League partner · #088 · Uncommon

Grimer in PokéBonk

Grimer is a Poison-type uncommon League partner in PokéBonk (role: Sludge). Its passive is Muddy Body — -15% damage taken. When hit, you leave a toxic puddle for 4 s that poisons and traps anyone who steps in it. Like Muk, the puddles are bigger. It evolves into Muk at level 45.

Dataminedv0.7.7 · checked Oct 20, 2026
#088GrimerPoison
Role
Sludge
Rarity
Uncommon
Evolves
Lv.45
Final form
Muk

Passive

Muddy Body

-15% damage taken. When hit, you leave a toxic puddle for 4 s that poisons and traps anyone who steps in it. Like Muk, the puddles are bigger.

Test status We have not played Grimer yet. Everything on this page comes from the v0.7.7 game files (official text), so it matches the game — but numbers like damage and HP in a real run are not measured yet. See what we have tested →

How to unlock Grimer

To add it to your League, complete its challenge — poison 20,000 pokémon — then weaken and catch it when it appears in your next run.

League challenge1 step
  1. Poison 20,000 Pokémon.
    Goal: 20,000
  2. Catch it in your next run.
    After the challenge is complete, Grimer appears in a run. Weaken it and catch it — it only joins your League once it is caught.

"In a single run" goals must be met in one run; the others add up across all your runs. League-size goals count the partners you have caught.

Grimer's moves

These are the four moves listed in Grimer's League kit. You start a run with the first one; the other three are among the moves level-up cards can offer (partners can also be offered moves from their evolution line and from your League — see level-up cards).

MoveTypeCategoryBase power*Style
Poison Gas · starting movePoisonStatus—Aura
SludgePoisonSpecial65Orb
Shadow SneakGhostPhysical40Dash
BelchPoisonSpecial120Cone

* Base power is the main-series value the game starts from; in a run, damage scales with level, upgrades and vitamins. See level-up cards.

Grimer's Ultimate

Grimer has a signature Ultimate that changes as it evolves. Charge it by fighting, then press R to cast it.

Stage 1 · Grimer

Sludge Tide

A wave of mud spreads out from you in a circle up to 14 m, poisons everyone and leaves toxic puddles.

Stage 2 · Muk

Gulp

You melt into a giant 9 m puddle that pulls in, poisons and traps for 2 s, and bursts into mud geysers.

Grimer's evolution

It evolves into Muk at level 45.

  1. StartGrimerPoison
  2. Lv.45MukPoison

Base stats

The main-series base stats the game builds Grimer from (total 325). In a run, your HP, armor and damage also depend on level, Lab upgrades, vitamins and your passive.

HP80
Attack80
Defense50
Sp. Atk40
Sp. Def50
Speed25

Similar partners

FAQ

How do I unlock Grimer in PokéBonk?

To add it to your League, complete its challenge — poison 20,000 pokémon — then weaken and catch it when it appears in your next run.

What is Grimer's passive in PokéBonk?

Muddy Body: -15% damage taken. When hit, you leave a toxic puddle for 4 s that poisons and traps anyone who steps in it. Like Muk, the puddles are bigger.

What is Grimer's Ultimate?

Sludge Tide (Grimer): A wave of mud spreads out from you in a circle up to 14 m, poisons everyone and leaves toxic puddles.

Gulp (Muk): You melt into a giant 9 m puddle that pulls in, poisons and traps for 2 s, and bursts into mud geysers.

When does Grimer evolve in PokéBonk?

It evolves into Muk at level 45. Run evolution levels are higher than in the main series games.

Sources