Notes 1

Basics: Gens 1 & 2

Kanto Region:
151 Pokemon

Professor Oak

Bulbasaur, Charmander, Squirtle

Brock - Rock - Onix
Misty - Water - Starmie
Lt. Surge - Electric - Raichu
Erika - Grass - Gloom/Vileplume
Koga - Poison - Venomoth/Muk/Weezing
Sabrina - Psychic - Alakazam
Blaine - Fire - Arcanine/Magmortar/Rapidash
Giovanni - Ground - Persian/Nidoking

Lorelai - Ice - Lapras
Bruno - Fighting - Machamp
Agatha - Ghost - Gengar
Lance - Dragon - Dragonite
Blue - Mixed - N/A

Eevee's Evolutions:
Vaporeon
Jolteon
Flareon

Fossils:
Kabuto
Omanyte
Aeodactly

Pseudo:
Dragonite

Legendaries:
Articuno
Zapdos
Moltres
Mewtwo

Mythicals:
Mew

Johto Region:
100 (making the total 251 Pokemon)

Professor Elm
Breeding & Eggs
Shiny Pokemon
Dark & Steel Type
Hold Items

Chikorita
Cyndaquil
Totodile

Faulkner - Flying - Pidgeotto
Bugsy - Bug - Scyther
Whitney - Normal - Miltank
Morty - Ghost - Gengar
Chuck - Fighting - Poliwrath
Jasmine - Steel - Steelix/Ampharos
Pryce - Ice - Piloswine
Claire - Dragon - Kingdra

Koga replaced by Janine
Giovanni replaced by Blue

Wil - Psychic - Xatu
Koga - Poison - Crobat
Bruno - Fighting - Machamp
Karen - Dark - Houndoom
Lance - Dragon - Dragonite

Red - Mixed - Pikachu

Baby Pokemon:
Pichu -> Pikachu
Igglybuff -> Jigglypuff
Cleffa -> Clefairy
Elekid -> Electabuzz
Magby -> Magmar
Smoochum > Jynx
Tyrogue -> Hitmonchan/Hitmonlee/Hitmontop*

New Evolutions:
Golbat -> Crobat
Gloom -> Bellossom (Sun Stone)
Scyther -> Scizor (Metal Coat)
Onix -> Steelix (Metal Coat)
Poliwhirl -> Politoed (King's Rock)
Slowpoke -> Slowking (King's Rock)
Eevee -> Umbreon (Night)
Eevee -> Espeon (Day)
Seadra -> Kingdra (Dragonscale)
Porygon -> Porygon2 (Upgrade)
Chansey -> Blissey

New Typings:
Magnemite & Magneton -> Electic/Steel

Pseudo:
Tyranitar

Legendaries:
Raikou
Entei
Suicune
Lugia
Ho-Oh

Mythical:
Celebi