Yellow Gym leaders & Elite Four

Pokémon Yellow follows the gameplay in Red/Blue, where you battle your way through 8 gyms, each specializing in a particular type. Following that you take on the Elite Four and the Champion. Most of the gyms have small changes to their line-up, but the Elite Four are the same.

The team of the Champion (aka Gary or Blue) varies depending on which Pokémon his Eevee evolved into. He has a Jolteon if you win your first two battles; a Vaporeon if you lose the first two battles; or a Flareon if you win one and lose one.

Gym #1, Pewter City

Brock
Brock
Boulder Badge
Rock type Pokémon
Geodude
#074
Geodude
Level 10
Rock · Ground
Onix
#095
Onix
Level 12
Rock · Ground

Gym #2, Cerulean City

Misty
Misty
Cascade Badge
Water type Pokémon
Staryu
#120
Staryu
Level 18
Water
Starmie
#121
Starmie
Level 21
Water · Psychic

Gym #3, Vermilion City

Lt. Surge
Lt. Surge
Thunder Badge
Electric type Pokémon
Raichu
#026
Raichu
Level 28
Electric

Gym #4, Celadon City

Erika
Erika
Rainbow Badge
Grass type Pokémon
Tangela
#114
Tangela
Level 30
Grass
Weepinbell
#070
Weepinbell
Level 32
Grass · Poison
Gloom
#044
Gloom
Level 32
Grass · Poison

Gym #5, Fuchsia City

Koga
Koga
Soul Badge
Poison type Pokémon
Venonat
#048
Venonat
Level 44
Bug · Poison
Venonat
#048
Venonat
Level 46
Bug · Poison
Venonat
#048
Venonat
Level 48
Bug · Poison
Venomoth
#049
Venomoth
Level 50
Bug · Poison

Gym #6, Saffron City

Sabrina
Sabrina
Marsh Badge
Psychic type Pokémon
Abra
#063
Abra
Level 50
Psychic
Kadabra
#064
Kadabra
Level 50
Psychic
Alakazam
#065
Alakazam
Level 50
Psychic

Gym #7, Cinnabar Island

Blaine
Blaine
Volcano Badge
Fire type Pokémon
Ninetales
#038
Ninetales
Level 48
Fire
Rapidash
#078
Rapidash
Level 50
Fire
Arcanine
#059
Arcanine
Level 54
Fire

Gym #8, Viridian City

Giovanni
Giovanni
Earth Badge
Ground type Pokémon
Dugtrio
#051
Dugtrio
Level 50
Ground
Persian
#053
Persian
Level 53
Normal
Nidoqueen
#031
Nidoqueen
Level 53
Poison · Ground
Nidoking
#034
Nidoking
Level 55
Poison · Ground
Rhydon
#112
Rhydon
Level 55
Ground · Rock

Elite Four #1

Lorelei
Lorelei
Ice type Pokémon
Dewgong
#087
Dewgong
Level 54
Water · Ice
Cloyster
#091
Cloyster
Level 53
Water · Ice
Slowbro
#080
Slowbro
Level 54
Water · Psychic
Jynx
#124
Jynx
Level 56
Ice · Psychic
Lapras
#131
Lapras
Level 56
Water · Ice

Elite Four #2

Bruno
Bruno
Fighting type Pokémon
Onix
#095
Onix
Level 53
Rock · Ground
Hitmonchan
#107
Hitmonchan
Level 55
Fighting
Hitmonlee
#106
Hitmonlee
Level 55
Fighting
Onix
#095
Onix
Level 56
Rock · Ground
Machamp
#068
Machamp
Level 58
Fighting

Elite Four #3

Agatha
Agatha
Ghost type Pokémon
Gengar
#094
Gengar
Level 56
Ghost · Poison
Golbat
#042
Golbat
Level 56
Poison · Flying
Haunter
#093
Haunter
Level 55
Ghost · Poison
Arbok
#024
Arbok
Level 58
Poison
Gengar
#094
Gengar
Level 60
Ghost · Poison

Elite Four #4

Lance
Lance
Dragon type Pokémon
Gyarados
#130
Gyarados
Level 58
Water · Flying
Dragonair
#148
Dragonair
Level 56
Dragon
Dragonair
#148
Dragonair
Level 56
Dragon
Aerodactyl
#142
Aerodactyl
Level 60
Rock · Flying
Dragonite
#149
Dragonite
Level 62
Dragon · Flying

Champion

Blue
Blue
(Eevee → Vaporeon)
Mixed types
Sandslash
#028
Sandslash
Level 61
Ground
Alakazam
#065
Alakazam
Level 59
Psychic
Exeggutor
#103
Exeggutor
Level 61
Grass · Psychic
Ninetales
#038
Ninetales
Level 61
Fire
Magneton
#082
Magneton
Level 63
Electric · Steel
Vaporeon
#134
Vaporeon
Level 65
Water
Blue
Blue
(Eevee → Jolteon)
Mixed types
Sandslash
#028
Sandslash
Level 61
Ground
Alakazam
#065
Alakazam
Level 59
Psychic
Exeggutor
#103
Exeggutor
Level 61
Grass · Psychic
Cloyster
#091
Cloyster
Level 61
Water · Ice
Ninetales
#038
Ninetales
Level 63
Fire
Jolteon
#135
Jolteon
Level 65
Electric
Blue
Blue
(Eevee → Flareon)
Mixed types
Sandslash
#028
Sandslash
Level 61
Ground
Alakazam
#065
Alakazam
Level 59
Psychic
Exeggutor
#103
Exeggutor
Level 61
Grass · Psychic
Magneton
#082
Magneton
Level 61
Electric · Steel
Cloyster
#091
Cloyster
Level 63
Water · Ice
Flareon
#136
Flareon
Level 65
Fire