Pokemondex
#0108lickitung
#0110weezing

koffing

Generation I · #0109 — Poison Gas Pokémon

Koffing, the Poison Gas Pokémon, is a Generation I Poison-type that has become an iconic symbol of toxic environments and chemical hazards in the Pokémon world. As National Pokédex #109, Koffing occupies a unique ecological niche as a living embodiment of pollution and contamination. Standing at just 0.6 meters tall and weighing a mere 1.0 kilogram, this small but potent Pokémon defies its diminutive size through the sheer toxicity of the gases it produces and harbors within its body. With a base stat total of 340 and exceptional defensive capabilities—boasting a base Defense stat of 95—Koffing serves as a tanky Poison-type option in early-game scenarios and competitive play alike. The species is known for its 50% male to 50% female gender ratio and reaches sexual maturity at a relatively quick pace with a Medium growth rate, making it accessible to trainers early in their journey.

Base Stats

HP40
Attack65
Defense95
Sp. Atk60
Sp. Def45
Speed35
Total340
Height

0.6m

Weight

1.0kg

Category

Poison Gas Pokémon

Gender

Male 50% / Female 50%

Color

purple

Shape

ball

Habitat

urban

Abilities
Levitate

Evades ground moves.

Neutralizing Gas

Neutralizes abilities of all Pokémon in battle.

StenchHidden

Has a 10% chance of making target Pokémon flinch with each hit.

Koffing Biology & Physical Characteristics

Koffing's physiology is entirely built around gas production and storage, making it a fascinating study in how Pokémon can weaponize environmental pollution. Its body is a spherical, semi-translucent purple form filled with various toxic gases that it creates by mixing toxins with raw garbage through a chemical reaction that intensifies in higher temperatures. The Pokédex entries reveal that Koffing's thin, filmy body is prone to over-inflation and potential explosion if it becomes too pressurized, making it a volatile creature to be around. Multiple geyser-like protrusions cover its surface, typically releasing a mustard-colored gas that causes sniffles, coughs, and teary eyes in those nearby. Its vacant eyes and wide mouth with pointed teeth give it a somewhat menacing appearance, though the cream-colored skull-and-crossbones marking below its face hints at the genuinely dangerous nature of this Pokémon. The gases Koffing produces are lighter than air, which explains its ability to hover despite lacking obvious locomotion mechanisms, allowing it to float effortlessly through polluted environments.

Pokedex Numbers

national#109
kanto#109
original johto#114
hoenn#108
updated johto#115
updated unova#46
updated hoenn#113
letsgo kanto#109
galar#250
kitakami#135

Training

EV Yield1 Defense
Catch Rate190
Base Happiness70
Base Exp.68
Growth Ratemedium

Breeding

Egg Groupsindeterminate
GenderMale 50% / Female 50%
Egg Cycles20 (5355 steps)

Koffing Breeding, Gender Ratio & Egg Groups

Koffing exhibits a perfectly balanced 50% male to 50% female gender distribution, allowing for straightforward breeding mechanics that enable players to raise Koffing populations relatively easily. The species belongs to the Amorphous egg group, a category typically reserved for gelatinous, gaseous, and otherworldly Pokémon that lack traditional biological constraints. With a base friendship value of 70 (in generations 2-7) and a hatch counter of 20, Koffing eggs take approximately 4,884 to 5,140 steps to hatch, making them a moderately quick incubation compared to other Pokémon species. The combination of the Amorphous egg group and balanced gender ratio makes Koffing a viable breeding partner for other species within the same group, facilitating various breeding strategies for competitive trainers. Baby Pokémon related to Koffing do not exist, meaning there is no younger evolutionary stage preceding it, positioning Koffing itself as the entry point to this evolutionary line.

Held Items

Smoke Ball
ruby5%
Smoke Ball
sapphire5%
Smoke Ball
emerald5%
Smoke Ball
diamond5%
Smoke Ball
pearl5%
Smoke Ball
platinum5%
Smoke Ball
heartgold5%
Smoke Ball
soulsilver5%
Smoke Ball
black5%
Smoke Ball
white5%
Smoke Ball
black 25%
Smoke Ball
white 25%
Smoke Ball
x5%
Smoke Ball
y5%
Smoke Ball
omega ruby5%
Smoke Ball
alpha sapphire5%
Smoke Ball
sun5%
Smoke Ball
moon5%
Smoke Ball
ultra sun5%
Smoke Ball
ultra moon5%
Smoke Ball
ruby5%
Smoke Ball
sapphire5%
Smoke Ball
emerald5%
Smoke Ball
diamond5%
Smoke Ball
pearl5%
Smoke Ball
platinum5%
Smoke Ball
heartgold5%
Smoke Ball
soulsilver5%
Smoke Ball
black5%
Smoke Ball
white5%
Smoke Ball
black 25%
Smoke Ball
white 25%
Smoke Ball
x5%
Smoke Ball
y5%
Smoke Ball
omega ruby5%
Smoke Ball
alpha sapphire5%
Smoke Ball
sun5%
Smoke Ball
moon5%
Smoke Ball
ultra sun5%
Smoke Ball
ultra moon5%

