“ | Fwahahaha! A mere child like you dares to challenge me? That very idea makes me shiver with mirth! Very well, I shall show you true terror as a ninja master! Opponents can't lay a hand on me, as poison brings their steady doom. Despair as you feel the creeping horror of Poison-type Pokémon! | ” |
Koga served as the Gym Leader at the Fuchsia City Gym. Two years later, during the Generation II games, Koga also became a member of the Elite Four and his daughter, Janine took over his gym and used Poison-type Pokémon as well.
He specializes in Poison-type Pokémon, and as a Gym Leader gave out the Soul Badge for Trainers that could defeat him.
Appearance
Koga is a man with black spiky hair. He usually wears dark ninja outfits, along with a red scarf.
Red, Green and Blue
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Yellow
Koga's appearance remains the same as it is in Red, Green and Blue.
Gold and Silver
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Crystal
Koga's appearance remains the same as it is in Gold and Silver.
FireRed and LeafGreen
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HeartGold and SoulSilver
Koga's outfit has purple outlines. He also wears protective grey bracers on his legs, as well as bands on his wrists.
Let's Go, Pikachu! and Let's Go, Eevee!
Koga has black, spikey hair and bushy eyebrows. He is always wearing a red scarf over his mouth and nose. He has a purple ninja-style outfit, with black finger gloves and boots. He has a white belt around his waist.
Personality
Koga shows himself as an intimidating foe, using Poison-type Pokémon, whose moves poison or lull the opponent to sleep.
Etymology
The name Koga originates from Kōga-ryū, a school of ninjutsu that focused on, among other techniques, poisoning.
His Japanese name, Kyō, may originate from 凶 (kyō, misfortune), 戮 (kyō, kill), or 杏 (kyō, apricot, as apricot seeds are poisonous).
Biography
Games
Red, Green and Blue
Koga first appears in the games as the Fuchsia City Gym Leader. His gym was constructed with an array of invisible walls, fashioned into a maze. This forces the player to walk through the maze fighting Gym members, with the destination in the middle where Koga awaits.
Yellow
His role in Yellow is the same as it is in Red, Green and Blue.
Gold and Silver
Later, in the Generation II games, Koga has been promoted to Elite Four status. With the absence of a Gym Leader at Fuchsia Gym, Koga leaves the Gym under his daughter's care, Janine, making her the new Gym Leader.
Crystal
His role in Crystal is the same as it is in Gold and Silver.
FireRed and LeafGreen
In the remakes of the original games, Pokémon FireRed and LeafGreen, Koga is once again a Gym Leader, as it takes place during the same time period. The only difference is the level of his Weezing, and his updated appearance.
HeartGold and SoulSilver
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Other appearances
Sprites
Pokémon
Red and Blue
![]() Koffing ![]() |
![]() Koffing ![]() |
![]() Muk ![]() |
![]() Weezing ![]() |
||||||||
Lv. 37 | - | Lv. 37 | - | Lv. 39 | - | Lv. 43 | - | ||||
Ability: | Ability: | Ability: | Ability: | ||||||||
Item: | Item: | Item: | Item: | ||||||||
Tackle | SmokeScreen | Disable | Sludge | ||||||||
