Is Koffing Good in HeartGold & SoulSilver Playthrough?
Burned Tower and Mahogany Hideout encounters. Poison-type with AbilityLevitate for Ground immunity in Gen 4. Weezing at level 35 tanks physical hits well. The Poison typing lacks offensive punch against most gym leaders, though.
Koffing has the type edge here and should clean up Falkner's team.
Koffing trades roughly evenly with Bugsy's team.
Koffing trades roughly evenly with Whitney's team.
Morty's team hits Koffing's weaknesses hard.
Koffing trades roughly evenly with Chuck's team.
Koffing trades roughly evenly with Jasmine's team.
Koffing trades roughly evenly with Pryce's team.
Weezing trades roughly evenly with Clair's team.
Weezing trades roughly evenly with Brock's team.
Weezing trades roughly evenly with Misty's team.
Weezing trades roughly evenly with Lt. Surge's team.
Weezing resists most of Erika's coverage and hits back hard.
Weezing trades roughly evenly with Janine's team.
Weezing trades roughly evenly with Sabrina's team.
Weezing trades roughly evenly with Blaine's team.
Weezing trades roughly evenly with Blue's team.
Weezing has the type edge here and should clean up Will's team.
Weezing trades roughly evenly with Koga's team.
Weezing trades roughly evenly with Bruno's team.
Weezing has the type edge here and should clean up Karen's team.
Weezing trades roughly evenly with Lance's team.
Catchable
Catch Koffing in Burned Tower (walking, Lv 14-16, common).
Recommended Moves
- After Bugsy
- TM38FireFire BlastPower 120Accuracy 85%PP 5Goldenrod Department Store
- TM25ElectricThunderPower 120Accuracy 70%PP 10Goldenrod Department Store
- TM35FireFlamethrowerPower 95Accuracy 100%PP 15Goldenrod Game Corner
- TM24ElectricThunderboltPower 95Accuracy 100%PP 15Goldenrod Game Corner
- LV 19NormalSelf-DestructPower 200Accuracy 100%PP 5
- LV 24PoisonSludgePower 98Accuracy 100%PP 20
- LV 37NormalExplosionPower 250Accuracy 100%PP 5
- LV 42PoisonSludge BombPower 135Accuracy 100%PP 10
Evolve Koffing to Weezing
Koffing evolves into Weezing at Level 35. Your Koffing should hit Level 35 before you reach Clair, at typical leveling pace.
Recommended Moves
- STARTING (Lv 35)
- LV 35PoisonSludgePower 98Accuracy 100%PP 20
- LV 35NormalSelf-DestructPower 200Accuracy 100%PP 5
- After Bugsy
- TM15NormalHyper BeamPower 150Accuracy 90%PP 5Goldenrod Department Store
- TM38FireFire BlastPower 120Accuracy 85%PP 5Goldenrod Department Store
- TM35FireFlamethrowerPower 95Accuracy 100%PP 15Goldenrod Game Corner
- TM24ElectricThunderboltPower 95Accuracy 100%PP 15Goldenrod Game Corner
- LV 40NormalExplosionPower 250Accuracy 100%PP 5
- LV 48PoisonSludge BombPower 135Accuracy 100%PP 10
How to Get Koffing in HeartGold & SoulSilver
Wild Koffing roams a few areas around levels 14 to 21. There is also a static one waiting in the Team Rocket hideout if you would rather battle a guaranteed catch than hunt the grass.
Wild Koffing may be holding when caught:
Smoke Ball (5% chance) An item to be held by a Pokemon. It enables the holder to flee from any wild Pokemon without fail.3 locations to catch Koffing
Encountered via tall grass encounters
Badge 4
Badge 5
Badge 6
Badge 7Where To Catch Koffing in HGSS
Koffing is the chain's first catch. You'll find walking and fixed encounters from Lv. 14-21 across 10 total spots in the chain.
- Step 2Catch or Evolve into Weezingor evolve from Koffing (Step 1)
Not landing the catch? Calculate Koffing catch rates for HeartGold & SoulSilver by ball, status, and HP.
How to Get Shiny Koffing in HeartGold & SoulSilver
Koffing floats through the Burned Tower, so breed it Masuda-style with a foreign parent at 1 in 1,638. Compare Shiny Koffing odds across every game
HeartGold & SoulSilver Shiny Koffing Calculator
3 MethodsThe best route is Masuda Method, about 1 in 1,639 on each try.
Masuda Method: Breed with a parent from a different-language game. Works on any breedable line.
Full Odds: Walk through grass, surf, or fish. Every encounter is its own independent shiny roll.
Soft Reset: Save in front of a static, gift, or legendary encounter, then reset until it sparkles.
How many you have done, or plan to do.
| Chance | Encounters | Time |
|---|---|---|
| 10%lucky few | 173-- | -- |
| 25%one in four | 472-- | -- |
| 50%coin flip | 1,136-- | -- |
| 90%very likely | 3,773-- | -- |
Time assumes -- at your pace and does not change your shiny odds.
How is this calculated?
