Pokémon
|
Versions Available
|
Lowest Level
|
Where to Obtain
|
Available as rental?
|
|
Bulbasaur
|
RBY
|
15
|
First partner PokémonRB; Cerulean CityY
|
Yes
|
|
Ivysaur
|
RBY
|
16
|
Evolve Bulbasaur
|
Yes[a]
|
|
Charmander
|
RBY
|
15
|
First partner PokémonRB; Route 24Y
|
Yes
|
|
Charmeleon
|
RBY
|
16
|
Evolve Charmander
|
Yes[a]
|
|
Squirtle
|
RBY
|
15
|
First partner PokémonRB; Vermilion CityY
|
Yes
|
|
Wartortle
|
RBY
|
16
|
Evolve Squirtle
|
Yes[a]
|
|
Caterpie
|
RBY
|
15
|
Viridian Forest
|
Yes
|
|
Metapod
|
RBY
|
15
|
Viridian Forest; evolve Caterpie
|
Yes
|
|
Butterfree
|
RBY
|
15
|
Evolve Metapod
|
Yes
|
|
Weedle
|
RB
|
15
|
Viridian Forest
|
Yes
|
|
Kakuna
|
RB
|
15
|
Viridian Forest; evolve Weedle
|
Yes
|
|
Beedrill
|
RB
|
15
|
Evolve Kakuna
|
Yes
|
|
Pidgey
|
RBY
|
15
|
Route 1
|
Yes
|
|
Pidgeotto
|
RBY
|
15Y, 18RB
|
Viridian ForestY; evolve Pidgey
|
Yes
|
|
Rattata
|
RBY
|
15
|
Route 1
|
Yes
|
|
Raticate
|
RBY
|
15Y, 20RB
|
Route 21Y; evolve Rattata
|
Yes
|
|
Spearow
|
RBY
|
15
|
Route 22
|
Yes
|
|
Fearow
|
RBY
|
19Y, 20RB
|
Route 9Y; evolve Spearow
|
Yes[b]
|
|
Ekans
|
R
|
15
|
Route 4
|
Yes
|
|
Pikachu
|
RBY
|
15
|
Viridian ForestRB; first partner PokémonY
|
Yes
|
|
Raichu
|
RB
|
15
|
Evolve Pikachu
|
Yes
|
|
Sandshrew
|
BY
|
15
|
Route 4
|
Yes
|
|
Nidoran♀
|
RBY
|
15
|
Route 22
|
Yes
|
|
Nidorina
|
RBY
|
16
|
Evolve Nidoran♀
|
Yes[a]
|
|
Nidoqueen
|
RBY
|
16
|
Evolve Nidorina
|
Yes[a]
|
|
Nidoran♂
|
RBY
|
15
|
Route 22
|
Yes
|
|
Nidorino
|
RBY
|
16
|
Evolve Nidoran♂
|
Yes[a]
|
|
Nidoking
|
RBY
|
16
|
Evolve Nidorino
|
Yes[a]
|
|
Clefairy
|
RBY
|
15
|
Mt. Moon
|
Yes
|
|
Clefable
|
RBY
|
15
|
Evolve Clefairy
|
Yes
|
|
Vulpix
|
BY
|
15B, 18Y
|
Route 8B; Rocket Game CornerY
|
Yes
|
|
Ninetales
|
BY
|
15B, 18Y
|
Evolve Vulpix
|
Yes
|
|
Jigglypuff
|
RBY
|
15
|
Route 3RB; Route 5Y
|
Yes
|
|
Wigglytuff
|
RBY
|
15
|
Evolve Jigglypuff
|
Yes
|
|
Zubat
|
RBY
|
15
|
Mt. Moon
|
Yes
|
|
Oddish
|
RY
|
15
|
Route 24
|
Yes
|
|
Paras
|
RBY
|
15
|
Mt. Moon
|
Yes
|
|
Parasect
|
RB[c]
|
15
|
Catch a low level VenonatY, then trade it for Tangela at the Cinnabar Island labRB. Trade Tangela for Parasect at Route 18Y.
