In Crystal, Muk works as a tank with 500 BST behind it. C-Tier on our list: a niche pick in Crystal's meta. Sludge Bomb with Leftovers is the standard set.

In Crystal, watch for Rhydon (Ground) and Alakazam (Psychic) when using Muk. They all hit it super-effectively with STAB. Only 2 weaknesses means fewer dedicated counters to worry about.

What role does Muk play in battle?

Muk is a physical attacker with base 105 Attack. Tanky enough to absorb a few hits, too. Speed tells the real story. Base 50 Speed is low. Priority moves or Trick Room are the way to go. Fits the tank role.

For Crystal, Muk has answers, but so do you. Status moves (Toxic, Will-O-Wisp) wear it down. Setup sweepers can use it as a boost opportunity. Special attackers bypass its physical bulk.

How do you use Muk in battle?

In Crystal, use Muk as a tank. Physical side carries the damage. Not the fastest, Set up with Curse when you get a free turn.

Muk - Weakness, Evolution, Moveset, EVs & Stats

Physical

Tank

CTier

50Speed · Slow

Stats & Training

Muk's built to absorb hits, not race for knockouts. Special bulk with HP doing the heavy lifting. And the medium-fast 1M XP curve means it won't take forever to bring up, worth 2 HP and Attack stat exp.

Base Stats

High

HP105

Attack105

Defense75

Sp. Atk65

Sp. Def100

Speed50

Total500

Details

Catch Rate

Challenging75 / 255

Growth Rate

Medium Fast1M XP

Height1.2 m

Weight30.0 kg

Base XP175

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+1Atk+1DefSpASpDSpe

HP training target

Pokedex Entries

As it moves, a very strong poison leaks from it, making the ground there barren for three years.

Crystal

Muk Weakness

Ground and Psychic moves hit Muk for super-effective damage. The Poison typing picks up 4 resistances to work with. Muk's special bulk (base 100 Sp.Def) helps absorb special-type weaknesses, though physical moves exploit the lower Defense.

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

Type ChartAvg

2Weak

4Resist

0Immune

Score0

Gen II Type Chart

Dark and Steel types added — Fairy does not exist yet
Moves are Physical or Special based on type, not per move
Special stat split into Sp.Atk and Sp.Def

4xCritical

None

2xWeak

Ground Psychic

½xResist

Grass Fighting Poison Bug

¼xResist

None

0xImmune

None

STAB (1)

Grass

How to Beat Muk in Crystal (Best Counters)

Donphan Ground	B
TM Move Moves Mud-SlapTM31 Damage vs Muk Mud-Slap 2x 21-25% View Donphan builds →
Quagsire WaterGround	C
Available Moves Moves DigTM28 Mud-SlapTM31 Damage vs Muk Dig 2x 55-66% Mud-Slap 2x 17-20% View Quagsire builds →
Graveler RockGround	C
Available Moves Moves DigTM28 Mud-SlapTM31 Damage vs Muk Dig 2x 61-73% Mud-Slap 2x 17-20% View Graveler builds →
Onix RockGround	C
Available Moves Moves DigTM28 Mud-SlapTM31 Damage vs Muk Dig 2x 36-43% Mud-Slap 2x 10-13% View Onix builds →
Cubone Ground	C
Obtain MethodGoldenrod City Gift Available Moves Moves DigTM28 Bone ClubLv. 9 BonemerangLv. 25 Mud-SlapTM31 Damage vs Muk Dig 2x 38-45% Bone Club 2x 32-38% Bonemerang 2x 25-30% Mud-Slap 2x 13-15% View Cubone builds →

Crystal Evolution

Muk is what Grimer becomes. Breed it for Grimer eggs (average hatch time). A small partner pool for breeding via one egg group. Eggs are average hatch time. The evolution from Grimer pushed Muk to 500 total stats. Sp.Def saw the largest single gain at +50. 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 with Muk to get Grimer eggs easily using 11 partners from the Indeterminate egg group. Notable egg moves include Haze, Lick, Mean Look.

Egg Groups

Indeterminate

Gender

♂50.0%♀50.0%

Hatch Time

20 cycles·5,140 steps

Quick~5 min with Flame Body

Egg Moves

3moves

Breed With (best first)

Crystal Muk Best Moveset

Best Build

Experimental

Utility

Ability

Not in Gen 2

Item

LeftoversSUSTAIN

Nature

Not in Gen 2

Utility Moveset

Sludge BombSTAB
ExplosionCoverage
CurseSetup
Fire Blast

Recommended Teammates

SnorlaxGood

CloysterGood

ZapdosDecent

Moves

Don't skip the egg moves. Muk picks up Haze and Lick only through breeding, and both fill gaps the natural movepool can't. STAB runs through Sludge Bomb and Sludge while coverage across 9 types adds range.

