Koffing
Gold

Its thin, filmy body is filled with gases that cause constant sniffles, coughs and teary eyes.

Silver

The poisonous gases it contains are a little bit lighter than air, keeping it slight­ ly airborne.

Crystal

If one gets close enough to it when it expels poison­ ous gas, the gas swirling inside it can be seen.

Evolution Chain

koffing
Koffing
Level 35
weezing
Weezing

Pokédex & Training Data

Classification Poison Gas Pokémon
Height 0.6 m (1'12")
Weight 1.0 kg (2.2 lbs)
Abilities N/A in Gen II
EV Yield +1 defense
Catch Rate 190
Base Friendship 70
Growth Rate medium
Gender Ratio
♂ ♀
Egg Groups Indeterminate

Pokédex Numbers

Kanto (R/B/Y) #109
Johto (G/S/C) #114
Hoenn (R/S/E) #108
Johto (HG/SS) #115
Unova (B2/W2) #046
Hoenn (OR/AS) #113
Galar (Sw/Sh) #250
National #109
Kitakami #135

Held Items

None in this generation.

Game Locations

Burned Tower 1f
Burned Tower B1f
Team Rocket Hq Area

Learned Moves

Level Up Moves

Gold/Silver
Lvl Name Class Power Acc. PP Effect
1 Tackle
40 100% 35 Inflicts regular damage with no additional effect.
1 Poison Gas
— 90% 40 Poisons the target.
9 Smog
30 70% 20 Has a 40% chance to poison the target.
17 Self Destruct
200 100% 5 User faints.
21 Sludge
65 100% 20 Has a 30% chance to poison the target.
25 Smokescreen
— 100% 20 Lowers the target’s accuracy by one stage.
33 Haze
— — 30 Resets all Pokémon’s stats, accuracy, and evasion.
41 Explosion
250 100% 5 User faints.
45 Destiny Bond
— — 5 If the user faints this turn, the target automatically will, too.
Crystal
Lvl Name Class Power Acc. PP Effect
1 Tackle
40 100% 35 Inflicts regular damage with no additional effect.
1 Poison Gas
— 90% 40 Poisons the target.
9 Smog
30 70% 20 Has a 40% chance to poison the target.
17 Self Destruct
200 100% 5 User faints.
21 Sludge
65 100% 20 Has a 30% chance to poison the target.
25 Smokescreen
— 100% 20 Lowers the target’s accuracy by one stage.
33 Haze
— — 30 Resets all Pokémon’s stats, accuracy, and evasion.
41 Explosion
250 100% 5 User faints.
45 Destiny Bond
— — 5 If the user faints this turn, the target automatically will, too.

TM/HM Moves

Gold/SilverCrystal
Name Class Power Acc. PP Effect
TM03 Curse
— — 10 Ghosts pay half their max HP to hurt the target every turn. Others decrease Speed but raise Attack and Defense.
TM04 Rollout
30 90% 20 Power doubles every turn this move is used in succession after the first, resetting after five turns.
TM06 Toxic
— 90% 10 Badly poisons the target, inflicting more damage every turn.
TM07 Zap Cannon
120 50% 5 Has a 100% chance to paralyze the target.
TM10 Hidden Power
60 100% 15 Power and type depend upon user’s IVs. Power can range from 30 to 70.
TM11 Sunny Day
— — 5 Changes the weather to sunny for five turns.
TM13 Snore
50 100% 15 Has a 30% chance to make the target flinch. Only works if the user is sleeping.
TM17 Protect
— — 10 Prevents any moves from hitting the user this turn.
TM20 Endure
— — 10 Prevents the user’s HP from lowering below 1 this turn.
TM21 Frustration
— 100% 20 Power increases as happiness decreases, up to a maximum of 102.
TM25 Thunder
110 70% 10 Has a 30% chance to paralyze the target.
TM27 Return
— 100% 20 Power increases with happiness, up to a maximum of 102.
TM32 Double Team
— — 15 Raises the user’s evasion by one stage.
TM34 Swagger
— 85% 15 Raises the target’s Attack by two stages and confuses the target.
TM35 Sleep Talk
— — 10 Randomly uses one of the user’s other three moves. Only works if the user is sleeping.
TM36 Sludge Bomb
90 100% 10 Has a 30% chance to poison the target.
TM38 Fire Blast
110 85% 5 Has a 10% chance to burn the target.
TM44 Rest
— — 5 User sleeps for two turns, completely healing itself.
TM45 Attract
— 100% 15 Target falls in love if it has the opposite gender, and has a 50% chance to refuse attacking the user.
TM46 Thief
60 100% 25 Takes the target’s item.

Tutor Moves

Crystal
Name Class Power Acc. PP Effect
Flamethrower
90 100% 15 Has a 10% chance to burn the target.
Thunderbolt
90 100% 15 Has a 10% chance to paralyze the target.

Egg Moves

Gold/SilverCrystal
Name Class Power Acc. PP Effect
Destiny Bond
— — 5 If the user faints this turn, the target automatically will, too.
Pain Split
— — 20 Sets the user’s and targets’s HP to the average of their current HP.
Psybeam
65 100% 20 Has a 10% chance to confuse the target.
Psywave
— 100% 15 Inflicts damage between 50% and 150% of the user’s level.
Screech
— 85% 40 Lowers the target’s Defense by two stages.

Base Stats

Hp 40
Attack 65
Defense 95
Sp. Atk 60
Sp. Def 45
Speed 35
Total 340

Type Defenses

(vs. Gen 6+ rules)

0.5x
0.5x
0.5x
2x
2x
0.5x
0.5x