 2 stage Sinnohan Evolution line, and this one belongs to Explorers of Time
Riolu and Lucario
The female's left "ear" is shorter
Sneasel
The maximum amount of points dunkable in one of the outermost rings of the standard Unite arena
179
The average glue eating kindergartener
Alolan Grimer
This is the only game in which Pokemon Trainer Red has ever used a Tauros
Pokemon Stadium 2
In the Japanese exclusive Wiiware Pokemon Mystery Dungeon trio of games, Banette was exclusive to this game
Pokemon Mystery Dungeon Let's Go! Stormy Adventure Squad!
The male has a notched fin
Gible, Gabite, and Garchomp
In the newest quick battle mode of Pokemon Unite you can play as Zapdos, and these are it's attacks
Zap Cannon and Thunder
The hentai antagonist we all know and love
Cradilly
The first games where you can visit Mauville City
French Copies of Pokemon Gold and Silver
This Pokemon Gold exclusive has a Pokemon Silver counterpart/opposite that made them a duo that very few know about because Generation 4 messed with it
Mantine
The female's feather is shorter
Gulpin
Since the earliest datamines of Pokemon Unite we knew that this Pokemon was in the game, but they would not be made playable until 7 months after the game's official release
Aegislash
The hidden Mickey
Loudred