Sprites

koffing Front
Front
koffing Back
Back
koffing Shiny Front
Shiny Front
koffing Shiny Back
Shiny Back
koffing Home
Home
koffing Home Shiny
Home Shiny
koffing Showdown
Showdown
koffing Showdown Shiny
Showdown Shiny

Held Items

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

smoke-ball

held-items

Held: Allows the Holder to escape from any wild battle.

Cost: 4000

TMs & HMs

tm01

lets go pikachu lets go eevee

tm02

crystal

tm02

gold silver

tm02

lets go pikachu lets go eevee

tm03

crystal

tm03

gold silver

tm04

gold silver

tm04

crystal

tm05

lets go pikachu lets go eevee

tm06

yellow

tm06

gold silver

tm06

red blue

tm06

crystal

tm06

emerald

tm06

firered leafgreen

tm06

diamond pearl

tm06

platinum

tm06

ruby sapphire

tm06

colosseum

tm06

black 2 white 2

+576 more TMs/HMs

Koffing Evolution, Mega Evolution & Special Forms

Koffing's evolution line is straightforward and occurs at level 35, when it transforms into Weezing, a dual-Poison-type that maintains and amplifies the toxic nature of its pre-evolution. In the Galar region, however, Weezing takes on a unique regional form that becomes Poison-Fairy type, a remarkable deviation that reflects the different environmental and magical influences of that region. The evolution from Koffing to standard Weezing represents a maturation and consolidation of toxic power, with the evolving Pokémon developing a more complex body structure and enhanced abilities. The regional Galarian variant demonstrates how Koffing's evolutionary potential can be dramatically altered by geographical and cultural factors, producing a form that incorporates fairy-type properties alongside its traditional poison typing. This evolutionary flexibility makes Koffing an interesting choice for trainers seeking either a traditional toxic powerhouse or a more unconventional poison-type option depending on their game version and strategic preferences.

Where to Find

pokemon mansion

kanto

redLv. 31-31 (20% chance)
redLv. 31-31 (10% chance)
redLv. 33-33 (20% chance)

+41 more

burned tower

johto

goldLv. 14-14 (30% chance)
goldLv. 16-16 (20% chance)
goldLv. 16-16 (20% chance)

+34 more

team rocket hq

johto

goldLv. 21-21 (100% chance)
goldLv. 21-21 (100% chance)
goldLv. 21-21 (100% chance)

+28 more

fiery path

hoenn

rubyLv. 15-15 (20% chance)
rubyLv. 16-16 (5% chance)
sapphireLv. 14-14 (1% chance)

+3 more

celadon city

kanto

fireredLv. 30-40 (1% chance)
leafgreenLv. 30-40 (1% chance)

stark mountain

sinnoh

platinumLv. 53-53 (1% chance)
platinumLv. 53-53 (4% chance)

johto safari zone

johto

heartgoldLv. 15-15 (10% chance)
heartgoldLv. 15-15 (10% chance)
heartgoldLv. 15-15 (10% chance)

+15 more

virbank complex

unova

black 2Lv. 12-12 (4% chance)
black 2Lv. 13-13 (1% chance)
black 2Lv. 10-10 (10% chance)

+9 more

power plant

kanto

lets go eeveeLv. 37-42 (100% chance)

Koffing Behaviour and Natural Habitat

Koffing thrives in environments heavy with pollution and toxic waste, making it commonly found in industrial areas, power plants, and chemically contaminated zones throughout the Pokémon world. When agitated, Koffing becomes significantly more dangerous, raising the toxicity of its internal gases and jetting them out from all over its body as a defensive mechanism. This volatile response demonstrates that despite its relatively docile appearance, Koffing should be approached with extreme caution, as it can overinflate its round body and explode without warning when provoked. The species appears to be attracted to garbage and waste materials, which it incorporates into its body to fuel its poison gas production. In populated areas, Koffing is known to cause respiratory distress among nearby inhabitants, with its constant emission of noxious fumes creating noticeable atmospheric changes. Its preference for filthy, contaminated environments suggests an ecological role as a sort of living indicator of pollution levels, thriving where other Pokémon would sicken or flee.

