Mid-stage Pokemon like Koffing rarely see competitive play outside of special formats. It's a waypoint on the road to Weezing, which is where the real potential kicks in. Known as the Poison Gas Pokemon. Can go either physical or special depending on the set.
Defense and Attack carry most of Koffing's stat budget. Speed's the obvious dump stat. Common in the wild and yields 1 Defense EV. Follows a medium-fast 1M XP curve.
Because it stores several kinds of toxic gases in its body, it is prone to exploding without warning.
Koffing Weakness
VulnerableGround, Psychic, and Bug-type moves hit Koffing for super-effective damage. Koffing's physical bulk (base 95 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.
- Only 15 types exist — Dark, Steel, and Fairy are absent
- Ghost has no effect on Psychic (a known bug, fixed in Gen II)
- Special stat governs both offense and defense — no Sp.Atk / Sp.Def split
You'll evolve Koffing into Weezing the traditional way. This Poison type doesn't breed despite having a chain ahead. The evolved forms gain up to 150 total stats over Koffing.
How to Evolve
Start with flexible EVs EVs. A nature nature gives Koffing the right balanced lean, an item adds extra utility, and an ability works in the background. Sludge is the main damage option.
Best Build
Best Koffing Moveset
- Explosion
- Fire Blast
- Sludge
- Thunder
Recommended Teammates
Level-up moves are just the starting point for Koffing. TMs unlock Normal and Fire coverage and turn a straightforward STAB kit around Sludge and Smog into something with actual range.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
8 encounter spots for Koffing at high spawn rates starting from mid-game routes. Best and Earliest sort options below help narrow down your approach based on odds vs. Accessibility.
Best Locations
Before you go hunting for Koffing, check which of the 8 spots belong to your version. Red and Blue each have different walking encounters at Lv. 30-35.
Koffing is meant to evolve into Weezing. At 340 BST, the stats aren't there for competitive play yet. Pre-evolution Pokemon rarely hold up against fully evolved threats.
Koffing can evolve into Weezing and Galarian Weezing depending on the method. Koffing is the base form in a 3-stage evolutionary line.
Base 35 Speed is low. Priority moves or Trick Room are the way to go. On offense, Koffing is a mixed attacker — base 65 Attack and 60 Sp. Atk.
Koffing appears in 20 games, including Yellow, Red & Blue, and Gold & Silver.
One of the original 151, Koffing has appeared in 20 games — nearly every mainline game. From Red & Blue through the latest titles, it's rarely been left out of a regional Pokedex.
- Gen IY
Yellow - Gen IRBDebut
Red & Blue - Gen IIGS
Gold & Silver - Gen IIC
Crystal - Gen IIIRS
Ruby & Sapphire - Gen IIIFRLG
FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS
HeartGold & SoulSilver - Gen IVDP
Diamond & Pearl - Gen VBW
Black & White - Gen VB2W2
Black 2 & White 2 - Gen VIXY
X & Y - Gen VIORAS
Omega Ruby & Alpha Sapphire - Gen VIIUSUM
Ultra Sun & Ultra Moon - Gen VIISM
Sun & Moon - Gen VIILGPE
Let's Go Pikachu & Eevee - Gen VIIISwSh
Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP
Brilliant Diamond & Shining Pearl - Gen IXSV
Scarlet & Violet - Gen IXLZA
Legends: Z-A