PokeBonk Koffing
Pokemon · rank 74 of 79 League Pokemon · last checked 2026-10-20
PokeBonk Koffing is a Poison-type League Pokemon of uncommon rarity. It starts each run with Smog, carries the Toxic Cloud passive and the Explosive Cloud Ultimate, and evolves into Weezing as you level up in a run. You unlock it with a League challenge and then catch it in a later run. Its Kit Score is 10.9, rank 74 of 79: D tier.
Koffing at a glance
| Pokedex number | #109 |
| Type | Poison |
| League rarity | Uncommon |
| Tier | D (Kit Score 10.9, rank 74 of 79) |
| Starting move | Smog |
| Passive | Toxic Cloud |
| Ultimate | Explosive Cloud |
| How to get it | League challenge, then a capture |
| Evolves | Weezing at level 43 |
| Base stat total | 340 |
How to unlock Koffing in PokeBonk
Koffing joins your League in two steps. First, finish its League challenge; the counters add up across runs unless a goal says "in a single run":
- Trigger 5,000 elemental reactions.
Catching Koffing
Then Koffing can show up as a Wild Encounter in your next runs, 50 to 120 seconds into a zone. It runs away after 150 seconds, so weaken it and throw a Poke Ball before then. The PokeBonk unlock Pokemon guide lists every challenge.
Koffing moves in PokeBonk
Each League Pokemon has a fixed kit of four moves. Move 1 is equipped from the start; moves 2, 3 and 4 are offered as new-move cards at player levels 2, 4 and 7. A run holds three moves until you buy the 4th move slot in the Lab. Hit damage below is the move's base hit at level 1 before your stats, items and type bonus; cooldowns shrink with attack speed.
| Slot | Move | Type | Class | Shape | Unlocks | Base hit | Cooldown |
|---|---|---|---|---|---|---|---|
| 1 | Smog | Poison | Special | Cone | Start | 4 | 1.7 s |
| 2 | Clear Smog | Poison | Special | Explosive orb | Level 2 | 18 | 1.29 s |
| 3 | Self-Destruct | Normal | Physical | Shockwave | Level 4 | 45 | 2.99 s |
| 4 | Explosion | Normal | Physical | Meteor | Level 7 | 99 | 4.6 s |
Koffing passive: Toxic Cloud
You levitate: hold Jump to glide and you can climb walls. A 4 m gas cloud surrounds you and poisons every second. Like Weezing, 5.5 m.
Smog and Clear Smog match Koffing's type, so they deal 25% more damage (same-type bonus). Moves can also be learned from its learnset and from other League members of the same type, which the PokeBonk beginner guide explains.
Koffing Ultimate in PokeBonk
Koffing's Ultimate gets stronger as the line evolves: each form has its own version. Press R (Y on a controller) when the bar is full, or turn on Auto Ultimate with the Y key. The PokeBonk Ultimate guide explains how the bar charges.
| Form | Ultimate | Duration | What it does |
|---|---|---|---|
| Koffing | Explosive Cloud | 2 s | A 9 m toxic cloud grows around you for 1.6 s, poisoning everyone, and then bursts in an enormous explosion. |
| Weezing | Big Blast | 2.8 s | Two clouds (yours and another in front), a gigantic detonation and eight chain explosions on the enemies. |
Koffing evolution levels in PokeBonk
In PokeBonk every evolution happens by player level inside a run, whatever the main games ask for. The Koffing line evolves like this: Koffing evolves into Weezing at level 43.
Koffing stats in runs
The game turns base stats into run stats with the share of each stat in the base stat total, so a balanced Pokemon and a lopsided one end up with different strengths. Each evolution stage adds 0.12 to the HP and damage multiplier. These are the starting values before Lab upgrades, items and vitamins:
| Form | Stage | Max HP | Armor | Speed | Physical | Special | Damage |
|---|---|---|---|---|---|---|---|
| Koffing | 0 | 102 | 12.4 | 0.99x | 1.05x | 1.03x | 1x |
| Weezing | 1 | 119 | 11.4 | 1.01x | 1.04x | 1.03x | 1.12x |
Koffing base stats
Base stats from the game's Pokedex file (base stat total 340):
| HP | Attack | Defense | Sp. Atk | Sp. Def | Speed |
|---|---|---|---|---|---|
| 40 | 65 | 95 | 60 | 45 | 35 |
PokeBonk Koffing FAQ
How do you unlock Koffing in PokeBonk?
Finish its League challenge (trigger 5,000 elemental reactions), then catch it when it appears as a Wild Encounter in a later run.
Is Koffing good in PokeBonk?
By Kit Score it ranks 74 of 79 League Pokemon, in D tier. The score reads its kit damage, HP, armor and speed at its final form; passives that trigger effects and the Ultimate are not counted, so see the tier list for the method.
When does Koffing evolve in PokeBonk?
Koffing evolves into Weezing at level 43. Evolution only depends on your player level in the run.
What is Koffing's Ultimate?
Explosive Cloud. Fire it with R on a keyboard or Y on a controller once the bar is full.
See where all 151 Pokemon land on the PokeBonk tier list, or browse the full PokeBonk Pokedex.