Elite Redux LeafGreen
#109

Koffing

The Poison Gas Pokémon

Poison

Getting up close to a Koffing will give you a chance to observe, through its thin skin, the toxic gases swirling inside. It blows up at the slightest stimulation.

Base stat total
340
Height
0.6 m
Weight
1 kg
Catch rate
190

Base stats

340 total
HP 40 221 284
Atk 65 149 251
Def 95 203 317
SpA 60 140 240
SpD 45 113 207
Spe 35 95 185

At level 100, from no EVs and a hindering nature to 252 EVs and a beneficial one. Every Pokémon here has perfect IVs, so they are not part of the spread — except Speed, which the Iron Pill can drop to zero.

Type matchups

defending
Takes more
Ground 2× Psychic 2×
Takes less
Fighting ½× Poison ½× Bug ½× Grass ½× Fairy ½×

The other 11 types deal normal damage. Full chart

Takes more
Psychic 2×
Takes less
Fighting ½× Poison ½× Bug ½× Grass ½× Fairy ½×
No effect
Ground 0×

The other 11 types deal normal damage. Full chart

Takes more
Psychic 2×
Takes less
Fighting ½× Bug ½× Grass ½× Fairy ½×
No effect
Poison 0× Ground 0×

The other 11 types deal normal damage. Full chart

Abilities

3 selectable · 3 innate
Main choose one, switch any time Poison Absorb Redirects Poison moves and restores 25% HP. Neutralizing Gas All Abilities are nullified. Stench Attacks have a 10% chance to make foes flinch.
Innate always active, all of them Levitate Ground immunity; avoids hazards and terrain effects. Aftermath Damages attackers that cause a contact KO. Inflatable Ups Def and Sp. Def by one stage if hit by Flying or Fire moves.

Evolution line

Koffing Koffing BST 340
Weezing Weezing BST 490 Level · 35 Weezing (Galarian) Weezing Galarian BST 490 Level · 35

Changed from vanilla

Main abilities kept Neutralizing Gas Stench new Poison Absorb now innate Levitate
Innates added AftermathInflatable

Details

Height
0.6 m
Weight
1 kg
Gender
50% male · 50% female
Egg groups
Amorphous
Egg cycles
20
Catch rate
190
Base exp
68
Growth rate
Medium Fast
EV yield
1 Def
Base friendship
50
Wild held item
Smoke Ball
Colour
Purple

Moves

6 level-up · 13 egg · 79 teachable
LvMoveTypeCatPwrAccPP
1 Tackle Normal Physical 40 100 35
Smog Poison Special 50 70 20
32 Sludge Poison Special 65 100 20
37 Smokescreen Normal Status — 100 20
40 Self-Destruct Normal Physical 200 100 5
45 Haze Ice Status — ∞ 30
48 Explosion Normal Physical 250 100 5
MoveTypeCatPwrAccPP
Screech Normal Status — 85 40
Psywave Psychic Special 40 100 15
Psybeam Psychic Special 65 100 20
Destiny Bond Ghost Status — ∞ 5
Pain Split Normal Status — ∞ 20
Grudge Ghost Status — ∞ 5
Spite Ghost Status — 100 10
Curse Ghost Status — ∞ 10
Stockpile Normal Status — ∞ 20
Swallow Normal Status — ∞ 10
Spit Up Normal Special 1 100 10
Toxic Spikes Poison Status — ∞ 20
Venom Drench Poison Status — 100 20
MoveTypeCatPwrAccPP
Acid Spray Poison Special 40 100 20
Assurance Dark Physical 60 100 10
Attract Normal Status — 90 15
Belch Poison Special 120 100 10
Bide Normal Physical 1 ∞ 10
Body Slam Normal Physical 85 100 15
Captivate Fairy Special 65 100 20
Clear Smog Poison Special 50 ∞ 15
Confide Normal Status — ∞ 20
Corrosive Gas Poison Special 40 100 20
Curse Ghost Status — ∞ 10
Dark Pulse Dark Special 80 100 15
Destiny Bond Ghost Status — ∞ 5
Double Team Normal Status — ∞ 15
Endure Normal Status — ∞ 10
Explosion Normal Physical 250 100 5
Facade Normal Physical 70 100 20
Fire Blast Fire Special 110 85 5
Flamethrower Fire Special 90 100 15
Flash Electric Special 60 100 20
Frustration Dark Physical 75 100 10
Grudge Ghost Status — ∞ 5
Gunk Shot Poison Physical 120 80 5
Gyro Ball Steel Physical 1 100 5
Haze Ice Status — ∞ 30
Headbutt Normal Physical 70 100 15
Hidden Power Normal Special 60 100 15
Incinerate Fire Special 60 100 15
Infestation Bug Special 20 100 20
Memento Dark Status — 100 10
Mimic Normal Status — ∞ 10
Natural Gift Normal Physical 1 100 15
Pain Split Normal Status — ∞ 20
Payback Dark Physical 50 100 10
Poison Gas Poison Status — 90 40
Protect Normal Status — ∞ 10
Psybeam Psychic Special 65 100 20
Psywave Psychic Special 40 100 15
Rage Fighting Physical 120 100 5
Rain Dance Water Status — ∞ 5
Rest Psychic Status — ∞ 5
Return Normal Physical 102 100 20
Rollout Rock Physical 40 100 20
Round Normal Special 60 100 15
Scary Face Normal Status — 100 10
Screech Normal Status — 85 40
Secret Power Normal Physical 70 100 20
Self-Destruct Normal Physical 200 100 5
Shadow Ball Ghost Special 80 100 15
Shock Wave Electric Special 60 ∞ 20
Sleep Talk Normal Status — ∞ 10
Sludge Poison Special 65 100 20
Sludge Bomb Poison Special 90 100 10
Sludge Wave Poison Special 95 100 10
Smog Poison Special 50 70 20
Smokescreen Normal Status — 100 20
Snore Normal Special 85 100 15
Spite Ghost Status — 100 10
Spit Up Normal Special 1 100 10
Stockpile Normal Status — ∞ 20
Substitute Normal Status — ∞ 10
Sunny Day Fire Status — ∞ 5
Swagger Normal Status — 85 15
Swallow Normal Status — ∞ 10
Tackle Normal Physical 40 100 35
Take Down Normal Physical 90 85 20
Taunt Dark Status — 100 20
Tera Blast Normal Special 80 100 10
Thief Dark Physical 60 100 25
Thunder Electric Special 110 70 10
Thunderbolt Electric Special 90 100 15
Torment Dark Status — 100 15
Toxic Poison Status — 90 10
Toxic Spikes Poison Status — ∞ 20
Uproar Normal Special 90 100 10
Venom Drench Poison Status — 100 20
Venoshock Poison Special 65 100 10
Will-O-Wisp Fire Status — 90 10
Zap Cannon Electric Special 120 50 5

Where to find it

2 methods
Walking in grass
Surfing