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 Ruby & Sapphire, you can run Grimer through the first few routes without issues. 325 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 Ruby & Sapphire. 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 EV. Follows a medium-fast 1M XP curve.

Base Stats

Avg

HP80

Attack80

Defense50

Sp. Atk40

Sp. Def50

Speed25

Total325

Details

Catch Rate

Easy190 / 255

Growth Rate

Medium Fast1M XP

Height0.9 m

Weight30.0 kg

Base XP65

Abilities

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 TouchHANot in game

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

EV Yield

HP+1AtkDefSpASpDSpe

HP training source

Pokedex Entries

GRIMER’s sludgy and rubbery body can be forced through any opening, however small it may be. This POKéMON enters sewer pipes to drink filthy wastewater.

Grimer Weakness

Grimer is weak to Ground and Psychic. 4 resistances help offset the weaknesses. Just 2 weak spots to worry about, which keeps teambuilding straightforward.

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

Type ChartAvg

2Weak

4Resist

0Immune

Score0

Gen III Type Chart

Dark and Steel types added — Fairy does not exist yet
Moves are Physical or Special based on type, not per move

4xCritical

None

2xWeak

Ground Psychic

½xResist

Grass Fighting Poison Bug

¼xResist

None

0xImmune

None

STAB (1)

Grass

How to Beat Grimer in Ruby & Sapphire (Best Counters)

Geodude RockGround	C
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 84-99% View Geodude builds →
Trapinch Ground	C
Available Moves Moves DigTM28 Sand TombLv. 25 Damage vs Grimer Dig 2x 100-118%KO Sand Tomb 2x 46-54% View Trapinch builds →
Numel FireGround	D
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 67-80% View Numel builds →
Sandshrew Ground	D
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 81-96% View Sandshrew builds →
Baltoy GroundPsychic	D
Available Moves Moves PsychicTM29 DigTM28 PsybeamLv. 11 ConfusionLv. 1 Damage vs Grimer Psychic 2x 60-70% Dig 2x 54-64% Psybeam 2x 43-51% Confusion 2x 35-41% View Baltoy builds →

Ruby & Sapphire Evolution

One evolution ahead. Grimer grows into Muk through a straightforward two-stage chain. A decent partner pool for breeding via one egg group. Eggs are average hatch time. Evolving adds up to 175 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

Very Easy

Breed Grimer easily with 22 breeding partners from the Indeterminate egg group. Pass egg moves like Curse, Explosion, Haze and 4 more to offspring.

Egg Groups

Indeterminate

Gender

♂50.0%♀50.0%

Hatch Time

20 cycles·5,140 steps

Quick~5 min with Flame Body

Egg Moves

7moves

Breed With (best first)

Ruby & Sapphire Grimer Best Moveset

Best Build

No build content available for this Pokemon in Gen 3.

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

Moves

Breeding opens up real options for Grimer. Curse and Explosion come exclusively from egg moves, and they're worth the effort. The rest of the kit covers basics through Sludge Bomb and Sludge and coverage across 8 types.

Level-Up Moves

Lv 1

Poison Gas

——5540Poison

Lv 1

Pound

—4010035Normal

Lv 4

Harden

D——30Normal

Lv 8

Disable

——5520Normal

Lv 13

Sludge

—6510020Poison

Lv 19

Minimize

———20Normal

Lv 26

Screech

D—8540Normal

Lv 34

Acid Armor

———40Poison

Lv 43

Sludge Bomb

D9010010Poison

Lv 53

Memento

D—10010Dark

TM Moves

TM45

Attract

——10015Normal

TM28

Dig

—6010010Ground

TM32

Double Team

———15Normal

TM42

Facade

D7010020Normal

TM38

Fire Blast

D120855Fire

TM35

Flamethrower

D9510015Fire

TM21

Frustration

——10020Normal

TM19

Giga Drain

D751005Grass

TM10

Hidden Power

—6010015Normal

TM17

Protect+4

C——10Normal

TM18

Rain Dance

C——5Water

TM44

Rest

C——10Psychic

TM27

Return

D—10020Normal

TM39

Rock Tomb

—609510Rock

TM43

Secret Power

—7010020Normal

TM34

Shock Wave

—60—20Electric

TM36

Sludge Bomb

D9010010Poison

TM11

Sunny Day

C——5Fire

TM12

Taunt

C—10020Dark

TM46

Thief

D6010025Dark

TM25

Thunder

D1207010Electric

TM24

Thunderbolt

D9510015Electric

TM41

Torment

D—10015Dark

TM06

Toxic

C—8510Poison

Egg Moves

Egg

Curse

C——10Ghost

Egg

Explosion

B2501005Normal

Egg

Haze

D——30Ice

Egg

Imprison

———10Psychic

Egg

Lick

D2010030Ghost

Egg

Mean Look

D——5Normal

Egg

Shadow Punch

—60—20Ghost

Tutor Moves

Grimer can't learn any Tutor moves

Ruby & Sapphire Grimer Locations

Grimer is available from early-game routes onward at decent spawn rates. 2 encounter spots give you plenty of options. Grab one early and it'll be ready to evolve or train by mid-game.

