Pokémon Gen I Gym Leaders
Kanto Gym order, badges, type specialties, and version-aware notes.
The Gym badge flow is largely shared across the Gen I versions, with Yellow changing some trainer and team details.
| Order | Gym Leader | City | Type | Badge | Key Pokémon | Recommended Counters | Strategy |
|---|---|---|---|---|---|---|---|
| #1 | Brock | Pewter City | Rock | Boulder Badge | Grass and Water moves are the cleanest answers. Charmander teams should lean on status, special damage, or trained support Pokémon. | ||
| #2 | Misty | Cerulean City | Water | Cascade Badge | Grass and Electric attacks help manage Starmie. Avoid relying only on underleveled Fire or Rock Pokémon. | ||
| #3 | Lt. Surge | Vermilion City | Electric | Thunder Badge | Ground-type Pokémon are the safest counter because Electric attacks do not affect them in Generation I. | ||
| #4 | Erika | Celadon City | Grass | Rainbow Badge | Flying, Fire, and Psychic pressure are strong. Bring status healing because Grass teams can disrupt with sleep or poison. | ||
| #5 | Koga | Fuchsia City | Poison | Soul Badge | Psychic and Ground attacks are reliable answers. Keep Antidotes or Full Heals ready for poison. | ||
| #6 | Sabrina | Saffron City | Psychic | Marsh Badge | Psychic is extremely strong in Generation I. Use sturdy physical attackers and avoid slow Poison-type Pokémon. | ||
| #7 | Blaine | Cinnabar Island | Fire | Volcano Badge | Water, Rock, and Ground attacks handle most of the Gym. Watch for strong late-game Fire damage from Arcanine. | ||
| #8 | Giovanni | Viridian City | Ground | Earth Badge | Water and Grass attacks are excellent into most of Giovanni's team. Keep fragile Electric Pokémon away from Ground attacks. |
More Gen I Guide Sections
Shared Walkthrough
Follow Kanto from Pallet Town to Champion with version notes.
Version Differences
Compare release history, starters, encounters, and presentation.
Exclusive Pokémon
Check version availability and trade-planning targets.
Pokémon Green Differences
Understand Japan-only Green without confusing it with Blue.
Yellow Differences
Pikachu starter, gift starters, encounter, and trainer changes.
TM & HM Locations
Find Cut, Fly, Surf, Strength, Flash, and key battle TMs.
Legendary Pokémon
Plan Articuno, Zapdos, Moltres, Mewtwo, and event-only Mew.
Elite Four
Prepare for Lorelei, Bruno, Agatha, Lance, and Champion.
NationalDex.io is an independent fan-made Pokédex and game guide. Pokémon and related names are trademarks of their respective owners.