In Yellow, Muk works as an attacker with 465 BST behind it. C-Tier on our list: a niche pick in Yellow's meta. Explosion anchors the moveset.

In Yellow, watch for Rhydon (Ground), Alakazam (Psychic), and Pinsir (Bug) when using Muk. They all hit it super-effectively with STAB.

What role does Muk play in battle?

Muk is a physical attacker with base 105 Attack. Enough bulk to take a hit or two, too. Speed tells the real story. Base 50 Speed is low. Priority moves or Trick Room are the way to go. Fits the attacker role.

What are the best moves for Muk?

In Yellow, run Explosion, Acidarmor, Sludge, and Body Slam on Muk. Explosion is the most common pick at 22% usage. Sludge provides reliable STAB damage.

For Yellow, Muk has answers, but so do you. Faster attackers outpace it. Anything with a super-effective STAB move and decent speed can revenge kill.

Muk - Weakness, Evolution, Moveset, EVs & Stats

Physical

Attacker

CTier

50Speed · Slow

Stats & Training

The stat line revolves around HP. Percentage recovery gets extra mileage here. Attack backs it up, though Speed doesn't pull its weight. Worth 2 HP and Attack stat exp on a medium-fast 1M XP curve to max out.

Base Stats

Above

HP105

Attack105

Defense75

Sp. Atk65

Sp. Def65

Speed50

Total465

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

Smells so awful, it can cause fainting. Through degeneration, it lost its sense of smell.

Yellow

Muk Weakness

Ground, Psychic, and Bug moves hit Muk for super-effective damage. With 105 HP and balanced defenses, Muk can afford to eat a neutral hit or two.

Muk 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 Muk in Yellow (Best Counters)

Dugtrio Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Muk Earthquake 2x 78-92% Dig 2x 63-74% View Dugtrio builds →
Marowak Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Bone ClubLv. 10 Damage vs Muk Earthquake 2x 64-76% Dig 2x 52-62% Bone Club 2x 43-51% View Marowak builds →
Onix RockGround	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Muk Earthquake 2x 43-51% Dig 2x 34-41% View Onix builds →
Rhyhorn GroundRock	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Muk Earthquake 2x 69-81% Dig 2x 55-65% View Rhyhorn builds →
Sandshrew Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Muk Earthquake 2x 63-74% Dig 2x 51-60% View Sandshrew builds →

Yellow Evolution

You get Muk from Grimer at level 38. This Poison type hits 465 total but remains in the Undiscovered group. The evolution from Grimer pushed Muk to 465 total stats. HP saw the largest single gain at +25. 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

Yellow Muk Best Moveset

Best Build

Experimental

Utility

Ability

Not in Gen 1

Item

Not in Gen 1

Nature

Not in Gen 1

Utility Moveset

ExplosionCoverage
Acid ArmorSTAB
SludgeSTAB
Body Slam

Recommended Teammates

SnorlaxGood

ExeggutorGood

GolemDecent

Moves

The level-up pool is slim, so TMs matter here. Muk's Normal and Fire coverage and more all comes from technical machines, built on top of Sludge for same-type damage. Explosion and Fire Blast are the payoff moves.

Level-Up Moves

Lv 1

Disable

——5520Normal

Lv 1

Poison Gas

——5540Poison

Lv 1

Pound

—4010035Normal

Lv 30

Poison Gas

——5540Poison

Lv 33

Minimize

———20Normal

Lv 37

Sludge

A6510020Poison

Lv 45

Harden

D——30Normal

Lv 53

Screech

D—8540Normal

Lv 60

Acid Armor

S——40Poison

TM Moves

TM34

Bide+1

———10Normal

TM08

Body Slam

A8510015Normal

TM32

Double Team

———15Normal

TM47

Explosion

S2501005Normal

TM38

Fire Blast

B120855Fire

TM15

Hyper Beam

A150905Normal

TM21

Mega Drain

B4010010Grass

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

Muk doesn't have any Egg moves

Tutor Moves

Muk can't learn any Tutor moves

How to Get Muk in Yellow

Muk appears at moderate rates across 5 spots in late-game routes. Sort by Best below if you want the highest rate, or Earliest if you want the quickest access point in your playthrough.

Where To Catch Muk in Yellow

Grimer is your first catch on the way to Muk. You'll find walking and trade encounters from Lv. 23-41 across 10 total spots in the chain.

