DexDB

No. 0110

Weezing

Poison Gas Pokémon

BaseGalarian
Weezing
Official art
Poison
Height
1.2 m 3′11″
Weight
9.5 kg 20.9 lbs
Base stat total
490 Higher than 65% of Pokémon
Introduced
Gen I Red & Green (JP)
Abilities
Pokédex entryShield
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.
See all 15 entries

Base stats

HP65140–172240–334
Atk9099–156166–306
Def120126–189220–372
SpA8594–150157–295
SpD7081–134130–262
Spe6072–123112–240
Total490Higher than 65% of Pokémon
HP65Atk90Def120Spe60SpD70SpA85

Ranges in Pokémon Champions at Lv 50: 0 Stat Points with a −10% Stat Alignment to 32 Stat Points with a +10% one (HP has no alignment).Ranges in the main games at Lv 100: 0 IV/EV with a hindering nature to 31 IV/252 EV with a helpful nature. EV yield: 2 Def.

Stat calculatorChampions Stat Points & Stat Alignment, or EVs, IVs & nature
Calculate damage →

Type matchups

Weak to

2×
GroundPsychic

Resists

½×
BugFairyFightingGrassPoison
Takes normal damage from 11 types
NormalFlyingRockGhostSteelFireWaterElectricIceDragonDark

With : Ground becomes 0×

Speed tiers

The faster Pokémon moves first each turn, so knowing who you outspeed decides a lot of battles. These are its Speed values at Lv 50 in Pokémon Champions (base Speed 60); Scarf and Tailwind use the Max+ value.

Max+123Max112No SP80Min72Scarf184Tailwind246

At max Speed, Weezing outspeeds 12 of the 30 most used Pokémon in Champions VGC on Showdown.

  1. 203Mega Garchomp ZModest · 32 SP · #21 on Showdown
  2. 200Mega GengarTimid · 32 SP · #26 on Showdown
  3. 190Mega Raichu YTimid · 23 SP · #13 on Showdown
  4. 189Mega SalamenceTimid · 32 SP · #4 on Showdown
  5. 184WhimsicottTimid · 32 SP · #23 on Showdown
  6. 178Mega MetagrossJolly · 32 SP · #28 on Showdown
  7. 178Mega StaraptorJolly · 32 SP · #29 on Showdown
  8. 172SneaslerAdamant · 32 SP · #2 on Showdown
  9. 169Mega FloetteTimid · 32 SP · #17 on Showdown
  10. 169GarchompJolly · 32 SP · #19 on Showdown
  11. 167Mega Charizard YTimid · 32 SP · #14 on Showdown
  12. 167Mega GardevoirTimid · 32 SP · #20 on Showdown
  13. 161IndeedeeTimid · 32 SP · #30 on Showdown
  14. 156Hisuian ArcanineJolly · 32 SP · #16 on Showdown
  15. 150ArchaludonTimid · 32 SP · #9 on Showdown
  16. 149GholdengoTimid · 32 SP · #8 on Showdown
  17. 143BasculegionJolly · 32 SP · #6 on Showdown
  18. 128PelipperTimid · 32 SP · #12 on Showdown
  19. 123Weezing · Max+32 SP, Speed-raising alignment
  20. 120VolcaronaBold · 0 SP · #25 on Showdown
  21. 112Weezing · Max32 SP, neutral alignment
  22. 105RillaboomAdamant · 0 SP · #1 on Showdown
  23. 101MiloticCalm · 0 SP · #15 on Showdown
  24. 95SylveonModest · 15 SP · #18 on Showdown
  25. 94Female IndeedeeRelaxed · 0 SP · #7 on Showdown
  26. 90PolitoedCalm · 0 SP · #22 on Showdown
  27. 90SinistchaBold · 0 SP · #24 on Showdown
  28. 85ArmarougeQuiet · 0 SP · #27 on Showdown
  29. 80Weezing · No SP0 SP, neutral alignment
  30. 80IncineroarCareful · 0 SP · #3 on Showdown
  31. 80FarigirafBold · 0 SP · #11 on Showdown
  32. 70KingambitAdamant · 0 SP · #5 on Showdown
  33. 60Mega GolisopodAdamant · 0 SP · #10 on Showdown

Smogon · Showdown Others at their most common Speed investment in Champions VGC (Reg M-C · Doubles, Sep 2026); Pokémon holding a Mega Stone are shown as their Mega.

Abilities

Competitive

Smogon · Showdown On Showdown

Sep 2026
Other Showdown formats Scarlet & Violet, with Tera
SV SinglesZUSV Doubles(DUU)National DexRU

0.32% of teams · rank #132 · Singles · 1630+ rating · 20,763 battles · Sep 2026

Most common build

Item
Rocky Helmet
Ability
Nature
Bold
EVs
252 HP / 252 Def / 4 SpA
Tera Type
Fairy
  1. Pain Split
  2. Flamethrower
  3. Sludge Bomb
  4. Toxic Spikes

Each part is the most used on its own, so not every team runs this exact set.

