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.
0.6m
1.0kg
Poison Gas Pokémon
Male 50% / Female 50%
purple
ball
urban
Evades ground moves.
Neutralizes abilities of all Pokémon in battle.
Has a 10% chance of making target Pokémon flinch with each hit.
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.
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
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
held-items
Held: Allows the Holder to escape from any wild battle.
Cost: 4000
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'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.
kanto
+41 more
johto
+34 more
johto
+28 more
hoenn
+3 more
kanto
sinnoh
johto
+15 more
unova
+9 more
kanto
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.
Because it stores several kinds of toxic gases inits body, it is prone to exploding without warning.
In hot places, its internal gases could expand andexplode without any warning. Be very careful!
Its thin, filmy body is filled with gases thatcause constant sniffles, coughs and teary eyes.
The poisonous gases it contains are a little bitlighter than air, keeping it slight ly airborne.
If one gets close enough to it when it expels poisonous gas, the gas swirling inside it can be seen.
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.
KOFFING embodies toxic substances. It mixes the toxins with raw garbage to set off a chemical reaction thatresults in a terribly powerful poison gas. The higher the temperature, the more gas is concocted by this POKéMON.
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.
Its thin, balloon-like body is inflated by horribly toxic gases. It reeks when it is nearby.
Because it stores several kinds of toxic gases in its body, it is prone to exploding without warning.
Lighter-than-air gases in its body keep it aloft. The gases not only smell, they are also explosive.
Its thin, filmy body is filled with gases that cause constant sniffles, coughs and teary eyes.
The poisonous gases it contains are a little bit lighter than air, keeping it slightly airborne.
Lighter-than-air gases in its body keep it aloft. The gases not only smell, they are also explosive.
Toxic gas is held within its thin, balloon-shaped body, so it can cause massive explosions.
Its thin, balloon-like body is inflated by horribly toxic gases. It reeks when it is nearby.
Lighter-than-air gases in its body keep it aloft. The gases not only smell, they are also explosive.
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.
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.
In hot places, its internal gases could expand and explode without any warning. Be very careful!
Its body is full of poisonous gas. It floats into garbage dumps, seeking out the fumes of raw, rotting trash.
It adores polluted air. Some claim that Koffing used to be more plentiful in the Galar region than they are now.
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.
Koffing can learn 69 moves:
Move | Type | Cat. | Power | Acc. | PP |
|---|---|---|---|---|---|
| acid spray | poison | Special | 40 | 100 | 20 |
| assurance | dark | Physical | 60 | 100 | 10 |
| attract | normal | Status | — | 100 | 15 |
| bide | normal | Physical | — | — | 10 |
| body slam | normal | Physical | 85 | 100 | 15 |
| captivate | normal | Status | — | 100 | 20 |
| clear smog | poison | Special | 50 | — | 15 |
| 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 | normal | Status | — | 100 | 20 |
| frustration | normal | Physical | — | 100 | 20 |
| grudge | ghost | Status | — | — | 5 |
| gunk shot | poison | Physical | 120 | 80 | 5 |
| haze | ice | Status | — | — | 30 |
| headbutt | normal | Physical | 70 | 100 | 15 |
| hidden power | normal | Special | 60 | 100 | 15 |
| memento | dark | Status | — | 100 | 10 |
| mimic | normal | Status | — | — | 10 |
| pain split | normal | Status | — | — | 20 |
| poison gas | poison | Status | — | 90 | 40 |
| protect | normal | Status | — | — | 10 |
| psybeam | psychic | Special | 65 | 100 | 20 |
| psywave | psychic | Special | — | 100 | 15 |
| rage | normal | Physical | 20 | 100 | 20 |
| rain dance | water | Status | — | — | 5 |
| rest | psychic | Status | — | — | 5 |
| return | normal | Physical | — | 100 | 20 |
| rollout | rock | Physical | 30 | 90 | 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 | 30 | 70 | 20 |
| smokescreen | normal | Status | — | 100 | 20 |
| snore | normal | Special | 50 | 100 | 15 |
| spit up | normal | Special | — | 100 | 10 |
| spite | ghost | Status | — | 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 |
| 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 |
| venoshock | poison | Special | 65 | 100 | 10 |
| will o wisp | fire | Status | — | 85 | 15 |
| zap cannon | electric | Special | 120 | 50 | 5 |
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.
Koffing is a poison type Pokemon.
Koffing evolves into weezing.
Koffing is weak to ground and psychic type moves.
Koffing can be found in pokemon mansion (kanto), burned tower (johto) and team rocket hq (johto) and 6 other locations.
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.
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.