Best Locations to Catch Grimer in Ruby & Sapphire

Fiery Path

SapphireGrass Lv.15-16 Volcano

25%Early

Fiery Path

RubyGrass Lv.14 Volcano

2%Early

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 Ruby & Sapphire, you can run Grimer through the first few routes without issues. 325 BST won't carry you far though. Get it to Muk as fast as you can.
Grimer is catchable in Ruby & Sapphire. 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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Ralts Psychic	D
Available Move Moves ConfusionLv. 6 Damage vs Grimer Confusion 2x 42-51% View Ralts builds →
Nincada BugGround	D
Upcoming Move Moves Mud-SlapLv. 31 Learns Mud-Slap at Level 31 View Nincada builds →

Geodude RockGround	C
Upcoming Move Moves EarthquakeLv. 36 Learns Earthquake at Level 36 View Geodude builds →
Abra Psychic	C
Upcoming Move Moves View Abra builds →
Ralts Psychic	D
Available Move Moves ConfusionLv. 6 Damage vs Grimer Confusion 2x 38-46% View Ralts builds →
Nincada BugGround	D
Upcoming Move Moves Mud-SlapLv. 31 Learns Mud-Slap at Level 31 View Nincada builds →

Geodude RockGround	C
Upcoming Move Moves EarthquakeLv. 36 Learns Earthquake at Level 36 View Geodude builds →
Abra Psychic	C
Upcoming Move Moves View Abra builds →
Ralts Psychic	D
Available Move Moves ConfusionLv. 6 Damage vs Grimer Confusion 2x 39-47% View Ralts builds →
Nincada BugGround	D
Upcoming Move Moves Mud-SlapLv. 31 Learns Mud-Slap at Level 31 View Nincada builds →

Rhyhorn GroundRock	C
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 89-105%KO View Rhyhorn builds →
Geodude RockGround	C
Available Moves Moves EarthquakeLv. 36 DigTM28 Damage vs Grimer Earthquake 2x 107-126%KO Dig 2x 85-100%KO View Geodude builds →
Numel FireGround	D
Available Moves Moves EarthquakeLv. 35 DigTM28 Damage vs Grimer Earthquake 2x 87-102%KO Dig 2x 68-81% View Numel builds →
Sandshrew Ground	D
TM Move Moves DigTM28 Damage vs Grimer Dig 2x 81-95% View Sandshrew builds →
Baltoy GroundPsychic	D
Available Moves Moves PsychicTM29 DigTM28 PsybeamLv. 11 ConfusionLv. 1 Damage vs Grimer Psychic 2x 58-69% Dig 2x 52-62% Psybeam 2x 44-52% Confusion 2x 34-40% View Baltoy builds →

Rhyhorn GroundRock	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 109-129%KO Dig 2x 88-104%KO View Rhyhorn builds →
Geodude RockGround	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 105-124%KO Dig 2x 84-100%KO View Geodude builds →
Phanpy Ground	D
TM Move Moves EarthquakeTM26 Damage vs Grimer Earthquake 2x 83-98% View Phanpy builds →
Numel FireGround	D
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 83-98% Dig 2x 67-80% View Numel builds →
Sandshrew Ground	D
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Grimer Earthquake 2x 100-118%KO Dig 2x 79-93% View Sandshrew builds →

Flygon GroundDragon	B
Recommended Build AbilityLevitate ItemLeftovers NatureImpish Moves EarthquakeSTAB Rock Slide ToxicUtility ProtectPriority Damage vs Grimer Earthquake 2x 124-147%KO Rock Slide 31-37% View Flygon builds →
Medicham FightingPsychic	C
Recommended Build AbilityPure Power ItemSalacberry NatureJolly Moves Shadow Ball Brick Break Rock Slide Focus Punch Damage vs Grimer Shadow Ball 31-37% Rock Slide 29-34% View Medicham builds →
Gardevoir PsychicFairy	C
Recommended Build AbilityTrace ItemLeftovers NatureTimid Moves PsychicSTAB Calm Mind Thunderbolt MementoUtility Damage vs Grimer Psychic 2x 136-159%KO Thunderbolt 45-53% View Gardevoir builds →