Usage by rating

  • All players0.33%
  • Rated 1500+0.32%
  • Rated 1630+0.32%
  • Rated 1760+0.08%

Usage by month

Oct 20250.32%

Moves

Items

Abilities

  • 82.4%
  • 17.6%

EV spreads

  • Bold 252 HP / 252 Def / 4 SpA49.9%
  • Bold 248 HP / 172 Def / 64 SpA / 24 Spe23%
  • Bold 252 HP / 252 Def / 4 SpD17.5%
  • Bold 252 HP / 252 Def / 4 Spe4.7%
  • Bold 248 HP / 252 Def / 8 SpA2.9%

Tera types

  • Fairy32.1%
  • Dark23.1%
  • Steel21.6%
  • Flying17.6%

Common teammates

Evolution

  1. #0109KoffingPoison
    1. Level 35
      #0110WeezingPoison
    2. Level 35
      #0110Galarian WeezingPoisonFairy

Moves

Level up 17

EvoDouble HitHits 2 times in one turn.NormalPhys3590%10
1Heat Wave10% chance to burn the foe(s).FireSpec9590%10
1Poison GasPoisons the foe(s).PoisonStatus—90%40
1Smog40% chance to poison the target.PoisonSpec3070%20
1SmokescreenLowers the target's accuracy by 1.NormalStatus—100%20
1TackleNo additional effect.NormalPhys40100%35
12Clear SmogResets all of the target's stat stages to 0.PoisonSpec50—15
16AssurancePower doubles if target was damaged this turn.DarkPhys60100%10
20Sludge30% chance to poison the target.PoisonSpec65100%20
24HazeEliminates all stat changes.IceStatus——30
28Self-DestructHits adjacent Pokémon. The user faints.NormalPhys200100%5
32Sludge Bomb30% chance to poison the target.PoisonSpec90100%10
38ToxicBadly poisons the target. Poison types can't miss.PoisonStatus—90%10
44BelchCannot be selected until the user eats a Berry.PoisonSpec12090%10
50ExplosionHits adjacent Pokémon. The user faints.NormalPhys250100%5
56MementoLowers target's Attack, Sp. Atk by 2. User faints.DarkStatus—100%10
62Destiny BondIf an opponent knocks out the user, it also faints.GhostStatus——5

TM / HM / TR 37

TM01Take DownHas 1/4 recoil.NormalPhys9085%20
TM06Scary FaceLowers the target's Speed by 2.NormalStatus—100%10
TM07ProtectPrevents moves from affecting the user this turn.NormalStatus——10
TM13Acid Spray100% chance to lower the target's Sp. Def by 2.PoisonSpec40100%20
TM16Psybeam10% chance to confuse the target.PsychicSpec65100%20
TM18ThiefIf the user has no item, it steals the target's.DarkPhys60100%25
TM25FacadePower doubles if user is burn/poison/paralyzed.NormalPhys70100%20
TM45VenoshockPower doubles if the target is poisoned.PoisonSpec65100%10
TM47EndureUser survives attacks this turn with at least 1 HP.NormalStatus——10
TM49Sunny DayFor 5 turns, intense sunlight powers Fire moves.FireStatus——5
TM50Rain DanceFor 5 turns, heavy rain powers Water moves.WaterStatus——5
TM66Body Slam30% chance to paralyze the target.NormalPhys85100%15
TM70Sleep TalkUser must be asleep. Uses another known move.NormalStatus——10
TM85RestUser sleeps 2 turns and restores HP and status.PsychicStatus——5
TM87TauntTarget can't use status moves its next 3 turns.DarkStatus—100%20
TM91Toxic SpikesPoisons grounded foes on switch-in. Max 2 layers.PoisonStatus——20
TM94Dark Pulse20% chance to make the target flinch.DarkSpec80100%15
TM102Gunk Shot30% chance to poison the target.PoisonPhys12080%5
TM103SubstituteUser takes 1/4 its max HP to put in a substitute.NormalStatus——10
TM107Will-O-WispBurns the target.FireStatus—85%15
TM114Shadow Ball20% chance to lower the target's Sp. Def by 1.GhostSpec80100%15
TM118Heat Wave10% chance to burn the foe(s).FireSpec9590%10
TM125Flamethrower10% chance to burn the target.FireSpec90100%15
TM126Thunderbolt10% chance to paralyze the target.ElectricSpec90100%15
TM141Fire Blast10% chance to burn the target.FireSpec11085%5
TM148Sludge Bomb30% chance to poison the target.PoisonSpec90100%10
TM152Giga ImpactUser cannot move next turn.NormalPhys15090%5
TM163Hyper BeamUser cannot move next turn.NormalSpec15090%5
TM166Thunder30% chance to paralyze. Can't miss in rain.ElectricSpec11070%10
TM171Tera BlastIf Terastallized: Phys. if Atk > SpA, type = Tera.NormalSpec80100%10
TM174HazeEliminates all stat changes.IceStatus——30
TM175ToxicBadly poisons the target. Poison types can't miss.PoisonStatus—90%10
TM177SpiteLowers the PP of the target's last move by 4.GhostStatus—100%10
TM180Gyro BallMore power the slower the user than the target.SteelPhys—100%5
TM202Pain SplitShares HP of user and target equally.NormalStatus——20
TM214Sludge Wave10% chance to poison adjacent Pokémon.PoisonSpec95100%10
TM224CurseCurses if Ghost, else -1 Spe, +1 Atk, +1 Def.GhostStatus——10

