How to Defeat Every Gym Leader in Pokémon: Let’s Go, Eevee!

Defeating all Gym Leaders in Pokémon: Let’s Go, Eevee! requires understanding their types, move sets, and weaknesses. Here’s how to beat each one effectively.
🌿 Pewter City Gym – Brock (Rock Type)
Requirement: Show a Grass- or Water-type Pokémon.
Recommended Pokémon: Bulbasaur (Viridian Forest), Oddish (Route 1 & 2), or Squirtle (later in Cerulean City).
Pokémon | Level | Type | Weaknesses |
---|---|---|---|
Geodude | 11 | Rock/Ground | Water, Grass, Fighting, Ground, Steel |
Onix | 12 | Rock/Ground | Water, Grass, Fighting, Ground, Steel |
🛠 Strategy:
- Grass (Vine Whip) or Water (Bubble/Water Gun) moves are super effective.
- If using Eevee, use Double Kick (Fighting-type) for extra damage.
💧 Cerulean City Gym – Misty (Water Type)
Requirement: Have a Pokémon at Level 15+.
Recommended Pokémon: Pikachu (Viridian Forest), Bellsprout/Oddish (Routes 24-25).
Pokémon | Level | Type | Weaknesses |
---|---|---|---|
Psyduck | 18 | Water | Electric, Grass |
Starmie | 19 | Water/Psychic | Electric, Grass, Bug, Ghost, Dark |
🛠 Strategy:
- Pikachu’s Thunder Shock or Bellsprout’s Vine Whip will take down Misty fast.
- Be wary of Starmie’s Confusion. Use status moves like Sleep Powder (Bellsprout) to stall.
⚡ Vermilion City Gym – Lt. Surge (Electric Type)
Requirement: Show a Pokémon caught outside Kanto (trade Pokémon).
Recommended Pokémon: Diglett/Dugtrio (Diglett’s Cave), Geodude (Mt. Moon).
Pokémon | Level | Type | Weaknesses |
---|---|---|---|
Voltorb | 25 | Electric | Ground |
Magnemite | 25 | Electric/Steel | Ground, Fire, Fighting |
Raichu | 26 | Electric | Ground |
🛠 Strategy:
- Diglett/Dugtrio can sweep this Gym with Dig (super effective against Electric).
- Avoid using Flying- or Water-types here.
🌿 Celadon City Gym – Erika (Grass Type)
Requirement: Show a “cute” Pokémon (like Eevee or Pikachu).
Recommended Pokémon: Vulpix (Let’s Go, Eevee! – Route 7), Growlithe (Let’s Go, Pikachu! – Route 7), or Butterfree (Route 2).
Pokémon | Level | Type | Weaknesses |
---|---|---|---|
Tangela | 33 | Grass | Fire, Flying, Bug, Ice, Poison |
Weepinbell | 33 | Grass/Poison | Fire, Flying, Psychic, Ice |
Vileplume | 34 | Grass/Poison | Fire, Flying, Psychic, Ice |
🛠 Strategy:
- Fire-types (Vulpix, Growlithe) with Ember/Flamethrower work well.
- Flying moves (Wing Attack from Pidgeotto) or Psychic (Kadabra) also work.
☠️ Fuchsia City Gym – Koga (Poison Type)
Requirement: Have a Pokémon at Level 45+.
Recommended Pokémon: Kadabra (Psychic-type), Ground-types like Dugtrio.
Pokémon | Level | Type | Weaknesses |
---|---|---|---|
Weezing | 43 | Poison | Psychic, Ground |
Muk | 43 | Poison | Psychic, Ground |
Golbat | 43 | Poison/Flying | Electric, Ice, Psychic, Rock |
Venomoth | 44 | Bug/Poison | Fire, Flying, Psychic, Rock |
🛠 Strategy:
- Kadabra with Psychic moves can one-shot most of Koga’s team.
- Dugtrio’s Earthquake/Dig is also very effective.
- Bring Full Heals for Poison status effects.
🔮 Saffron City Gym – Sabrina (Psychic Type)
Requirement: Have a Pokémon at Level 45+.
Recommended Pokémon: Dark-type moves (Crunch from Arcanine), Bug-types (Beedrill), or Ghost-types (Haunter).
Pokémon | Level | Type | Weaknesses |
---|---|---|---|
Mr. Mime | 43 | Psychic/Fairy | Ghost, Poison, Steel |
Slowbro | 43 | Water/Psychic | Electric, Grass, Bug, Dark, Ghost |
Jynx | 43 | Ice/Psychic | Fire, Bug, Rock, Dark, Ghost |
Alakazam | 44 | Psychic | Bug, Dark, Ghost |
🛠 Strategy:
- Use Dark-type moves like Crunch (Arcanine) or Bug-type moves (X-Scissor from Beedrill).
- Avoid Fighting-types, as they are weak to Psychic.
🔥 Cinnabar Island Gym – Blaine (Fire Type)
Requirement: Answer Blaine’s quiz questions.
Recommended Pokémon: Water-types (Lapras, Blastoise), Rock-types (Onix, Rhyhorn).
Pokémon | Level | Type | Weaknesses |
---|---|---|---|
Magmar | 47 | Fire | Water, Ground, Rock |
Rapidash | 47 | Fire | Water, Ground, Rock |
Ninetales | 47 | Fire | Water, Ground, Rock |
Arcanine | 48 | Fire | Water, Ground, Rock |
🛠 Strategy:
- Water-types like Lapras and Blastoise work best.
- Dugtrio’s Dig or Rhydon’s Earthquake are also strong against Fire-types.
🏜 Viridian City Gym – Giovanni (Ground Type)
Requirement: None (final Gym).
Recommended Pokémon: Water-types (Blastoise, Lapras), Grass-types (Venusaur).
Pokémon | Level | Type | Weaknesses |
---|---|---|---|
Dugtrio | 49 | Ground | Water, Grass, Ice |
Nidoqueen | 49 | Poison/Ground | Water, Ground, Psychic, Ice |
Nidoking | 49 | Poison/Ground | Water, Ground, Psychic, Ice |
Rhydon | 50 | Ground/Rock | Water, Grass, Ice, Fighting, Steel |
🛠 Strategy:
- Blastoise or Lapras with Surf can sweep Giovanni’s team.
- Grass-types like Venusaur also work well against Rhydon and Dugtrio.
Final Notes:
✅ Use type advantages to dominate each Gym.
✅ Train Pokémon to match or exceed Gym Leader levels.
✅ Use healing items (Potions, Antidotes) during fights.
Once you beat all 8 Gym Leaders, you’re ready for the Elite Four! 🎉