Koffing
#109 in the FireRed and LeafGreen Pokédex • Poison Gas Pokémon
FireRed
Its thin, balloon-like body is inflated by horribly toxic gases. It reeks when it is nearby.
LeafGreen
Because it stores several kinds of toxic gases in its body, it is prone to exploding without warning.
Egg Group
Steps to Hatch
Effort Values Yielded
Gender Ratio
Capture Rate
Base Experience
| Pokémon | Requires | Evolution |
|---|---|---|
 Koffing #109 | Level 35 |  Weezing #110 |
FireRed
| Location | Method | Level | Chance | Conditions |
|---|---|---|---|---|
Celadon City | Surfing | 30-40 | 1% | - |
Pokémon Mansion Pokemon Mansion (1F) | Walking in tall grass or a cave | 28 | 20% | - |
Pokémon Mansion Pokemon Mansion (1F) | Walking in tall grass or a cave | 30 | 10% | - |
Pokémon Mansion Pokemon Mansion (2F) | Walking in tall grass or a cave | 28 | 20% | - |
Pokémon Mansion Pokemon Mansion (2F) | Walking in tall grass or a cave | 30 | 10% | - |
Pokémon Mansion Pokemon Mansion (3F) | Walking in tall grass or a cave | 28 | 20% | - |
Pokémon Mansion Pokemon Mansion (3F) | Walking in tall grass or a cave | 30 | 10% | - |
Pokémon Mansion Pokemon Mansion (B1F) | Walking in tall grass or a cave | 28 | 20% | - |
Pokémon Mansion Pokemon Mansion (B1F) | Walking in tall grass or a cave | 30 | 10% | - |
LeafGreen
| Location | Method | Level | Chance | Conditions |
|---|---|---|---|---|
Celadon City | Surfing | 30-40 | 1% | - |
Pokémon Mansion Pokemon Mansion (1F) | Walking in tall grass or a cave | 28 | 5% | - |
Pokémon Mansion Pokemon Mansion (2F) | Walking in tall grass or a cave | 28 | 5% | - |
Pokémon Mansion Pokemon Mansion (3F) | Walking in tall grass or a cave | 28 | 5% | - |
Pokémon Mansion Pokemon Mansion (B1F) | Walking in tall grass or a cave | 28 | 5% | - |
Normal
Shiny
Koffing
Poison Gas Pokémon
HP
40
Attack
65
Defense
95
Sp. Atk
60
Sp. Def
45
Speed
35
Total
340
Type Chart
Weaknesses
Takes 2× from
Resistances
Takes 0.5× from
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Tackle |  |  Physical | 35 | 95 | 35 | A physical attack in which the user charges, full body, into the foe. |
| Start | Poison Gas | |  Status | - | 55 | 40 | The foe is sprayed with a cloud of toxic gas that may poison the foe. |
| 9 | Smog | |  Special | 20 | 70 | 20 | The foe is attacked with exhaust gases. It may also poison the foe. |
| 17 | Self-Destruct | | Physical | 200 | 100 | 5 | The user blows up to inflict severe damage, even making itself faint. |
| 21 | Sludge | | Special | 65 | 100 | 20 | Toxic sludge is hurled at the foe. It may poison the target. |
| 25 | Smokescreen | | Status | - | 100 | 20 | An obscuring cloud of smoke or ink reduces the foe’s accuracy. |
| 33 | Haze |  | Status | - | - | 30 | Eliminates all stat changes among all Pokémon engaged in battle. |
| 41 | Explosion | | Physical | 250 | 100 | 5 | The user explodes to inflict terrible damage even while fainting itself. |
| 45 | Destiny Bond |  | Status | - | - | 5 | If the user faints, the foe delivering the final hit also faints. |
| 49 | Memento |  | Status | - | 100 | 10 | The user faints, but sharply lowers the foe’s ATTACK and SP. ATK. |
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Destiny Bond | | Status | - | - | 5 | If the user faints, the foe delivering the final hit also faints. |
| Pain Split | | Status | - | - | 20 | The user adds its HP to the foe’s HP, then equally shares the total HP. |
| Psybeam | | Special | 65 | 100 | 20 | A peculiar ray is shot at the foe. It may leave the foe confused. |
| Psywave | | Special | - | 80 | 15 | The foe is attacked with an odd, hot energy wave that varies in intensity. |
