Stats & Training
Defense and Attack carry most of Koffing's stat budget. Speed's the obvious dump stat. Common in the wild and yields 1 Defense stat exp. Follows a medium-fast 1M XP curve.
Because it stores several kinds of toxic gases in its body, it is prone to exploding without warning.
Because it stores several kinds of toxic gases in its body, it is prone to exploding without warning.
Koffing Weakness
Ground, Psychic, and Bug moves hit Koffing for super-effective damage. Koffing's physical bulk (base 95 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.
| Damage | Types |
|---|---|
| 2x (Weak) | Ground, Psychic, Bug |
| 0.5x (Resist) | Grass, Fighting, Poison |
- Only 15 types exist — Dark, Steel, and Fairy are absent
- Ghost has no effect on Psychic (a known bug, fixed in Gen II)
- Special stat governs both offense and defense — no Sp.Atk / Sp.Def split
 Rhydon GroundRock | S | |
Available Moves Moves
Damage vs Koffing View Rhydon builds →Earthquake 2x130-154%KO Dig 2x103-123%KO | ||
 Dugtrio Ground | C | |
Available Moves Moves
Damage vs Koffing View Dugtrio builds →Earthquake 2x103-123%KO Dig 2x83-99% | ||
 Sandslash Ground | C | |
Available Moves Moves
Damage vs Koffing View Sandslash builds →Earthquake 2x103-123%KO Dig 2x83-99% | ||
 Nidoqueen PoisonGround | C | |
Obtain MethodEvolve Nidorina (Celadon City Gift) | ||
 Nidoking PoisonGround | C | |
Obtain MethodEvolve Nidorino (Celadon City Gift) | ||
Dugtrio Ground | C | |
Available Moves Moves
Damage vs Koffing View Dugtrio builds →Earthquake 2x105-124%KO Dig 2x84-100%KO | ||
 Onix RockGround | C | |
Available Moves Moves
Damage vs Koffing View Onix builds →Earthquake 2x60-72% Dig 2x47-56% | ||
 Sandshrew Ground | C | |
Available Moves Moves
Damage vs Koffing View Sandshrew builds →Earthquake 2x84-100%KO Dig 2x68-80% | ||
 Geodude RockGround | C | |
Available Moves Moves
Damage vs Koffing View Geodude builds →Earthquake 2x88-104%KO Dig 2x71-84% | ||
 Cubone Ground | D | |
Available Moves Moves
Damage vs Koffing View Cubone builds →Earthquake 2x64-76% Dig 2x51-60% Bone Club 2x44-52% | ||
Dugtrio Ground | C | |
Available Moves Moves
Damage vs Koffing View Dugtrio builds →Earthquake 2x106-125%KO Dig 2x86-103%KO | ||
Onix RockGround | C | |
Available Moves Moves
Damage vs Koffing View Onix builds →Earthquake 2x61-72% Dig 2x48-57% | ||
 Rhyhorn GroundRock | C | |
Available Moves Moves
Damage vs Koffing View Rhyhorn builds →Earthquake 2x92-110%KO Dig 2x77-91% | ||
Sandshrew Ground | C | |
Available Moves Moves
Damage vs Koffing View Sandshrew builds →Earthquake 2x84-99% Dig 2x67-80% | ||
Cubone Ground | D | |
Available Moves Moves
Damage vs Koffing View Cubone builds →Earthquake 2x65-76% Dig 2x51-61% Bone Club 2x44-53% | ||
Dugtrio Ground | C | |
Available Moves Moves
Damage vs Koffing View Dugtrio builds →Earthquake 2x100-118%KO Dig 2x82-96% | ||
Onix RockGround | C | |
Available Moves Moves
Damage vs Koffing View Onix builds →Earthquake 2x56-66% Dig 2x47-55% | ||
Rhyhorn GroundRock | C | |
Available Moves Moves
Damage vs Koffing View Rhyhorn builds →Earthquake 2x88-105%KO Dig 2x72-85% | ||
Sandshrew Ground | C | |
Available Moves Moves
Damage vs Koffing View Sandshrew builds →Earthquake 2x82-96% Dig 2x65-77% | ||
Cubone Ground | D | |
Available Moves Moves
Damage vs Koffing View Cubone builds →Earthquake 2x61-72% Dig 2x49-58% Bone Club 2x39-47% Bonemerang 2x32-39% | ||
Sandslash Ground | C | |
Available Moves Moves