Biology

Weezing evolves from Koffing, and is said to form when two Koffing fuse. Like Koffing, it is a hovering purple ball containing poison, featuring a skull and bones pattern on its body; with evolution, it gains a second, smaller head. Its two heads have different toxins, and it makes its poisonous gas stronger and smellier by pushing it between said heads.

Weezing will nest in unkept, unsanitary places, usually houses, and raid their trash. Kantonian Weezing were once a common sight in Galar, and produced stronger gases than other regions' Weezing.

Design & origin

In English, Weezing was originally going to be named "La," referring to Los Angeles, while Koffing was originally named "Ny," referring to New York; these names were chosen due to the high levels of air pollution in these areas at the time.

Galarian Weezing's new elements were designed to make it fit into a United Kingdom-based environment, and Shigeru Ohmori stated that its design was inspired by seeing a steam engine.

Forms

Galarian Weezing

Galarian Weezing has two heads each with a protrusion on top, resembling both smokestacks and top hats. Its body is grey, while its smog, which serves as faux facial hair, is green, and it retains the skull and bones sign.

It came about in response to air pollution from factories, consuming the contaminants and expelling clean air.

Adapted from Wikipedia: List of generation VIII Pokémon, Weezing · CC BY-SA 4.0 · edited.

Pokédex entries

Poison Gas Pokémon
Kanto · Red & Green (JP)
Color
Purple
Urban
Pal Park area
Mountain
Kanto#110Original Johto#115Original Hoenn#109Updated Johto#116Updated Unova#047New Hoenn#114Let’s Go Kanto#110Galar#251Kitakami#136

  1. 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

  2. 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

  3. This Pokémon lives and grows by absorbing poison gas, dust, and germs that exist inside garbage.

    Let’s Go, Pikachu! · Let’s Go, Eevee!

  4. Inhaling toxic fumes from trash and mixing them inside its body lets it spread an even fouler stench.

    Black 2 · White 2

  5. It grows by feeding on gases released by garbage. Though very rare, triplets have been found.

    Diamond · Pearl · Platinum · Black · White

  6. Where two kinds of poison gases meet, two KOFFING can fuse into a WEEZING over many years.

    LeafGreen

  7. Very rarely, a sudden mutation can result in two small KOFFING twins becoming conjoined as a WEEZING.

    FireRed · Y

  8. By diluting its toxic gases with a special process, the highest grade of perfume can be extracted. To WEEZING, gases emanating from garbage are the ultimate feast.

    Emerald

  9. 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

  10. 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

  11. When it inhales poisonous gases from garbage, its body expands, and its insides smell much worse.

    Crystal

  12. Top-grade perfume is made using its internal poison gases by diluting them to the highest level.

    Silver · SoulSilver

  13. If one of the twin KOFFING inflates, the other one deflates. It constantly mixes its poisonous gases.

    Gold · HeartGold · X

  14. It lives and grows by absorbing dust, germs and poison gases that are contained in toxic waste and garbage.

    Yellow

  15. Where two kinds of poison gases meet, 2 KOFFINGs can fuse into a WEEZING over many years.

    Red · Blue

Names around the world

English
Weezing
Japanese
マタドガス
Japanese (romaji)
Matadogas
Korean
또도가스
Chinese (Traditional)
雙彈瓦斯
Chinese (Simplified)
双弹瓦斯
French
Smogogo
German
Smogmog
Spanish
Weezing
Italian
Weezing

Sprites

Artwork and 3D models

Gen IX · Gen VIII · Gen VII · Gen VI

Generation V

Generation IV

Generation III

Generation II

Generation I

Training

2 Def
60 ≈7.8% with a Poké Ball at full HP
70
172
Medium

Breeding

Amorphous
♂ 50%♀ 50%
20 egg cycles ≈5,355 steps (Gen IV–VII)

Where to find

Evolves from Koffing: Level 35.

