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Koffing

#109 in the Yellow Pokédex • Poison Gas Pokémon

Pokémon Yellow

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

Pokédexes

Kanto #109

Egg Group

Amorphous

Steps to Hatch

5,120

Effort Values Yielded

1 Def

Gender Ratio

50% male / 50% female

Capture Rate

190

Base Experience

68
PokémonRequiresEvolution
Koffing

Koffing

#109

Level 35

Weezing

Weezing

#110

Lickitung

Weezing

Koffing normal sprite

Normal

Koffing

Poison Gas Pokémon

#109
Poison

Height

0.6 m

Weight

1 kg

Base XP

68

HP

40

Attack

65

Defense

95

Sp. Atk

60

Sp. Def

60

Speed

35

Total

355

Type Chart

Weaknesses

Takes 2× from

GroundPsychicBug

Resistances

Takes 0.5× from

GrassFightingPoison
Class
Description
StartTackleNormalPhysical359535

StartSmogPoisonSpecial207020

32SludgePoisonSpecial6510020

37SmokescreenNormalStatus-10020

40Self-DestructNormalPhysical1301005

45HazeIceStatus--30

48ExplosionNormalPhysical1701005

Class
Description
TM06ToxicPoisonStatus-8510

TM20RageNormalPhysical2010020

TM24ThunderboltElectricSpecial9510015

TM25ThunderElectricSpecial1107010

TM31MimicNormalStatus--10

TM32Double TeamNormalStatus--15

TM34BideNormalPhysical--10

TM36Self-DestructNormalPhysical1301005

TM38Fire BlastFireSpecial110855

TM44RestPsychicStatus--5

TM47ExplosionNormalPhysical1701005

TM50SubstituteNormalStatus--10

Dittobase

© 2026 dittobase.com. All rights reserved.

This website is an independent platform and is not associated with, validated, backed, or sponsored by Nintendo, Game Freak, Niantic, or The Pokémon Company.

Y / Pokédex

Koffing

Koffing

#109 in the Yellow Pokédex • Poison Gas Pokémon

Pokémon Yellow

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

Pokédexes

Kanto #109

Egg Group

Amorphous

Steps to Hatch

5,120

Effort Values Yielded

1 Def

Gender Ratio

50% male / 50% female

Capture Rate

190

Base Experience

68
PokémonRequiresEvolution
Koffing

Koffing

#109

Level 35

Weezing

Weezing

#110

Lickitung

Weezing

Koffing normal sprite

Normal

Koffing

Poison Gas Pokémon

#109
Poison

Height

0.6 m

Weight

1 kg

Base XP

68

HP

40

Attack

65

Defense

95

Sp. Atk

60

Sp. Def

60

Speed

35

Total

355

Type Chart

Weaknesses

Takes 2× from

GroundPsychicBug

Resistances

Takes 0.5× from

GrassFightingPoison
Class
Description
StartTackleNormalPhysical359535

StartSmogPoisonSpecial207020

32SludgePoisonSpecial6510020

37SmokescreenNormalStatus-10020

40Self-DestructNormalPhysical1301005

45HazeIceStatus--30

48ExplosionNormalPhysical1701005

Class
Description
TM06ToxicPoisonStatus-8510

TM20RageNormalPhysical2010020

TM24ThunderboltElectricSpecial9510015

TM25ThunderElectricSpecial1107010

TM31MimicNormalStatus--10

TM32Double TeamNormalStatus--15

TM34BideNormalPhysical--10

TM36Self-DestructNormalPhysical1301005

TM38Fire BlastFireSpecial110855

TM44RestPsychicStatus--5

TM47ExplosionNormalPhysical1701005

TM50SubstituteNormalStatus--10

Dittobase

© 2026 dittobase.com. All rights reserved.

This website is an independent platform and is not associated with, validated, backed, or sponsored by Nintendo, Game Freak, Niantic, or The Pokémon Company.