Damage vs Koffing View Sandslash builds →Earthquake 2x103-123%KO Dig 2x83-99% | ||
Dugtrio Ground | C | |
Available Moves Moves
Damage vs Koffing View Dugtrio builds →Earthquake 2x103-123%KO Dig 2x83-99% | ||
 Marowak Ground | C | |
Available Moves Moves
Damage vs Koffing View Marowak builds →Earthquake 2x89-104%KO Dig 2x70-83% Bone Club 2x57-68% Bonemerang 2x46-55% | ||
 Graveler RockGround | C | |
Available Moves Moves
Damage vs Koffing View Graveler builds →Earthquake 2x102-120%KO Dig 2x82-97% | ||
Onix RockGround | C | |
Available Moves Moves
Damage vs Koffing View Onix builds →Earthquake 2x57-68% Dig 2x46-55% | ||
In Red & Blue, Slowbro's Surf hits Koffing for 67-79%. Golem threatens a KO with Earthquake (120-141%). Pinsir deals 62-73% with Hyper Beam.
 Slowbro WaterPsychic | B | |
Recommended Build Moves
Damage vs Koffing View Slowbro builds →Surf67-79% | ||
 Golem RockGround | B | |
Recommended Build Moves
Damage vs Koffing View Golem builds →Earthquake 2x120-141%KO Explosion99-117%KO Rock Slide45-53% Body Slam34-40% | ||
 Pinsir Bug | B | |
Recommended Build Moves
Damage vs Koffing View Pinsir builds →Hyper Beam62-73% Submission16-19% Bind6-8% | ||
Red & Blue Evolution
You'll evolve Koffing into Weezing the traditional way. This Poison type doesn't breed despite having a chain ahead. The evolved forms gain up to 135 total stats over Koffing. View every chain in the Evolution Chart.
How to Evolve
Red & Blue Koffing Best Moveset
Best Build
Utility Moveset
- Explosion
- Fire Blast
- Sludge
- Thunder
Recommended Teammates
Moves
Level-up moves are just the starting point for Koffing. TMs unlock Normal and Fire coverage and turn a straightforward STAB kit around Sludge and Smog into something with actual range.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Red & Blue Koffing Locations
8 encounter spots for Koffing at high spawn rates starting from mid-game routes. Best and Earliest sort options below help narrow down your approach based on odds vs. Accessibility.
Best Locations to Catch Koffing in Red & Blue
Before you go hunting for Koffing, check which of the 8 spots belong to your version. Red and Blue each have different walking encounters at Lv. 30-35.
Koffing Guide
Koffing is meant to evolve into Weezing. At 355 BST, the stats aren't there for competitive play yet. Pre-evolution Pokemon rarely hold up against fully evolved threats.
Base 35 Speed is low. Priority moves or Trick Room are the way to go. On offense, Koffing is a physical attacker with base 65 Attack.
For Red & Blue, you can run Koffing through the first few routes without issues. 355 BST won't carry you far though. Get it to Weezing as fast as you can.
Not a straight line. Koffing can become Weezing at level 35 and Galarian Weezing at level 35. Your choice depends on what you need.
Game Availability
One of the original 151, Koffing has appeared in 20 games — most mainline games. From Red & Blue through the latest titles, it's rarely been left out of a regional Pokedex.
Click a game to view version-specific details
- Gen 1Y
Yellow - Gen 1RBDebut
Red & Blue - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3FRLG
FireRed & LeafGreen - Gen 3E
Emerald - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 4DP
Diamond & Pearl - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7SM
Sun & Moon - Gen 7LGPE
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8PLA
Legends: Arceus - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves