What does Grimer evolve into?

Grimer has 2 evolution paths: Muk at level 38 and Alolan Muk at level 38. Different conditions, different results.

At what level does Grimer evolve?

Grimer has 2 evolution paths: Muk at level 38 and Alolan Muk at level 38. Different method for each one.

For Red & Blue, you can run Grimer through the first few routes without issues. 315 BST won't carry you far though. Get it to Muk as fast as you can.

Where can you catch Grimer?

Grimer is catchable in Red & Blue. Check the Locations section above for specific routes, encounter rates, and methods. It also appears in 18 other games across the series.

Grimer - Weakness, Evolution, Moveset, EVs & Stats

Physical

Trick Room

DTier

25Speed · Very Slow

Stats & Training

HP and Attack carry most of Grimer's stat budget. Speed's the obvious dump stat. Common in the wild and yields 1 HP stat exp. Follows a medium-fast 1M XP curve.

Base Stats

Avg

HP80

Attack80

Defense50

Sp. Atk40

Sp. Def40

Speed25

Total315

Details

Catch Rate

Easy190 / 255

Growth Rate

Medium Fast1M XP

Height0.9 m

Weight30.0 kg

Base XP65

Abilities

Abilities were introduced in Generation III. Shown below for reference.

Stench

Has a 10% chance of making target Pokémon flinch with each hit.

Sticky Hold

Prevents a held item from being removed by other Pokémon.

Poison TouchHA

Has a 30% chance of poisoning target Pokémon upon contact.

EV Yield

HP+1AtkDefSpASpDSpe

HP training source

Pokedex Entries

Appears in filthy areas. Thrives by sucking up polluted sludge that is pumped out of factories.

Grimer Weakness

Grimer is weak to Ground, Psychic, and Bug. Standard number of weaknesses for the Poison typing.

Grimer Weakness and Resistance Chart
Damage	Types
2x (Weak)	Ground, Psychic, Bug
0.5x (Resist)	Grass, Fighting, Poison

Type ChartVulnerable

3Weak

3Resist

0Immune

Score-3

Gen I Type Chart

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

4xCritical

None

2xWeak

Ground Psychic Bug

½xResist

Grass Fighting Poison

¼xResist

None

0xImmune

None

STAB (2)

Grass Bug

How to Beat Grimer in Red & Blue (Best Counters)

Dugtrio Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 122-144%KO Dig 2x 97-115%KO View Dugtrio builds →
Onix RockGround	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 66-78% Dig 2x 54-64% View Onix builds →
Rhyhorn GroundRock	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 108-127%KO Dig 2x 87-103%KO View Rhyhorn builds →
Sandshrew Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 97-115%KO Dig 2x 78-92% View Sandshrew builds →
Cubone Ground	D
Available Moves Moves EarthquakeTM26 DigTM28 Bone ClubLv. 1 BonemerangLv. 43 Damage vs Grimer Earthquake 2x 73-86% Dig 2x 59-70% Bone Club 2x 49-58% Bonemerang 2x 38-45% View Cubone builds →

Red & Blue Evolution

Grimer evolves into Muk, but can't breed. At 315 stats as a Poison type, evolution is the only path. Evolving adds up to 185 stat points total. View every chain in the Evolution Chart.

How to Evolve

2 Forms

#088Grimer

Level 38

#089Muk

Stat Comparison 2 Stages

Grimer

Poison

Muk

Poison

105+25

ATK

105+25

DEF

75+25

SP.ATK

65+25

SP.DEF

100+50

SPE

50+25

BST

325C-Tier

500B-Tier+175

ROLE

Trick Room

Tank

TYPE

Physical

Breeding not available · Introduced in Gen 2

Red & Blue Grimer Best Moveset

Best Build

Gen 1 build content has limited support (no abilities, held items, or natures).

Try selecting a different game/generation filter, or check back later.

Moves

TMs carry this one. Grimer learns Sludge naturally for STAB, but the offensive range comes almost entirely from technical machines. Normal and Fire and beyond give it real matchup play.

Level-Up Moves

Lv 1

Disable

——5520Normal

Lv 1

Pound

—4010035Normal

Lv 30

Poison Gas

——5540Poison

Lv 33

Minimize

———20Normal

Lv 37

Sludge

D6510020Poison

Lv 42

Harden

D——30Normal

Lv 48

Screech

D—8540Normal

Lv 55

Acid Armor

D——40Poison

TM Moves

TM34

Bide+1

———10Normal

TM08

Body Slam

C8510015Normal

TM32

Double Team

———15Normal

TM47

Explosion

B2501005Normal

TM38

Fire Blast

D120855Fire

TM21

Mega Drain

D4010010Grass

TM31

Mimic

———10Normal

TM20

Rage

—2010020Normal

TM44

Rest

C——10Psychic

TM36

Self-Destruct

B2001005Normal

TM50

Substitute

C——10Normal

TM25

Thunder

D1107010Electric

TM24

Thunderbolt

D9510015Electric

TM06

Toxic

C—9010Poison

Egg Moves

Grimer doesn't have any Egg moves

Tutor Moves

Grimer can't learn any Tutor moves

Red & Blue Grimer Locations

Grimer appears at high spawn rates across 8 spots in mid-game routes. Sort by Best below if you want the highest rate, or Earliest if you want the quickest access point in your playthrough.

Best Locations to Catch Grimer in Red & Blue

Grimer's encounter pool splits between Blue and Red. You've got 8 walking spots at Lv. 30-35 total, but your version determines which ones actually show up.

Pokémon Mansion - 1F

BlueGrass Lv.30-32 Building

40%Mid

Pokémon Mansion - 2F

BlueGrass Lv.30-34 Building

40%Mid

Pokémon Mansion - 1F

RedGrass Lv.30 Building

5%Mid

Pokémon Mansion - 2F

RedGrass Lv.30 Building

5%Mid

Pokémon Mansion - B1F

BlueGrass Lv.31-33 Building

50%Late

Pokémon Mansion - 3F

BlueGrass Lv.31-35 Building

30%Late

Pokémon Mansion - 3F

RedGrass Lv.34 Building

5%Late

Pokémon Mansion - B1F

RedGrass Lv.35 Building

5%Late

Grimer Guide

Grimer has 2 evolution paths: Muk at level 38 and Alolan Muk at level 38. Different conditions, different results.
Grimer has 2 evolution paths: Muk at level 38 and Alolan Muk at level 38. Different method for each one.
For Red & Blue, you can run Grimer through the first few routes without issues. 315 BST won't carry you far though. Get it to Muk as fast as you can.
Grimer is catchable in Red & Blue. Check the Locations section above for specific routes, encounter rates, and methods. It also appears in 18 other games across the series.

Game Availability

Since debuting in Red & Blue, Grimer has appeared in 19 titles over 10 generations. Along the way, it received an Alolan form in Generation 7, keeping it relevant across different competitive metas.

Click a game to view version-specific details

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Rhydon GroundRock	S
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 157-186%KO Dig 2x 126-149%KO View Rhydon builds →
Dugtrio Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 126-149%KO Dig 2x 102-120%KO View Dugtrio builds →
Sandslash Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 126-149%KO Dig 2x 102-120%KO View Sandslash builds →
Nidoqueen PoisonGround	C
Obtain MethodEvolve Nidorina (Celadon City Gift) TM Move Moves EarthquakeTM26 Damage vs Grimer Earthquake 2x 118-139%KO View Nidoqueen builds →
Nidoking PoisonGround	C
Obtain MethodEvolve Nidorino (Celadon City Gift) TM Move Moves EarthquakeTM26 Damage vs Grimer Earthquake 2x 128-151%KO View Nidoking builds →

Sandshrew Ground	C
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 80-96% View Sandshrew builds →
Geodude RockGround	C
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 86-102%KO View Geodude builds →
Abra Psychic	C
Upcoming Move Moves View Abra builds →
Paras BugGrass	D
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 54-64% View Paras builds →

Sandshrew Ground	C
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 80-96% View Sandshrew builds →
Geodude RockGround	C
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 86-102%KO View Geodude builds →
Abra Psychic	C
Upcoming Move Moves View Abra builds →
Paras BugGrass	D
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 54-64% View Paras builds →

Dugtrio Ground	C
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 100-118%KO View Dugtrio builds →
Onix RockGround	C
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 56-67% View Onix builds →
Sandshrew Ground	C
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 81-96% View Sandshrew builds →
Geodude RockGround	C
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 84-99% View Geodude builds →
Cubone Ground	D
Available Moves Moves DigTM28 Bone ClubLv. 1 Damage vs Grimer Dig 2x 60-70% Bone Club 2x 48-57% View Cubone builds →

Dugtrio Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 124-147%KO Dig 2x 99-117%KO View Dugtrio builds →
Onix RockGround	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 71-84% Dig 2x 56-66% View Onix builds →
Sandshrew Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 99-117%KO Dig 2x 81-96% View Sandshrew builds →
Geodude RockGround	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 104-123%KO Dig 2x 84-99% View Geodude builds →
Cubone Ground	D
Available Moves Moves EarthquakeTM26 DigTM28 Bone ClubLv. 1 Damage vs Grimer Earthquake 2x 76-90% Dig 2x 61-72% Bone Club 2x 51-60% View Cubone builds →

Slowbro WaterPsychic	B
Recommended Build Moves AmnesiaUtility RestRecovery SurfSTAB Thunder Wave Damage vs Grimer Surf 65-77% View Slowbro builds →
Golem RockGround	B
Recommended Build Moves EarthquakeSTAB Explosion Rock Slide Body Slam Damage vs Grimer Earthquake 2x 146-171%KO Explosion 121-142%KO Rock Slide 54-64% Body Slam 41-49% View Golem builds →
Pinsir Bug	B
Recommended Build Moves Swords Dance Hyper Beam Submission Bind Damage vs Grimer Hyper Beam 75-88% Submission 20-24% Bind 8-9% View Pinsir builds →