Smog | Sludge | Poison Gas | Smog | ||||||||
Sludge | Smog | Minimize | Toxic | ||||||||
SmokeScreen | Tackle | Sludge | Self-Destruct |
Yellow
![]() Venonat ![]() ![]() |
![]() Venonat ![]() ![]() |
![]() Venonat ![]() ![]() |
![]() Venomoth ![]() ![]() |
||||||||
Lv. 44 | - | Lv. 46 | - | Lv. 48 | - | Lv. 50 | - | ||||
Ability: | Ability: | Ability: | Ability: | ||||||||
Item: | Item: | Item: | Item: | ||||||||
Toxic | Psybeam | Sleep Powder | Psychic | ||||||||
Tackle | Toxic | Psychic | Double Team | ||||||||
Sleep Powder | Psychic | Toxic | Leech Life | ||||||||
Psychic | Supersonic | Double-Edge | Toxic |
Gold, Silver & Crystal
![]() Ariados ![]() ![]() |
![]() Forretress ![]() ![]() |
![]() Muk ![]() |
![]() Venomoth ![]() ![]() |
![]() Crobat ![]() ![]() |
|||||||
Lv. 40 | ♂ | Lv. 43 | ♂ | Lv. 42 | ♂ | Lv. 41 | ♂ | Lv. 44 | ♂ | ||
Ability: | Ability: | Ability: | Ability: | Ability: | |||||||
Item: None | Item: None | Item: None | Item: None | Item: None | |||||||
Spider Web | Protect | Sludge Bomb | Toxic | Double Team | |||||||
Double Team | Spikes | Acid Armor | Psychic | Wing Attack | |||||||
Baton Pass | Swift | Minimize | Gust | Quick Attack | |||||||
Giga Drain | Explosion | Toxic | Supersonic | Toxic |
FireRed and LeafGreen
![]() Koffing ![]() |
![]() Koffing ![]() |
![]() Muk ![]() |
![]() Weezing ![]() |
||||||||
Lv. 37 | ♂ | Lv. 37 | ♂ | Lv. 39 | ♂ | Lv. 43 | ♂ | ||||
Ability: Levitate | Ability: Levitate | Ability: Sticky Hold | Ability: Levitate | ||||||||
Item: None | Item: None | Item: None | Item: None | ||||||||
Sludge | Self-Destruct | Minimize | Toxic | ||||||||
Self-Destruct | Sludge | Toxic | SmokeScreen | ||||||||
SmokeScreen | Toxic | Sludge | Tackle | ||||||||
Toxic | SmokeScreen | Acid Armor | Sludge |
HeartGold and SoulSilver
![]() Ariados ![]() ![]() |
![]() Forretress ![]() ![]() |
![]() Muk ![]() |
![]() Venomoth ![]() ![]() |
![]() Crobat ![]() ![]() |
|||||||
Lv. 40 | ♂ | Lv. 43 | ♂ | Lv. 42 | ♂ | Lv. 41 | ♂ | Lv. 44 | ♂ | ||
Ability: Insomnia | Ability: Sturdy | Ability: Sticky Hold | Ability: Shield Dust | Ability: Inner Focus | |||||||
Item: None | Item: None | Item: Black Sludge | Item: None | Item: Sitrus Berry | |||||||
Spider Web | Protect | Gunk Shot | Toxic | Double Team | |||||||
Poison Jab | Toxic Spikes | Screech | Psychic | Wing Attack | |||||||
Baton Pass | Swift | Minimize | Gust | Quick Attack | |||||||
Giga Drain | Explosion | Toxic | Supersonic | Poison Fang |
![]() Skuntank ![]() ![]() |
![]() Toxicroak ![]() ![]() |
![]() Swalot ![]() |
![]() Muk ![]() |
![]() Venomoth ![]() ![]() |
![]() Crobat ![]() ![]() | ||||||
Lv. 61 | ♂ | Lv. 60 | ♂ | Lv. 62 | ♂ | Lv. 62 | ♂ | Lv. 63 | ♂ | Lv. 64 | ♂ |
Ability: Aftermath | Ability: Dry Skin | Ability: Sticky Hold | Ability: Sticky Hold | Ability: Tinted Lens | Ability: Inner Focus | ||||||
Item: None | Item: None | Item: Leftovers | Item: Black Sludge | Item: None | Item: None | ||||||
Toxic | Gunk Shot | Amnesia | Toxic | Baton Pass | Cross Poison | ||||||
Sucker Punch | Swagger | Sludge Bomb | Minimize | Double Team | Fly | ||||||
Dig | X-Scissor | Pain Split | Screech | Silver Wind | Mean Look | ||||||
Explosion | Cross Chop | Yawn | Swagger | Psychic | Toxic |
Let's Go, Pikachu! and Let's Go, Eevee!