Level-Up Moves

Lv 1

Harden

———30Normal

Lv 1

Poison Gas

——5540Poison

Lv 1

Pound

—4010035Normal

Lv 23

Minimize

———20Normal

Lv 31

Screech

D—8540Normal

Lv 33

Harden

———30Normal

Lv 37

Disable

D—5520Normal

Lv 45

Acid Armor

D——40Poison

Lv 45

Sludge

—6510020Poison

Lv 60

Sludge Bomb

S9010010Poison

TM Moves

TM45

Attract

D—10015Normal

TM03

Curse

A——10Ghost

TM32

Double Team

———15Normal

TM01

Dynamic Punch

D100505Fighting

TM20

Endure+4

D——10Normal

TM38

Fire Blast

A120855Fire

TM48

Fire Punch

C7510015Fire

TM21

Frustration

D—10020Normal

TM19

Giga Drain

D751005Grass

TM10

Hidden Power

—6010015Normal

TM15

Hyper Beam

C150905Normal

TM33

Ice Punch

C7510015Ice

TM31

Mud-Slap

D2010010Ground

TM17

Protect+4

C——10Normal

TM44

Rest

C——10Psychic

TM27

Return

D—10020Normal

TM35

Sleep Talk

C——10Normal

TM36

Sludge Bomb

S9010010Poison

TM13

Snore

—4010015Normal

TM11

Sunny Day

C——5Fire

TM34

Swagger

C—8515Normal

TM46

Thief

C6010025Dark

TM25

Thunder

D1207010Electric

TM41

Thunder Punch

C7510015Electric

TM06

Toxic

C—8510Poison

TM07

Zap Cannon

D100505Electric

Egg Moves

Egg

Haze

C——30Ice

Egg

Lick

—2010030Ghost

Egg

Mean Look

D——5Normal

Tutor Moves

Tut

Tutor

Flamethrower

B9510015Fire

Tutor

Thunderbolt

D9510015Electric

How to Get Muk in Crystal

Muk starts showing up in early-game routes at moderate rates across 4 encounter spots. The list below is sorted so you can pick what fits your current progress without scrolling through everything.

Where To Catch Muk in Crystal

Grimer is your first catch on the way to Muk. You'll find walking and surfing encounters from Lv. 15-33 across 10 total spots in the chain.

Step 1Catch Grimer
Celadon City
Surfing on water Lv.15-24 City
90%Early
Route 17
Grass Lv.29-33 Route
95%Mid
Night
Route 17
Grass Lv.29-31 Route
55%Mid
Morning
Route 16
Grass Lv.26-28 Route
50%Mid
Route 18
Grass Lv.26-28 Route
50%Mid
Route 17
Grass Lv.29 Route
20%Mid
Day
Train until Level 38
Step 2Muk ✓
Celadon City
Surfing on water Lv.15-19 City
10%Early
Route 16
Grass Lv.30 Route
5%Mid
Route 18
Grass Lv.30 Route
5%Mid
Route 17
Grass Lv.33 Route
5%Late
or evolve from Grimer (Step 1)

Muk Guide

In Crystal, Muk works as a tank with 500 BST behind it. C-Tier on our list: a niche pick in Crystal's meta. Sludge Bomb with Leftovers is the standard set.
In Crystal, watch for Rhydon (Ground) and Alakazam (Psychic) when using Muk. They all hit it super-effectively with STAB. Only 2 weaknesses means fewer dedicated counters to worry about.
Muk is a physical attacker with base 105 Attack. Tanky enough to absorb a few hits, too. Speed tells the real story. Base 50 Speed is low. Priority moves or Trick Room are the way to go. Fits the tank role.
For Crystal, Muk has answers, but so do you. Status moves (Toxic, Will-O-Wisp) wear it down. Setup sweepers can use it as a boost opportunity. Special attackers bypass its physical bulk.
In Crystal, use Muk as a tank. Physical side carries the damage. Not the fastest, Set up with Curse when you get a free turn.

Game Availability

Available since Red & Blue, Muk appears in 19 games spanning 10 generations. Beyond its original form, it gained an Alolan form in Generation 7.