Every encounter has the same shiny chance, the Shiny Odds Per Try shown above. Each one is a separate roll that does not care how many you have already done, so the more you hunt, the higher your overall chance of at least one shiny. The formula below turns your odds and your number of tries into that combined chance.
chance after N tries = 1 − (1 − p)^N, where p = 1 / odds per try
Example at 1 in 8,192 (classic full odds): about 864 encounters for a 10 percent chance, 5,678 for 50 percent, and 18,862 for 90 percent.
The table above flips that around: it shows how many encounters it takes to reach a 10, 25, 50, and 90 percent chance at your current odds. Turning on boosts like the Shiny Charm, sandwiches, or chains improves your odds, so the encounter numbers drop.
These are estimates, not promises. Most games have no pity counter, meaning no guaranteed shiny no matter how many you hunt, so even Very Likely is not guaranteed: some hunters find one early, others go well past that point.
Want exact numbers for your session? Calculate your shiny odds in HeartGold & SoulSilver with Koffing preloaded.
Koffing Weakness
Ground and Psychic 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.
| Damage | Types |
|---|---|
| 2x (Weak) | Ground, Psychic |
| 0.5x (Resist) | Grass, Fighting, Poison, Bug |
- Fairy type does not exist — Dragon has fewer checks
- Physical / Special split now per-move (introduced Gen IV)
What is Koffing Weak Against
AvgBest Pokemon Against Koffing
Koffing Evolutions
One evolution ahead. Koffing grows into Weezing through a straightforward two-stage chain. A decent partner pool for breeding via one egg group. Eggs take an average time to hatch. The evolved forms gain up to 150 total stats over Koffing. View every chain in the Evolution Chart.
How to Evolve
Breeding
Breed Koffing easily with 31 breeding partners from the Amorphous egg group. Pass egg moves like Curse, Destiny Bond, Grudge and 6 more to offspring.
HGSS Koffing Best Moveset
Ground immunity through AbilityLevitate removes Poison's main weakness entirely, leaving only Psychic as a super-effective hit. 95 Defense blocks physical attacks well above its stage. Spreads poison and takes hits. Weezing adds the competitive bulk.
Best Build
Koffing best EVs are Defense and HP
Wall Moveset
- Sludge Bomb
- Will O Wisp
- Fire Blast
- Shadow Ball
Recommended Teammates
Moves List
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.
How to Read the Moves Table
Tabs
- Level-Up
- Learned by leveling up.
- TM
- Taught by a Technical Machine.
- Egg
- Inherited via breeding.
- Tutor
- NPC tutor (cost: items, BP, money).
- Reminder
- An NPC reteaches any move this Pokemon could have learned by leveling up.
- Transfer
- Carried over from an older game using Pokemon HOME.
- Event
- Given out through Mystery Gift events.
Visual Signals
CAT (Category)
How the move deals damage and which stats it uses.
A small dot on the icon's corner marks the move as contact. That triggers abilities like Static, Flame Body, Rough Skin, or Iron Barbs, plus items like Rocky Helmet and Sticky Barb.
Tier (S to D)
Each move's competitive rank in RankedBoost's system. TM, Egg, and Tutor sort by tier by default (best first). On Level-Up, click the Tier header to do the same.
PWR (Power)
Base damage. Numbers shown in a type color include STAB (base × 1.5). Hover any colored number to see the math.
— means no power (status moves) or variable power.
Sorting & Filter
Click any column header to sort. Level-Up opens with Lv 1 at the top. TM, Egg, and Tutor open with the highest-tier moves at the top.
Search filters by move name or type. The Filter button limits the list to STAB, Physical, Special, or Status moves.
Level-Up Moves
TM Moves
All 24 TMs are obtainable before the Elite Four
Egg Moves
Tutor Moves
Base Stats
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.
Koffing HeartGold & SoulSilver Guide
- Where in the HeartGold & SoulSilver Safari Zone can I find Koffing?
See the Locations section above for where to find Koffing in HeartGold & SoulSilver.
Safari rules: You can only use Safari Balls. No battling. Two tactical items shift the catch/flee trade-off:
- Throw bait to keep Koffing from fleeing (flee rate cut to 1/4) but it becomes harder to catch (catch factor halved).
- Throw a rock to make Koffing easier to catch (catch factor doubled) but it flees twice as often.
- Each effect lasts 2-6 random turns; throwing one cancels the other.
Koffing is a static encounter at Johto Team Rocket Hq in HeartGold & SoulSilver. Koffing appears at level 21. Save before the encounter. These one-shot Pokemon don't respawn if you knock them out or run out of Poke Balls.
Yes. Wild Koffing in HeartGold & SoulSilver can hold Smoke Ball (5%). Use Thief (TM46) or Covet to swipe the held item without affecting your catch chance. Quickest way to farm rare items like Smoke Ball.
For HeartGold & SoulSilver, you can run Koffing through the first few routes without issues. 340 BST won't carry you far though. Get it to Weezing as fast as you can.
Game Availability
One of the original 151, Koffing has appeared in 20 games: most mainline games. From Red & Blue through the latest titles, it's rarely been left out of a regional Pokedex.
Click a game to view version-specific details
- Gen 1RBDebut
Red & Blue - Gen 1Y
Yellow - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3E
Emerald - Gen 3FRLG
FireRed & LeafGreen - Gen 4DP
Diamond & Pearl - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7SM
Sun & Moon - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7Let's Go
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 8PLA
Legends: Arceus - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves
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