#0110 · Kanto · Generation 1

Weezing

Poison Gas Pokémon · Poison-type

Weezing is a Poison-type Pokémon, the Poison Gas Pokémon, number 110 (#0110) in the National Pokédex. It was introduced in Generation 1 and comes from the Kanto region. It is 1.2 m tall and weighs 9.5 kg.

Weezing is the Poison Gas Pokémon, two fused heads that inflate and deflate in turn to mix their toxic gases. In Galar it takes a Poison and Fairy form that wears chimney-pot hats and puffs out clean air.

How to pronounce Weezing

Weezing is pronounced WEE-zing. The capital letters show the stressed syllable.

Listen to Weezing said out loud:

In Japanese it is マタドガス (Matadogas).

Hear every other name on the Pokémon pronunciation guide.

Lore

Biology

Weezing is a purple Pokémon of two unequal spherical heads joined by a thin tube, 1.2 m tall and 9.5 kg. The bigger head has heavy eyebrows and a skull-and-crossbones mark. The Pokédex says it forms when two Koffing fuse over many years, and, very rarely, a sudden mutation joins two Koffing in a short time.

Behaviour

Each head holds a different toxin, and Weezing mixes them by inflating one head while deflating the other, which makes the gas more toxic and smellier. The Pokédex says it settles in dirty, untidy houses and rummages through the rubbish at night.

Habitat

Its Pokédex habitat is Urban, and a Sword Pokédex entry says they were seen all over Galar back in the day. In Scarlet and Violet it arrives by trade or transfer, or by evolving Koffing in The Teal Mask. It is not available in Legends: Z-A.

Diet

It feeds on dust, germs and especially the gases that garbage and toxic waste give off.

Powers

Levitate and Neutralizing Gas are shared with Koffing, and its hidden Ability is Stench. It hits with Sludge Bomb and Belch and can use Explosion. Galarian Weezing is a Poison and Fairy type, 3 m tall and 16 kg, with hat-like tubes that release purified air and gas clouds that drift around its faces like a moustache. Its hidden Ability is Misty Surge and its signature move is Strange Steam. With 120 base Defense, either form is tough.

Name origin

Weezing may be a twist on 'wheezing'. The Japanese name is Matadogas (マタドガス), which may combine mata ('again') with doku-gasu ('poison gas'), or may come from mustard gas.

Design inspiration

Bulbapedia says Weezing may be based on a floating naval mine and on smog, and its three joined spheres resemble a molecule. Galarian Weezing appears to draw on steam engines and a Victorian British gentleman in a chimney hat. These are fan readings.

Evolution notes

Weezing evolves from Koffing at level 35, and does so in its Galarian form if the level-up happens in Galar.

In the games

Galarian Weezing joined the original Generation I Weezing in Sword and Shield. Bulbapedia lists Weezing as unobtainable in Legends: Z-A, though a statue of one stands outside the Rust Syndicate Office.

In the anime

James's Koffing evolved into Weezing in 'Dig Those Diglett!'. Ash used a Weezing in 'The Ultimate Test', where it beat the instructor's Flareon.

Fun facts

• Galarian Weezing was the earliest Galarian form to get an official reveal, according to Bulbapedia.
• The Diamond, Pearl and Platinum Pokédex entries claim triplet Weezing exist, but Bulbapedia says none has appeared in any Pokémon media.
• Galarian Weezing matches Xerneas at 3 m, which Bulbapedia counts as the tallest Fairy type apart from Arceus's Fairy form.

Sources: Bulbapedia: Weezing (Pokémon) · Serebii: Weezing (Scarlet/Violet Pokédex)

Base stats

• HP: 65
• Attack: 90
• Defense: 120
• Sp. Atk: 85
• Sp. Def: 70
• Speed: 60

Weezing’s base stat total is 490. Its highest stat is Defense.

Type matchups

What is Weezing weak to?

Weezing takes extra damage from Ground (2×), Psychic (2×) moves.

It resists Grass (½×), Fighting (½×), Poison (½×), Bug (½×), Fairy (½×).

Evolution

What does Weezing evolve from?

Weezing evolves from Koffing (Level 35; Galarian Weezing: Level 35, in Galar).

Weezing is the final stage of its evolution family.

The whole family: Koffing, Weezing.