Step 1Catch Grimer
Pokémon Mansion - 2F
Grass Lv.26-35 Building
35%Mid
Pokémon Mansion - 1F
Grass Lv.23-26 Building
20%Mid
Pokémon Mansion - B1F
Grass Lv.35-38 Building
40%Late
Pokémon Mansion - 3F
Grass Lv.32-38 Building
35%Late
Power Plant
Grass Lv.33-37 Power-plant
15%Late
Train until Level 38
Step 2Muk ✓
Pokémon Mansion - B1F
Grass Lv.41 Building
10%Late
Power Plant
Grass Lv.33-37 Power-plant
5%Late
Pokémon Mansion - 2F
Grass Lv.35-38 Building
5%Late
Pokémon Mansion - 3F
Grass Lv.38-41 Building
5%Late
Cinnabar Island
In-game trade Water
100%
Trade for (give Kangaskhan)
or evolve from Grimer (Step 1)

Muk Guide

In Yellow, Muk works as an attacker with 465 BST behind it. C-Tier on our list: a niche pick in Yellow's meta. Explosion anchors the moveset.
In Yellow, watch for Rhydon (Ground), Alakazam (Psychic), and Pinsir (Bug) when using Muk. They all hit it super-effectively with STAB.
Muk is a physical attacker with base 105 Attack. Enough bulk to take a hit or two, too. Speed tells the real story. Base 50 Speed is low. Priority moves or Trick Room are the way to go. Fits the attacker role.
In Yellow, run Explosion, Acidarmor, Sludge, and Body Slam on Muk. Explosion is the most common pick at 22% usage. Sludge provides reliable STAB damage.
For Yellow, Muk has answers, but so do you. Faster attackers outpace it. Anything with a super-effective STAB move and decent speed can revenge kill.

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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Rhydon GroundRock	S
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Muk Earthquake 2x 101-118%KO Dig 2x 81-95% View Rhydon builds →
Dugtrio Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Muk Earthquake 2x 81-95% Dig 2x 65-77% View Dugtrio builds →
Sandslash Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Muk Earthquake 2x 81-95% Dig 2x 65-77% View Sandslash builds →
Nidoqueen PoisonGround	C
TM Move Moves EarthquakeTM26 Damage vs Muk Earthquake 2x 75-88% View Nidoqueen builds →
Nidoking PoisonGround	C
TM Move Moves EarthquakeTM26 Damage vs Muk Earthquake 2x 82-97% View Nidoking builds →

Sandshrew Ground	C
TM Move Moves DigTM28 Damage vs Muk Dig 2x 52-63% View Sandshrew builds →
Geodude RockGround	C
TM Move Moves DigTM28 Damage vs Muk Dig 2x 57-67% View Geodude builds →
Abra Psychic	C
Upcoming Move Moves View Abra builds →
Paras BugGrass	D
TM Move Moves DigTM28 Damage vs Muk Dig 2x 34-42% View Paras builds →
Venonat BugPoison	D
Upcoming Move Moves ConfusionLv. 19 Learns Confusion at Level 19 View Venonat builds →

Sandshrew Ground	C
TM Move Moves DigTM28 Damage vs Muk Dig 2x 52-63% View Sandshrew builds →
Geodude RockGround	C
TM Move Moves DigTM28 Damage vs Muk Dig 2x 57-67% View Geodude builds →
Abra Psychic	C
Upcoming Move Moves View Abra builds →
Paras BugGrass	D
TM Move Moves DigTM28 Damage vs Muk Dig 2x 34-42% View Paras builds →
Venonat BugPoison	D
Upcoming Move Moves ConfusionLv. 19 Learns Confusion at Level 19 View Venonat builds →

Dugtrio Ground	C
TM Move Moves DigTM28 Damage vs Muk Dig 2x 63-75% View Dugtrio builds →
Onix RockGround	C
TM Move Moves DigTM28 Damage vs Muk Dig 2x 37-44% View Onix builds →
Sandshrew Ground	C
TM Move Moves DigTM28 Damage vs Muk Dig 2x 52-61% View Sandshrew builds →
Cubone Ground	D
Available Moves Moves DigTM28 Bone ClubLv. 10 Damage vs Muk Dig 2x 40-47% Bone Club 2x 32-39% View Cubone builds →
Venonat BugPoison	D
Available Moves Moves Leech LifeLv. 27 ConfusionLv. 19 Damage vs Muk Leech Life 2x 42-50% Confusion 2x 17-20% View Venonat builds →

Dugtrio Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Muk Earthquake 2x 79-94% Dig 2x 63-76% View Dugtrio builds →
Onix RockGround	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Muk Earthquake 2x 46-55% Dig 2x 37-44% View Onix builds →
Sandshrew Ground	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Muk Earthquake 2x 66-78% Dig 2x 53-63% View Sandshrew builds →
Geodude RockGround	C
Available Moves Moves EarthquakeTM26 DigTM28 Damage vs Muk Earthquake 2x 69-81% Dig 2x 55-65% View Geodude builds →
Cubone Ground	D
Available Moves Moves EarthquakeTM26 DigTM28 Bone ClubLv. 10 Damage vs Muk Earthquake 2x 49-57% Dig 2x 39-47% Bone Club 2x 33-39% View Cubone builds →