Kanto’s Gym Leaders

Throughout the course of Pokémon Red, Blue, Green and Yellow, you’ll need to defeat a total of eight Gym Leaders and earn their badges so that you can challenge the Elite 4 and become the region’s new Pokémon Champion.

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Gym Leader Brock (Boulder Badge)

Brock is the Gym Leader of Pewter City’s Pokémon Gym. He is the first gym leader you will battle who specializes in rock-type Pokémon. Defeat him and he’ll give you TM34 (Bide).

Brock’s team

  • Geodude (Level 12 R/B/G or 10 Y)
  • Onix (Level 14 R/B/G or 12 Y)

We recommend using Water-, Fighting- or Grass-type Pokémon such as the starters Squirtle and Bulbasaur, or Mankey (Yellow only), Butterfree or over-leveled Charmander to take advantage of his team’s low special stat.

Gym Leader Misty (Cascade Badge)

Misty is the Gym Leader of Cerulean City’s Pokémon Gym. She is the second Gym Leader you will battle and specializes in Water-type Pokémon. Defeat her and she’ll give you TM11 (BubbleBeam).

Misty’s team

  • Staryu (Level 18 RBGY)
  • Starmie (Level 21 RBGY)

We recommend using an Electric- or Grass-type Pokémon such as Pikachu, Bulbasaur, Gloom or Weepinbell, Parasect or Golbat.

Gym Leader Lt. Surge (Thunder Badge)

Lt. Surge is the Gym Leader of Vermillion City’s Pokémon Gym. He is the third Gym Leader you will battle and specializes in Electric-type Pokémon. Defeat him and he’ll give you TM34 (Thunderbolt).

Lt. Surge’s team

  • Pokémon Red, Blue and Green
    • Voltorb (Level 21)
    • Pikachu (Level 18)
    • Raichu (Level 24)
  • Pokémon Yellow
    • Raichu (Level 28)

We recommend using a Ground-type such as Geodude, Graveler and/or Onix to secure your win.

Gym Leader Erika (Rainbow Badge)

Erika is the Gym Leader of Celadon City’s Pokémon Gym. She is the fourth gym leader you will battle who specializes in Grass-type Pokémon. Defeat her and she’ll give you TM21 (Mega Drain).

Erika’s team

  • Pokémon Red, Blue and Green
    • Victreebel (Level 29)
    • Tangela (Level 24)
    • Vileplume (Level 29)
  • Pokémon Yellow
    • Tangela (Level 30)
    • Weepinbell (Level 32)
    • Gloom (Level 32)

We recommend using Fire- and/or Flying-type Pokémon such as Golbat, Flareon, Arcanine, Ninetales or Hypno.

Gym Leader Koga (Soul Badge)

Koga is the Gym Leader of Fuschia City’s Pokémon Gym. He is the fifth gym leader and specializes in Poison-type Pokémon. Defeat him and he’ll give you TM06 (Toxic).

Koga’s team

  • Pokémon Red, Blue and Green
    • Koffing (Level 37)
    • Muk (Level 39)
    • Koffing (Level 37)
    • Weezing (Level 43)
  • Pokémon Yellow
    • Venonat (Level 44)
    • Venonat (Level 46)
    • Venonat (Level 48)
    • Venomoth (Level 50)

We recommend using a Ground-type Pokémon, such as Graveler or Onix, or a Psychic-type like Hypno. Flying-types like Fearow or Pidgeot can be useful in Yellow.

Gym Leader Sabrina (Marsh Badge)

Sabrina is the Gym Leader of Saffron City’s Pokémon Gym. She is the sixth Gym Leader you will face and specializes in Psychic-type Pokémon. Defeat her and she’ll give you TM46 (Psywave).

Sabrina’s team

  • Pokémon Red, Blue and Green
    • Kadabra (Level 38)
    • Mr. Mime (Level 37)
    • Venomoth (Level 38)
    • Alakazam (Level 43)
  • Pokémon Yellow
    • Abra (Level 50)
    • Kadabra (Level 50)
    • Alakazam (Level 50)

We recommend using a bulky Pokémon with good attack or special stat. Some examples are Slowbro, Lapras, Clefable or Gyarados.

Gym Leader Blaine (Volcano Badge)

Blaine is the Gym Leader of Cinnabar Island’s Pokémon Gym. He is the seventh Gym Leader and specializes in Fire-type Pokémon. Defeat him and he’ll give you TM38 (Fire blast).

Blaine’s team

  • Pokémon Red, Blue and Green
    • Growlithe (Level 42)
    • Ponyta (Level 40)
    • Rapidash (Level 42)
    • Arcanine (Level 47)
  • Pokémon Yellow
    • Ninetales (Level 48)
    • Rapidash (Level 50)
    • Arcanine (Level 54)

We recommend using Water- or Ground-type Pokémon that are similarly leveled to his.

Gym Leader Giovanni (Earth Badge)

Giovanni is the Gym Leader of Viridian City’s Pokémon Gym. He is the eighth and final Gym Leader players will face and specializes in Ground-type Pokémon. Defeat him and he’ll give you TM27 (Fissure).

Giovanni’s team

  • Pokémon Red, Blue and Green
    • Rhyhorn (Level 45)
    • Dugtrio (Level 42)
    • Nidoqueen (Level 44)
    • Nidoking (Level 45)
    • Rhydon (Level 50)
  • Pokémon Yellow
    • Dugtrio (Level 50)
    • Persian (Level 53)
    • Nidoqueen (Level 53)
    • Nidoking (Level 55)
    • Rhydon (Level 55)

We recommend using strong Water- and Grass-type Pokémon or any strong special attackers that can take advantage of Giovanni’s lack of special defense (special stat is both attack and defense in Generation I).