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.
Lighter-than-air gases in its body keep it aloft. The gases not only smell, they are also explosive.
Koffing Weakness
AvgGround and Psychic-type moves hit Koffing for super-effective damage. 4 resistances help offset the weaknesses. Levitate grants an additional Ground immunity, reshaping the matchup chart. Koffing's physical bulk (base 95 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.
- Fairy type does not exist — Dragon has fewer checks
- Physical / Special split now per-move (introduced Gen IV)
One evolution ahead. Koffing grows into Weezing through a straightforward two-stage chain. A decent partner pool for breeding via one egg group. Eggs are average hatch time. The evolved forms gain up to 150 total stats over Koffing.
How to Evolve
Breed Koffing easily with 31 breeding partners from the Indeterminate egg group. Pass egg moves like Curse, Destiny Bond, Grudge and 6 more to offspring.
Best Build
No build content available for this Pokemon in Gen 4.
Try selecting a different game/generation filter, or check back later.
Without breeding, Koffing misses out on Curse and Destiny Bond. That's 9 egg moves adding depth that the base kit lacks. STAB comes from Sludge Bomb and Sludge, with coverage across 8 types rounding things out.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Transfer Moves
Koffing tops out at moderate rates across 1 locations in endgame routes. The encounters below are sorted by rate so you can see exactly what you're working with.
Best Locations
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.
Levitate is what you want on Koffing. Every competitive set worth running is built with that ability in mind. The alternatives (Neutralizing Gas, Stench) work on paper but Levitate is what makes Koffing worth using.
Base 35 Speed is low. Priority moves or Trick Room are the way to go. On offense, Koffing is leaning toward the physical side (base 65 Attack).
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