Forms

• Galarian Weezing (Galarian form): Poison/Fairy-type, base stat total 490 (HP 65, Attack 90, Defense 120, Sp. Atk 85, Sp. Def 70, Speed 60). Abilities: Levitate, Neutralizing Gas, Misty Surge (hidden).

Abilities

• Levitate: Evades Ground moves.
• Neutralizing Gas: Neutralizes abilities of all Pokémon in battle.
• Stench (hidden ability): Has a 10% chance of making target Pokémon flinch with each hit.

Moves

Moves Weezing learns by level up in Scarlet / Violet

“Evo” means Weezing learns the move the moment it evolves: Double Hit.

TM moves (37)

Weezing can learn 37 moves from TMs in Scarlet / Violet: Take Down, Scary Face, Protect, Acid Spray, Psybeam, Thief, Facade, Venoshock, Endure, Sunny Day, Rain Dance, Body Slam, Sleep Talk, Rest, Taunt, Toxic Spikes, Dark Pulse, Gunk Shot, Substitute, Will-O-Wisp, Shadow Ball, Heat Wave, Flamethrower, Thunderbolt, Fire Blast, Sludge Bomb, Giga Impact, Hyper Beam, Thunder, Tera Blast, Haze, Toxic, Spite, Gyro Ball, Pain Split, Sludge Wave, Curse.

Egg moves (6), which Koffing can hatch knowing:Curse, Pain Split, Spit Up, Spite, Stockpile, Swallow.

Breeding & training

• Gender: 50% male, 50% female.
• Egg groups: Amorphous.
• Egg cycles: 20 (steps to hatch, Scarlet/Violet: 2,560).
• Catch rate: 60 out of 255.
• Base friendship (Gen 8 onward): 50.
• Growth rate: Medium (1,000,000 experience points to reach level 100).
• Defeating it gives 2 Defense effort values.
• Base experience yield: 172.

Pokédex entries

It can't suck in air quite as well as a Galarian Weezing, but the toxins it creates are more potent than those of its counterpart. (Shield)

It mixes gases between its two bodies. It's said that these Pokémon were seen all over the Galar region back in the day. (Sword)

This Pokémon lives and grows by absorbing poison gas, dust, and germs that exist inside garbage. (Let’s Go, Pikachu!, Let’s Go, Eevee!)

Weezing alternately shrinks and inflates its twin bodies to mix together toxic gases inside. The more the gases are mixed, the more powerful the toxins become. The Pokémon also becomes more putrid. (Sapphire, Alpha Sapphire)

Weezing loves the gases given off by rotted kitchen garbage. This Pokémon will find a dirty, unkempt house and make it its home. At night, when the people in the house are asleep, it will go through the trash. (Ruby, Omega Ruby)

Very rarely, a sudden mutation can result in two small Koffing twins becoming conjoined as a Weezing. (FireRed, Y)

Names around the world

Trivia

• Highest Defense among Poison types in Gen 1: 120.
• Taller than 58% of all Pokémon (1.2 m).
• Heavier than 27% of all Pokémon (9.5 kg).
• Base stat total 490, ranked #338 of 1,025.
• Its best stat is Defense, ranked #63 of 1,025.
• One of 83 Poison-type Pokémon (counting dual types).
• One of 87 purple Pokémon.
• Number 110 of 151 Pokémon introduced in Generation 1 (Kanto).
• Part of an evolution family of 2 Pokémon.
• Can learn 53 different moves in Scarlet / Violet.
• Catch rate 60: about 7.8% per Poké Ball at full health.
• Has 1 alternate form.
• Appears in 15 distinct Pokédex entries.

Sources and fact-checking

• Stats, types, abilities, moves, evolutions, forms and Pokédex entries: PokéAPI open game data.
• Lore: written by pokee.si in our own words, researched from Bulbapedia: Weezing (Pokémon), Serebii: Weezing (Scarlet/Violet Pokédex).
• Pronunciation (WEE-zing): it follows how the English anime, games or official videos say it.

Last checked: 19 October 2026. Every sentence of the lore was checked against Bulbapedia, Serebii and the game data.

Explore

Poison-type Pokémon · Kanto region guide · Levitate ability · Neutralizing Gas ability · Stench ability · Compare Weezing · Full Pokédex · Type chart · All moves

Browse similar Pokémon

Gen 1 Poison-type Pokémon · Gen 1 Pokémon list · Purple Pokémon list · Amorphous egg group · Pokémon that start with W

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