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 Data

Classification Poison Gas Pokémon
Height 0.6 m (1'12")
Weight 1.0 kg (2.2 lbs)
Abilities N/A in Gen II

Held Items

None in this generation.

Game Locations

  • Burned Tower 1f
  • Burned Tower B1f
  • Team Rocket Hq Area

Training

EV Yield +1 defense
Catch Rate 190
Base Friendship 70
Growth Rate medium
Gender Ratio
Egg Groups Indeterminate

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