Moves
Aside from Gen 1, the generation introduced the most new moves (including generation unique moves ie. Z moves).
Gen IV with 113 -> Gen VII 107 -> Gen III 103
"It walks in zigzag fashion. It is good at finding items in the grass and even in the ground."
Zigzagoon
In Gold, Silver, and Crystal, the character who gives the player the Togepi Egg.
Mr. Pokemon or Prof Elm's Assistant
The Unova region is based on this real life country.
THE USA BAYBEE
The dead pokemon from one of the movies I jokingly post the image of every year. It has the caption "The Letuce on a McChicken".
Celebi
This is one of the two Fire types able to learn Teleport.
Arcanine OR Magmar
"If it senses strong sunlight, it opens its folded petals to absorb the sun's rays with its whole body."
Cherim
This is the Egg Group Shedinja belongs to.
Mineral Group
The Hisui region is based on this real life island.
Hokkaido
This is the character shiny Carnivine looks like in Pokemon Reborn.
Piranha Plant
Aside from ending the battle or having no other Pokemon to swap to, this ability (2 answers) is the only other way to prevent a U-Turn user from switching out.
Wimp Out or Emergency Exit
"A Pokémon ancestor that was reanimated from a fossil. It lived in the sea and hunted with claws."
Anorith
DAILY DOUBLE
Aside from the Fairy Group, this is the only other Egg Group to contain mythical pokemon.
Water 1
The city the Poke Ball Factory is located next to.
Laverre City
This is the Pokemon Misty transforms into in the Pokemon anime.
Vaporeon
DAILY DOUBLE
The name of the unique category of move in XD: Gale of Darkness and Pokemon Colosseum?
Shadow Move
"It is a common sight around fishing ports. It is known to rescue people and carry off prey."
Floatzel
Despite not being able to battle, eggs have stats. This is the base Speed of an egg.
10
The place fossils are mined in Gen IV.
The Underground
In Pokemon Ranger, if you choose a female ranger, you have this pokemon as a partner.
Plusle
The move Meowth was unable to learn in the anime because of the effort exerted to learn the human language.
Pay Day
"It gives off so much light that it can be seen even from space. People in the old days used its light to send signals back and forth with others far away."
Ampharos
If a male Quagsire holding an Everstone and a female Tauros are in Paldea, this is the pokemon their egg hatches into.
Paldean Tauros
These are the two Pokemon in the background of the Electric Mode of the Pokemon Stadium 2 stage in Super Smash Brothers.
MAGNEZONE & Electivire
On release, this Pokemon was considered metagame defining SS+ tier in Pokken Tournament DX.
Shadow Mewtwo