Encounter locations
| Region | Location | Method | Level |
|---|---|---|---|
| Kanto | Pokémon Mansion 1F | Walking | 28–30 |
| Kanto | Pokémon Mansion 2F | Walking | 28–30 |
| Kanto | Pokémon Mansion 3F | Walking | 28–30 |
| Kanto | Pokémon Mansion B1F | Walking | 28–30 |
| Hoenn | Fiery Path | Walking | 15–16 |
| Sinnoh | Stark Mountain Room 2 | Walking | 53 |
| Johto | Burned Tower | Overworld swarmOnly while this swarm is active | — |
| Johto | Burned Tower 1F | WalkingDay | 14–16 |
| Johto | Burned Tower 1F | WalkingNight | 14–16 |
| Johto | Burned Tower B1F | WalkingDay | 14–16 |
| Johto | Burned Tower B1F | WalkingNight | 14–16 |
This Pokémon is eligible for Mirage Rifts. Each opening rolls its own pool, so check active portals on the Town Map.
Check the Town Map to see which swarms are active.
This guide covers documented encounter tables and selected story events. Other scripted gifts or events may also award this Pokémon.
Natures
Randomly generated Pokémon can have any of the 25 natures. Twenty raise one stat by 10% and lower another by 10%. Five are neutral. HP stays the same.
View all 25 natures and stat effects
| Nature | Raises (+10%) | Lowers (−10%) |
|---|---|---|
| Hardy | — | — |
| Lonely | Attack | Defense |
| Brave | Attack | Speed |
| Adamant | Attack | Special Attack |
| Naughty | Attack | Special Defense |
| Bold | Defense | Attack |
| Docile | — | — |
| Relaxed | Defense | Speed |
| Impish | Defense | Special Attack |
| Lax | Defense | Special Defense |
| Timid | Speed | Attack |
| Hasty | Speed | Defense |
| Serious | — | — |
| Jolly | Speed | Special Attack |
| Naive | Speed | Special Defense |
| Modest | Special Attack | Attack |
| Mild | Special Attack | Defense |
| Quiet | Special Attack | Speed |
| Bashful | — | — |
| Rash | Special Attack | Special Defense |
| Calm | Special Defense | Attack |
| Gentle | Special Defense | Defense |
| Sassy | Special Defense | Speed |
| Careful | Special Defense | Special Attack |
| Quirky | — | — |
Stats and abilities
- HP
- 40
- Attack
- 65
- Defense
- 95
- Sp. Attack
- 60
- Sp. Defense
- 45
- Speed
- 35
Abilities · Levitate / Neutralizing Gas
Hidden ability · Stench
Size · 0.6 m · 1 kg
Evolution and forms
- Into Weezing · Level 35
Level-up moves
View level-up moves for Koffing
| Level | Move |
|---|---|
| 1 | Tackle |
| 1 | Poison Gas |
| 4 | Smog |
| 8 | Smokescreen |
| 12 | Clear Smog |
| 16 | Assurance |
| 20 | Sludge |
| 24 | Haze |
| 28 | Self Destruct |
| 32 | Sludge Bomb |
| 36 | Toxic |
| 40 | Belch |
| 44 | Explosion |
| 48 | Memento |
| 52 | Destiny Bond |