Koffing
Red/Blue

Because it stores several kinds of toxic gases in its body, it is prone to exploding without warning.

Yellow

In hot places, its internal gases could expand and explode without any warning. Be very careful!

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 I

Held Items

None in this generation.

Game Locations

  • Pokemon Mansion 1f
  • Pokemon Mansion 2f
  • Pokemon Mansion 3f
  • Pokemon Mansion B1f

Training

EV Yield +1 defense
Catch Rate 190
Base Friendship 70
Growth Rate medium

Learned Moves

Level Up Moves

Red/Blue
Lvl Name Class Power Acc. PP Effect
1 Tackle
40 100% 35 Inflicts regular damage with no additional effect.
1 Smog
30 70% 20 Has a 40% chance to poison the target.
32 Sludge
65 100% 20 Has a 30% chance to poison the target.
37 Smokescreen
100% 20 Lowers the target's accuracy by one stage.
40 Self Destruct
200 100% 5 User faints.
45 Haze
30 Resets all Pokémon's stats, accuracy, and evasion.
48 Explosion
250 100% 5 User faints.
Yellow
Lvl Name Class Power Acc. PP Effect
1 Tackle
40 100% 35 Inflicts regular damage with no additional effect.
1 Smog
30 70% 20 Has a 40% chance to poison the target.
32 Sludge
65 100% 20 Has a 30% chance to poison the target.
37 Smokescreen
100% 20 Lowers the target's accuracy by one stage.
40 Self Destruct
200 100% 5 User faints.
45 Haze
30 Resets all Pokémon's stats, accuracy, and evasion.
48 Explosion
250 100% 5 User faints.

TM/HM Moves

Red/BlueYellow
Name Class Power Acc. PP Effect
TM06 Toxic
90% 10 Badly poisons the target, inflicting more damage every turn.
TM20 Rage
20 100% 20 If the user is hit after using this move, its Attack rises by one stage.
TM24 Thunderbolt
90 100% 15 Has a 10% chance to paralyze the target.
TM25 Thunder
110 70% 10 Has a 30% chance to paralyze the target.
TM31 Mimic
10 Copies the target's last used move.
TM32 Double Team
15 Raises the user's evasion by one stage.
TM34 Bide
10 User waits for two turns, then hits back for twice the damage it took.
TM36 Self Destruct
200 100% 5 User faints.
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.
TM47 Explosion
250 100% 5 User faints.
TM50 Substitute
10 Transfers 1/4 of the user's max HP into a doll, protecting the user from further damage or status changes until it breaks.

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