Click a game to view version-specific details

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Donphan Ground	B
Available Moves Moves EarthquakeLv. 49 Mud-SlapTM31 Damage vs Muk Earthquake 2x 93-110%KO Mud-Slap 2x 19-23% View Donphan builds →
Nidoking PoisonGround	B
TM Move Moves Mud-SlapTM31 Damage vs Muk Mud-Slap 2x 18-22% View Nidoking builds →
Quagsire WaterGround	C
Available Moves Moves EarthquakeLv. 35 DigTM28 Mud-SlapTM31 Damage vs Muk Earthquake 2x 71-83% Dig 2x 57-67% Mud-Slap 2x 16-18% View Quagsire builds →
Sandslash Ground	C
Available Moves Moves DigTM28 Mud-SlapTM31 Damage vs Muk Dig 2x 65-77% Mud-Slap 2x 18-22% View Sandslash builds →
Nidoqueen PoisonGround	C
TM Move Moves Mud-SlapTM31 Damage vs Muk Mud-Slap 2x 17-20% View Nidoqueen builds →

Celebi PsychicGrass	A
Obtain MethodIlex Forest Interact Encounter Available Moves Moves ConfusionLv. 1 Mud-SlapTM31 Damage vs Muk Confusion 2x 39-47% Mud-Slap 2x 13-16% View Celebi builds →
Quagsire WaterGround	C
TM Move Moves Mud-SlapTM31 Damage vs Muk Mud-Slap 2x 19-23% View Quagsire builds →
Onix RockGround	C
TM Move Moves Mud-SlapTM31 Damage vs Muk Mud-Slap 2x 16-19% View Onix builds →
Geodude RockGround	C
TM Move Moves Mud-SlapTM31 Damage vs Muk Mud-Slap 2x 19-23% View Geodude builds →
Sandshrew Ground	D
TM Move Moves Mud-SlapTM31 Damage vs Muk Mud-Slap 2x 19-23% View Sandshrew builds →

Quagsire WaterGround	C
TM Move Moves Mud-SlapTM31 Damage vs Muk Mud-Slap 2x 19-23% View Quagsire builds →
Onix RockGround	C
TM Move Moves Mud-SlapTM31 Damage vs Muk Mud-Slap 2x 13-15% View Onix builds →
Cubone Ground	C
Obtain MethodGoldenrod City Gift Available Moves Moves Bone ClubLv. 9 Mud-SlapTM31 Damage vs Muk Bone Club 2x 36-42% Mud-Slap 2x 15-19% View Cubone builds →
Geodude RockGround	C
TM Move Moves Mud-SlapTM31 Damage vs Muk Mud-Slap 2x 19-23% View Geodude builds →
Sandshrew Ground	D
TM Move Moves Mud-SlapTM31 Damage vs Muk Mud-Slap 2x 19-23% View Sandshrew builds →

Quagsire WaterGround	C
Available Moves Moves DigTM28 Mud-SlapTM31 Damage vs Muk Dig 2x 61-73% Mud-Slap 2x 18-22% View Quagsire builds →
Onix RockGround	C
Available Moves Moves DigTM28 Mud-SlapTM31 Damage vs Muk Dig 2x 40-47% Mud-Slap 2x 13-16% View Onix builds →
Cubone Ground	C
Obtain MethodGoldenrod City Gift Available Moves Moves DigTM28 Bone ClubLv. 9 BonemerangLv. 25 Mud-SlapTM31 Damage vs Muk Dig 2x 42-51% Bone Club 2x 35-41% Bonemerang 2x 26-32% Mud-Slap 2x 13-16% View Cubone builds →
Geodude RockGround	C
Available Moves Moves DigTM28 Mud-SlapTM31 Damage vs Muk Dig 2x 56-66% Mud-Slap 2x 16-19% View Geodude builds →
Sandshrew Ground	D
Available Moves Moves DigTM28 Mud-SlapTM31 Damage vs Muk Dig 2x 56-66% Mud-Slap 2x 16-19% View Sandshrew builds →

Quagsire WaterGround	C
Available Moves Moves DigTM28 Mud-SlapTM31 Damage vs Muk Dig 2x 57-68% Mud-Slap 2x 17-21% View Quagsire builds →
Graveler RockGround	C
Available Moves Moves DigTM28 Mud-SlapTM31 Damage vs Muk Dig 2x 62-73% Mud-Slap 2x 17-21% View Graveler builds →
Onix RockGround	C
Available Moves Moves DigTM28 Mud-SlapTM31 Damage vs Muk Dig 2x 37-44% Mud-Slap 2x 10-13% View Onix builds →
Cubone Ground	C
Obtain MethodGoldenrod City Gift Available Moves Moves DigTM28 Bone ClubLv. 9 BonemerangLv. 25 Mud-SlapTM31 Damage vs Muk Dig 2x 39-47% Bone Club 2x 33-39% Bonemerang 2x 26-31% Mud-Slap 2x 13-16% View Cubone builds →
Sandshrew Ground	D
Available Moves Moves DigTM28 Mud-SlapTM31 Damage vs Muk Dig 2x 53-63% Mud-Slap 2x 15-18% View Sandshrew builds →