![]() Weezing ![]() |
![]() Muk ![]() |
![]() Golbat ![]() ![]() |
![]() Venomoth ![]() ![]() |
||||||||
Lv. 43 | - | Lv. 43 | - | Lv. 43 | - | Lv. 44 | - | ||||
Ability: | Ability: | Ability: | Ability: | ||||||||
Item: None | Item: None | Item: None | Item: None | ||||||||
Toxic | Toxic | Toxic | Sludge Bomb | ||||||||
Protect | Protect | Protect | Protect | ||||||||
Sludge Bomb | Sludge Bomb | Fly | Psychic | ||||||||
Explosion | Moonblast | Leech Life | Bug Buzz |
![]() Tentacruel ![]() ![]() |
![]() Golbat ![]() ![]() |
![]() Weezing ![]() |
![]() Venomoth ![]() ![]() |
![]() Muk ![]() |
|||||||
Lv. 56 | - | Lv. 56 | - | Lv. 56 | - | Lv. 56 | - | Lv. 57 | - | ||
Ability: | Ability: | Ability: | Ability: | Ability: | |||||||
Item: None | Item: None | Item: None | Item: None | Item: None | |||||||
Hydro Pump | Crunch | Fire Blast | Mega Drain | Sludge Bomb | |||||||
Toxic | U-turn | Thunder | Sludge Bomb | Moonblast | |||||||
Sludge Bomb | Fly | Sludge Bomb | Psychic | Mega Drain | |||||||
Mega Drain | Leech Life | Toxic | Bug Buzz | Dark Pulse |
Stadium
![]() Venomoth ![]() ![]() |
![]() Muk ![]() |
![]() Weezing ![]() |
![]() Hypno ![]() |
![]() Tangela ![]() |
![]() Parasect ![]() ![]() | ||||||
Lv. 50 | - | Lv. 50 | - | Lv. 50 | - | Lv. 50 | - | Lv. 50 | - | Lv. 50 | - |
Ability: | Ability: | Ability: | Ability: | Ability: | Ability: | ||||||
Item: | Item: | Item: | Item: | Item: | Item: | ||||||
Mega Drain | Sludge | SmokeScreen | Hypnosis | Stun Spore | Spore | ||||||
Stun Spore | Minimize | Sludge | Psychic | Double Team | Slash | ||||||
Psychic | Hyper Beam | Toxic | Counter | Rest | Mega Drain | ||||||
Hyper Beam | Toxic | Fire Blast | Seismic Toss | Solar Beam | Growth |
Stadium 2
![]() Venomoth ![]() ![]() |
![]() Magmar ![]() |
![]() Lapras ![]() ![]() |
![]() Stantler ![]() |
![]() Lanturn ![]() ![]() |
![]() Ariados ![]() ![]() | ||||||
Lv. 50 | ♀ | Lv. 50 | ♂ | Lv. 50 | ♀ | Lv. 50 | ♂ | Lv. 50 | ♂ | Lv. 50 | ♂ |
Ability: | Ability: | Ability: | Ability: | Ability: | Ability: | ||||||
Item: BrightPowder | Item: Miracle Berry | Item: Leftovers | Item: Mystery Berry | Item: Quick Claw | Item: Focus Band | ||||||
Double Team | Flamethrower | Double Team | Earthquake | Double Team | Spider Web | ||||||
Toxic | Confuse Ray | Surf | Confuse Ray | Toxic | Psybeam | ||||||
Psybeam | Toxic | Confuse Ray | Toxic | Confuse Ray | Baton Pass | ||||||
Baton Pass | Double Team | Toxic | Double Team | Thunderbolt | Double Team |
Trivia
- In Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!, if the player successfully defeats Koga in a rematch, he will state that he has been aiming to join the Elite Four, referencing him being in the Johto Elite Four.
Gallery
Kanto Gym Leaders | |
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Johto Elite Four and Champion | |
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Other Elite Four and Champions: Kanto · Hoenn · Sinnoh · Unova · Kalos · Alola · Galar |