Pokedex Entries

redblue

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!

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.

ruby

If KOFFING becomes agitated, it raises the toxicity of its internal gases and jets them out from all over its body. This POKéMON may also overinflate its round body, then explode.

sapphire

KOFFING embodies toxic substances. It mixes the toxins with raw garbage to set off a chemical reaction that results in a terribly powerful poison gas. The higher the temperature, the more gas is concocted by this POKéMON.

emerald

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.

firered

Its thin, balloon-like body is inflated by horribly toxic gases. It reeks when it is nearby.

leafgreen

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

diamondpearlplatinum

Lighter-than-air gases in its body keep it aloft. The gases not only smell, they are also explosive.

heartgold

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

soulsilver

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

blackwhite

Lighter-than-air gases in its body keep it aloft. The gases not only smell, they are also explosive.

black 2white 2

Toxic gas is held within its thin, balloon-shaped body, so it can cause massive explosions.

x

Its thin, balloon-like body is inflated by horribly toxic gases. It reeks when it is nearby.

y

Lighter-than-air gases in its body keep it aloft. The gases not only smell, they are also explosive.

omega ruby

If Koffing becomes agitated, it raises the toxicity of its internal gases and jets them out from all over its body. This Pokémon may also overinflate its round body, then explode.

alpha sapphire

Koffing embodies toxic substances. It mixes the toxins with raw garbage to set off a chemical reaction that results in a terribly powerful poison gas. The higher the temperature, the more gas is concocted by this Pokémon.

lets go pikachulets go eevee

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

sword

Its body is full of poisonous gas. It floats into garbage dumps, seeking out the fumes of raw, rotting trash.

shield

It adores polluted air. Some claim that Koffing used to be more plentiful in the Galar region than they are now.

Koffing Name Origin & Design Inspiration

The name Koffing is derived from the English word "cough," directly referencing the respiratory distress caused by its noxious gases, combined with "offing," which carries connotations of elimination or death—fitting for a Poison-type Pokémon. Its Japanese name, Dogars (ドガース), appears to blend onomatopoeia related to gas emissions with design inspiration from biological organisms that produce gases. The visual design draws heavily from gas-filled balloons or spheres, featuring a round, buoyant body that emphasizes its aerial nature and gas-based composition. The geyser-like protrusions across its surface serve both aesthetic and functional purposes, representing the various toxic emissions it produces. The skull-and-crossbones marking is an unmistakable symbol of danger and poison, making Koffing's hazardous nature immediately apparent to anyone encountering it. The color scheme of purple and cream reflects both the murky, polluted aesthetics of its preferred habitats and the visual distinction between its body and the toxic emissions it produces, creating a design that is simultaneously cute and clearly dangerous.

Learnable Moves

Koffing can learn 69 moves:

Move
Type
Cat.
Power
Acc.
PP
acid spraypoison
Special
4010020
assurancedark
Physical
6010010
attractnormal
Status
10015
bidenormal
Physical
10
body slamnormal
Physical
8510015
captivatenormal
Status
10020
clear smogpoison
Special
5015
curseghost
Status
10
dark pulsedark
Special
8010015
destiny bondghost
Status
5
double teamnormal
Status
15
endurenormal
Status
10
explosionnormal
Physical
2501005
facadenormal
Physical
7010020
fire blastfire
Special
110855
flamethrowerfire
Special
9010015
flashnormal
Status
10020
frustrationnormal
Physical
10020
grudgeghost
Status
5
gunk shotpoison
Physical
120805
hazeice
Status
30
headbuttnormal
Physical
7010015
hidden powernormal
Special
6010015
mementodark
Status
10010
mimicnormal
Status
10
pain splitnormal
Status
20
poison gaspoison
Status
9040
protectnormal
Status
10
psybeampsychic
Special
6510020
psywavepsychic
Special
10015
ragenormal
Physical
2010020
rain dancewater
Status
5
restpsychic
Status
5
returnnormal
Physical
10020
rolloutrock
Physical
309020
roundnormal
Special
6010015
scary facenormal
Status
10010
screechnormal
Status
8540
secret powernormal
Physical
7010020
self destructnormal
Physical
2001005
shadow ballghost
Special
8010015
shock waveelectric
Special
6020
sleep talknormal
Status
10
sludgepoison
Special
6510020
sludge bombpoison
Special
9010010
sludge wavepoison
Special
9510010
smogpoison
Special
307020
smokescreennormal
Status
10020
snorenormal
Special
5010015
spit upnormal
Special
10010
spiteghost
Status
10010
stockpilenormal
Status
20
substitutenormal
Status
10
sunny dayfire
Status
5
swaggernormal
Status
8515
swallownormal
Status
10
tacklenormal
Physical
4010035
take downnormal
Physical
908520
tauntdark
Status
10020
thiefdark
Physical
6010025
thunderelectric
Special
1107010
thunderboltelectric
Special
9010015
tormentdark
Status
10015
toxicpoison
Status
9010
toxic spikespoison
Status
20
uproarnormal
Special
9010010
venoshockpoison
Special
6510010
will o wispfire
Status
8515
zap cannonelectric
Special
120505