|
No
|
|
Venonat
|
Y
|
15
|
Route 24
|
Yes
|
|
Diglett
|
RBY
|
15
|
Diglett's Cave
|
Yes
|
|
Dugtrio
|
Y[d]
|
15
|
Catch a low level SlowbroY, then trade it for Lickitung at the Route 17 gateRB. Trade Lickitung for Dugtrio at Route 11Y.
|
No
|
|
Meowth
|
B
|
15
|
Route 5
|
Yes
|
|
Psyduck
|
RBY
|
15
|
Kanto Safari ZoneRB; Route 6Y
|
Yes
|
|
Golduck
|
Y
|
15
|
Route 6
|
No
|
|
Mankey
|
RY
|
15
|
Route 5R; Route 22Y
|
Yes
|
|
Growlithe
|
R
|
15
|
Route 8
|
Yes
|
|
Arcanine
|
R
|
15
|
Evolve Growlithe
|
Yes
|
|
Poliwag
|
RBY
|
15
|
Fish anywhere with the Good Rod
|
Yes
|
|
Poliwhirl
|
Y
|
15
|
Fish on Route 22
|
Yes
|
|
Poliwrath
|
Y
|
15
|
Evolve Poliwhirl
|
Yes
|
|
Abra
|
RBY
|
15
|
Route 24RB; Route 5Y
|
Yes
|
|
Kadabra
|
RBY
|
16
|
Evolve Abra
|
Yes[b]
|
|
Alakazam
|
RBY
|
16
|
Evolve Kadabra
|
Yes[b]
|
|
Machop
|
RBY
|
15RB, 16Y
|
Rock TunnelRB; Route 10Y
|
Yes
|
|
Machamp
|
Y
|
16
|
Catch a level 16 Cubone in the Kanto Safari ZoneY, then trade for a Machoke on Route 5.
|
No
|
|
Bellsprout
|
BY
|
15
|
Route 24
|
Yes
|
|
Tentacool
|
RBY
|
15
|
Route 21
|
Yes
|
|
Tentacruel
|
Y
|
20
|
Fish on Route 20
|
Yes[a]
|
|
Geodude
|
RBY
|
15
|
Mt. Moon
|
Yes
|
|
Golem
|
Bᴶ
|
16
|
In the Japanese Blue, trade a Kadabra for a Graveler at the Cinnabar Island lab. An eligible Golem cannot be obtained in the international Generation I games.
|
No
|
|
Slowpoke
|
RBY
|
15
|
Fish at the Kanto Safari Zone with the Super RodRB; surf on Route 12Y
|
Yes
|
|
Slowbro
|
Y
|
15
|
Surf on Route 12
|
No
|
|
Magnemite
|
Y
|
16
|
Route 10
|
Yes[b]
|
|
Farfetch'd
|
RB
|
15
|
Trade a low level Spearow in Vermilion City.
|
Yes
|
|
Doduo
|
RB
|
18
|
Route 16
|
No
|
|
Dewgong
|
Y[e]
|
15
|
Catch a low level GrowlitheR, then trade it for Dewgong at the Cinnabar Island labY. Breeding a Growlithe in Generation II and trading it to Yellow is an alternative method.
|
No
|
|
Muk
|
Bᴶ[c]
|
15
|
Catch a low level Golduck, then trade it for Rhydon at the Cinnabar Island labY. Trade the Rhydon for a Kangaskhan at the Cinnabar Island lab in the Japanese Blue, then trade the Kangaskhan for a Muk in the Cinnabar Island labY. A low level Kangaskhan and Muk can only be obtained in international versions through trading with Generation II.