| Screech | | Status | - | 85 | 40 | An ear-splitting screech is emitted to sharply reduce the foe’s DEFENSE. |
| Will-O-Wisp |  | Status | - | 75 | 15 | A sinister, bluish white flame is shot at the foe to inflict a burn. |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| HM05 | Flash | | Status | - | 70 | 20 | A blast of light that cuts the foe’s accuracy. It also illuminates caves. |
| TM06 | Toxic | | Status | - | 85 | 10 | A move that badly poisons the foe. Its poison damage worsens every turn. |
| TM10 | Hidden Power | | Special | 1 | 100 | 15 | An attack that varies in type and intensity depending on the user. |
| TM11 | Sunny Day | | Status | - | - | 5 | The sun blazes for five turns, powering up FIRE-type moves. |
| TM12 | Taunt | | Status | - | 100 | 20 | The foe is taunted into a rage that allows it to use only attack moves. |
| TM17 | Protect | | Status | - | - | 10 | Enables the user to evade all attacks. It may fail if used in succession. |
| TM18 | Rain Dance |  | Status | - | - | 5 | A heavy rain falls for five turns, powering up WATER- type moves. |
| TM21 | Frustration | | Physical | - | 100 | 20 | This attack move grows more powerful the less the user likes its TRAINER. |
| TM24 | Thunderbolt |  | Special | 95 | 100 | 15 | A strong electrical attack that may also leave the foe paralyzed. |
| TM25 | Thunder | | Special | 120 | 70 | 10 | A brutal lightning attack that may also leave the foe paralyzed. |
| TM27 | Return | | Physical | - | 100 | 20 | This attack move grows more powerful the more the user likes its TRAINER. |
| TM30 | Shadow Ball | | Special | 80 | 100 | 15 | A shadowy blob is hurled at the foe. May also lower the foe’s SP. DEF. |
| TM32 | Double Team | | Status | - | - | 15 | The user creates illusory copies of itself to raise its evasiveness. |
| TM34 | Shock Wave | | Special | 60 | - | 20 | A rapid jolt of electricity strikes the foe. It can’t be evaded. |
| TM35 | Flamethrower | | Special | 95 | 100 | 15 | The foe is scorched with intense flames. The foe may suffer a burn. |
| TM36 | Sludge Bomb | | Special | 90 | 100 | 10 | Filthy sludge is hurled at the foe. It may poison the target. |
| TM38 | Fire Blast | | Special | 120 | 85 | 5 | The foe is hit with an intense flame. It may leave the target with a burn. |
| TM41 | Torment | | Status | - | 100 | 15 | It enrages the foe, making it incapable of using the same move successively. |
| TM42 | Facade | | Physical | 70 | 100 | 20 | An attack that is boosted if user is burned, poisoned, or paralyzed. |
| TM43 | Secret Power | | Physical | 70 | 100 | 20 | An attack that may have an additional effect that varies with the terrain. |
| TM44 | Rest | | Status | - | - | 5 | The user sleeps for two turns to fully restore HP and heal any status problem. |
| TM45 | Attract | | Status | - | 100 | 15 | If it is the other gender, the foe is made infatuated and unlikely to attack. |
| TM46 | Thief | | Physical | 40 | 100 | 10 | An attack that may take the foe’s held item if the user isn’t holding one. |
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Explosion | | Physical | 250 | 100 | 5 | The user explodes to inflict terrible damage even while fainting itself. |
| Mimic | | Status | - | - | 10 | The user copies the move last used by the foe for the rest of the battle. |
| Substitute | | Status | - | - | 10 | The user creates a decoy using one- quarter of its full HP. |
Levitate
Not hit by GROUND attacks.
Evades Ground moves.
Neutralizing Gas
Neutralizes abilities of all Pokémon in battle.