Shield: The Crown Tundra 1 area
  • Max LairCapture during a Dynamax Adventure. · Lv 65
Shield: The Isle of Armor 1 area
  • Random caves across the Isle of ArmorTrade with an NPC · Lv 15
Green 4 areas
  • Pokemon Mansion (1F)Walking in tall grass or a cave · Lv 39
  • Pokemon Mansion (2F)Walking in tall grass or a cave · Lv 37
  • Pokemon Mansion (3F)Walking in tall grass or a cave · Lv 42
  • Pokemon Mansion (B1F)Walking in tall grass or a cave · Lv 42
Red 4 areas
  • Pokemon Mansion (1F)Walking in tall grass or a cave · Lv 37
  • Pokemon Mansion (2F)Walking in tall grass or a cave · Lv 39
  • Pokemon Mansion (3F)Walking in tall grass or a cave · Lv 38–40
  • Pokemon Mansion (B1F)Walking in tall grass or a cave · Lv 40–42
Sword: The Crown Tundra 1 area
  • Max LairCapture during a Dynamax Adventure. · Lv 65
Sword: The Isle of Armor 1 area
  • Random caves across the Isle of ArmorTrade with an NPC · Lv 15
Let’s Go, Eevee! 5 areas
  • Pokemon Mansion (1F)Walking in the overworld · Lv 39–44
  • Pokemon Mansion (2F)Walking in the overworld · Lv 39–44
  • Pokemon Mansion (3F)Walking in the overworld · Lv 39–44
  • Pokemon Mansion (B1F)Walking in the overworld · Lv 39–44
  • Power PlantWalking in the overworld · Lv 37–42
White 2 1 area
  • P2 LaboratoryWalking in tall grass or a cave · Lv 57–58
Black 2 1 area
  • P2 LaboratoryWalking in tall grass or a cave · Lv 57–58
SoulSilver 1 area
  • Safari Zone MarshlandWalking in tall grass or a cave · Lv 15–17
HeartGold 1 area
  • Safari Zone MarshlandWalking in tall grass or a cave · Lv 15–17
Platinum 4 areas
  • Road 227Walking in tall grass or a cave · Lv 52
  • Stark Mountain entranceWalking in tall grass or a cave · Lv 51–53
  • Stark Mountain exteriorWalking in tall grass or a cave · Lv 52
  • Stark Mountain main cavernWalking in tall grass or a cave · Lv 52–54
Pearl 4 areas
  • Road 227Walking in tall grass or a cave · Lv 55
  • Stark Mountain entranceWalking in tall grass or a cave · Lv 56
  • Stark Mountain exteriorWalking in tall grass or a cave · Lv 55
  • Stark Mountain main cavernWalking in tall grass or a cave · Lv 58
Diamond 4 areas
  • Road 227Walking in tall grass or a cave · Lv 55
  • Stark Mountain entranceWalking in tall grass or a cave · Lv 56
  • Stark Mountain exteriorWalking in tall grass or a cave · Lv 55
  • Stark Mountain main cavernWalking in tall grass or a cave · Lv 58
FireRed 4 areas
  • Pokemon Mansion (1F)Walking in tall grass or a cave · Lv 32
  • Pokemon Mansion (2F)Walking in tall grass or a cave · Lv 32
  • Pokemon Mansion (3F)Walking in tall grass or a cave · Lv 32
  • Pokemon Mansion (B1F)Walking in tall grass or a cave · Lv 34
Crystal 1 area
  • Burned Tower (B1F)Walking in tall grass or a cave · Lv 16
Blue 4 areas
  • Pokemon Mansion (1F)Walking in tall grass or a cave · Lv 39
  • Pokemon Mansion (2F)Walking in tall grass or a cave · Lv 37
  • Pokemon Mansion (3F)Walking in tall grass or a cave · Lv 42
  • Pokemon Mansion (B1F)Walking in tall grass or a cave · Lv 42
Red 4 areas
  • Pokemon Mansion (1F)Walking in tall grass or a cave · Lv 37
  • Pokemon Mansion (2F)Walking in tall grass or a cave · Lv 39
  • Pokemon Mansion (3F)Walking in tall grass or a cave · Lv 38–40
  • Pokemon Mansion (B1F)Walking in tall grass or a cave · Lv 40–42

Locations cover Red & Blue to Sword & Shield (with its DLC) and Let’s Go. We don’t have them yet for Legends: Arceus, Brilliant Diamond & Shining Pearl, Scarlet & Violet and Legends: Z-A.