Koffing Competitive Battle Guide

In competitive Pokémon play, Koffing operates as a defensive wall rather than an offensive powerhouse, leveraging its exceptional 95 base Defense stat to absorb physical attacks while its 60 base Special Attack limits its damage output potential. Its ability selection is remarkably versatile: Levitate allows it to avoid ground-type moves entirely, Neutralizing Gas disrupts opposing Pokémon's abilities in battle, and its hidden ability Stench can flinch opponents 10% of the time with each hit, adding unpredictable value to its attacks. With only 40 base HP and 45 base Special Defense, Koffing struggles against special attackers and benefits greatly from defensive item support and Reflect or Light Screen setup moves. Its low 35 base Speed means Koffing will almost always move last, making it unsuitable for offensive priority strategies but excellent for passive, defensive playstyles that capitalize on its defensive stats and utility abilities. Competitive players often employ Koffing in lower-tier formats or as a niche specialist that can disrupt opponent strategies through its ability effects rather than raw damage output, making it a valid but situational choice in team building.

Commonly Asked Questions About Koffing

What type is Koffing?

Koffing is a poison type Pokemon.

What does Koffing evolve into?

Koffing evolves into weezing.

What are Koffing's weaknesses?

Koffing is weak to ground and psychic type moves.

Where can I find Koffing?

Koffing can be found in pokemon mansion (kanto), burned tower (johto) and team rocket hq (johto) and 6 other locations.

Koffing Cultural Impact & Franchise History

Koffing achieved significant cultural prominence through its association with Team Rocket in the Pokémon animated series, particularly through James's memorable Koffing, which became one of the most recognizable Team Rocket Pokémon and demonstrated unexpected loyalty and personality. This exposure transformed Koffing from a simple toxic Pokémon into a character with depth and emotional resonance, resonating with audiences who watched the show's early seasons. The species has appeared in various media adaptations, trading card games, and crossover titles, establishing itself as a recognizable symbol of poison-type Pokémon and toxic environments. Koffing's design—combining elements of danger with an almost endearing spherical form—has made it a favorite subject for fan art, merchandise, and community discussions about generation one Pokémon design philosophy. The introduction of the Galarian regional form in later games renewed interest in Koffing's evolutionary line, demonstrating its continued relevance to the franchise. In popular culture, Koffing often serves as a visual representation of pollution and environmental hazards, making it not only a beloved Pokémon but also a symbol of environmental consciousness within the fanbase.

Where to Find Koffing in Every Pokémon Game

Koffing has maintained relatively consistent availability throughout the Pokémon games, appearing in multiple regions and being accessible in most mainline titles. Players can encounter wild Koffing in various locations including Pokémon Red, Blue, Yellow, Gold, Silver, Crystal, and their remakes FireRed and LeafGreen, with its location varying depending on the region's geography and environmental factors. In modern games like Pokémon Sword and Shield, Koffing appears in the Pokédex but may require the Poké Ball Plus accessory or specific encounters to obtain. Its relatively high catch rate of 190 makes it an easy Pokémon to capture with standard Poké Balls, encouraging new trainers to add it to their rosters without significant difficulty. Koffing's appearance in spin-off games, mobile titles like Pokémon GO, and various side games ensures that players across all demographics have opportunities to obtain and interact with this iconic Poison-type. The species' status as a Generation I Pokémon guarantees its inclusion in Pokédex entries and historical references, cementing its place as a foundational member of the Pokémon roster available to trainers seeking a toxic-type addition to their teams.