|
No
|
|
Shellder
|
RBY
|
15
|
Fish in Vermilion City
|
Yes
|
|
Cloyster
|
RBY
|
15
|
Evolve Shellder
|
Yes
|
|
Gastly
|
RBY
|
18
|
Pokémon Tower
|
Yes[b]
|
|
Haunter
|
Y
|
20
|
Pokémon Tower
|
Yes[b]
|
|
Gengar
|
Y
|
20
|
Evolve Haunter
|
Yes[b]
|
|
Onix
|
RBY
|
15
|
Rock Tunnel
|
Yes
|
|
Drowzee
|
RBY
|
15
|
Route 11
|
Yes
|
|
Krabby
|
RBY
|
15
|
Fish at Route 25
|
Yes
|
|
Kingler
|
Y
|
15
|
Fish at Route 25
|
Yes
|
|
Voltorb
|
RB
|
15
|
Route 10
|
Yes
|
|
Electrode
|
RB
|
15
|
Trade a low level Raichu for an Electrode at the Cinnabar Island lab.
|
No
|
|
Exeggcute
|
Y
|
20
|
Kanto Safari Zone
|
Yes[b]
|
|
Exeggutor
|
Y
|
20
|
Evolve Exeggcute
|
Yes[b]
|
|
Cubone
|
Y
|
16
|
Kanto Safari Zone
|
Yes[b]
|
|
Hitmonlee
|
Stad
|
20
|
Possible reward for clearing the Gym Leader Castle
|
No
|
|
Hitmonchan
|
Stad
|
20
|
Possible reward for clearing the Gym Leader Castle
|
No
|
|
Lickitung
|
RB[c]
|
15
|
Catch a low level SlowbroY, then trade it for a Lickitung at Route 17RB.
|
Yes
|
|
Rhyhorn
|
Y
|
20
|
Kanto Safari Zone
|
Yes[b]
|
|
Rhydon
|
Y
|
15
|
Catch a low level Golduck, then trade it for Rhydon at the Cinnabar Island labY.
|
No
|
|
Chansey
|
Y
|
15
|
Kanto Safari Zone
|
Yes
|
|
Tangela
|
RB[c]
|
15
|
Catch a low level VenonatY, then trade it for a Tangela at the Cinnabar Island labRB.
|
No
|
|
Kangaskhan
|
Bᴶ[c]
|
15
|
Catch a low level Golduck, then trade it for a Rhydon at the Cinnabar Island labY. In the Japanese Blue, trade the Rhydon for a Kangaskhan at the Cinnabar Island lab. International versions require trading a Kangaskhan over from Generation II.
|
No
|
|
Horsea
|
RBY
|
15
|
Fish at Route 11
|
Yes
|
|
Seadra
|
Y
|
20
|
Fish at Route 13
|
Yes[a]
|
|
Goldeen
|
RBY
|
15
|
Fish anywhere with the Good Rod
|
Yes
|
|
Staryu
|
RBY
|
15
|
Fish at Route 19
|
Yes
|
|
Starmie
|
RBY
|
15
|
Evolve Staryu
|
Yes
|
|
Mr. Mime
|
RBY
|
15
|
Trade a low level AbraRB or ClefairyY at Route 2.
|
Yes
|
|
Scyther
|
Y
|
15
|
Kanto Safari Zone
|
Yes
|
|
Jynx
|
RB[c]
|
15
|
Catch a low level PoliwhirlY, then trade for a Jynx in Cerulean CityRB.
|
No
|
|
Pinsir
|
Y
|
15
|
Kanto Safari Zone
|
Yes
|
|
Magikarp
|
RBY
|
15
|
Fish anywhere with the Old Rod
|
Yes
|
|
Gyarados
|
RBY
|
15Y, 20RB
|
Fish at Fuchsia CityY; evolve Magikarp
|
Yes
|
|
Lapras
|
RBY
|
15
|
Silph Co. employee
|
Yes
|
|
Ditto
|
Y
|
15
|
Pokémon Mansion
|
Yes
|
|
Porygon
|
B
|
18
|
Rocket Game Corner
|
Yes[b]
|
|
Omanyte
|
Stad
|
20
|
Possible reward for clearing the Gym Leader Castle
|
No
|
|
Kabuto
|
Stad
|
20
|
Possible reward for clearing the Gym Leader Castle
|
No
|
|
Dratini
|
RBY
|
15
|
Fish at the Kanto Safari Zone
|
Yes
|
|
Dragonair
|
Y
|
15
|
Fish at the Kanto Safari Zone
|
No
|