Pewter City

Brock
The Rock-Solid Pokémon Trainer!
Rock type
Boulder Badge

Cerulean City

Misty
The Tomboyish Mermaid!
Water type
Cascade Badge

Vermilion City

Lt. Surge
The Lightning Lieutenant!
Electric type
Thunder Badge

Celadon City

Erika
The Nature-Loving Princess!
Grass type
Rainbow Badge

Fuchsia City

Koga
The Poisonous Ninja Master
Poison type
Soul Badge

Saffron City

Sabrina
The Poisonous Ninja Master
Psychic type
Marsh Badge

Cinnabar Island

Blaine
The Hotheaded Quiz Master!
Fire type
Volcano Badge

Blackthorn City

Giovanni
The Self-Proclaimed Strongest Trainer
Dark type
Earth Badge

Lorelei
Ice type

Bruno
Fighting type

Agatha
Ghost type