Physical
Tank
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 EVs.

Base Stats
High
HP105
B
Attack105
B
Defense75
C
Sp. Atk65
C
Sp. Def100
B
Speed50
D
Total500
Details
Catch Rate
Challenging75 / 255
Growth Rate
Medium Fast1M XP
Height1.2 m
Weight30.0 kg
Base XP175
Abilities
StenchRare
Has a 10% chance of making target Pokémon flinch with each hit.
Sticky HoldTop Pick
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+1Atk+1DefSpASpDSpe
HP training target
Pokedex Entries

It is usually undetectable because it blends in with the ground. Touching it can cause terrible poisoning.

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
DamageTypes
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
¼xResist
None
0xImmune
None
STAB (1)
How to Beat Muk in FireRed & LeafGreen (Best Counters)
Dugtrio
Dugtrio
Ground
A
Available Moves
Moves
  • EarthquakeTM26
  • DigTM28
  • Sand TombLv. 26
  • Mud-SlapLv. 25
Damage vs Muk
Earthquake 2x
78-92%
Dig 2x
63-74%
Sand Tomb 2x
28-34%
Mud-Slap 2x
18-21%
View Dugtrio builds →

FireRed & LeafGreen Evolution

Muk is what Grimer becomes. Breed it for Grimer eggs (average hatch time). A decent 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
Stat Comparison 2 Stages
Grimer
Poison
Muk
Poison
HP
80
105+25
ATK
80
105+25
DEF
50
75+25
SP.ATK
40
65+25
SP.DEF
50
100+50
SPE
25
50+25
BST
325C-Tier
500B-Tier+175
ROLE
Trick Room
Tank
TYPE
Physical
Physical

Breeding

Very Easy

Breed with Muk to get Grimer eggs easily using 22 partners from the Indeterminate egg group. Notable egg moves include Curse, Explosion, Haze and 4 more.

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)
gardevoirkirliacastformraltsgengarweezingswalotmagcargohaunterwobbuffetkoffinggrimer

FireRed & LeafGreen Muk Best Moveset

Stickyhold helps Muk stick around while dealing real damage. Leftovers for passive recovery each turn, max HP and Attack EVs for the right balance, and Sludge Bomb as the main threat. Not the fastest, but it doesn't need to be.

Best Build

Solid pick
Physical Tank
Ability
Sticky Hold
Item
LeftoversSUSTAIN
Best Nature for Muk

Muk best EVs are HP and Attack

EVs

Physical Tank Moveset

  • Sludge BombSTAB
  • ExplosionCoverage
  • CurseSetup
  • Focus Punch

Moves

Don't skip the egg moves. Muk picks up Curse and Explosion 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
D30Normal
Lv 1
Poison Gas
5540Poison
Lv 1
Pound
4010035Normal
Lv 4
Harden
D30Normal
Lv 8
Disable
5520Normal
Lv 13
Sludge
6510020Poison
Lv 19
Minimize
20Normal
Lv 26
Screech
D8540Normal
Lv 34
Acid Armor
40Poison
Lv 47
Sludge Bomb
S9010010Poison
Lv 61
Memento
D10010Dark

TM Moves

TM
TM45
Attract
10015Normal
TM31
Brick Break
B7510015Fighting
TM28
Dig
6010010Ground
TM32
Double Team
15Normal
TM42
Facade
C7010020Normal
TM38
Fire Blast
C120855Fire
TM35
Flamethrower
D9510015Fire
TM01
Focus Punch-3
A15010020Fighting
TM21
Frustration
10020Normal
TM19
Giga Drain
D751005Grass
TM10
Hidden Power
6010015Normal
TM15
Hyper Beam
C150905Normal
TM17
Protect+4
C10Normal
TM18
Rain Dance
C5Water
TM44
Rest
C10Psychic
TM27
Return
D10020Normal
HM06
Rock Smash
2010015Fighting
TM39
Rock Tomb
609510Rock
TM43
Secret Power
7010020Normal
TM34
Shock Wave
6020Electric
TM36
Sludge Bomb
S9010010Poison
HM04
Strength
8010015Normal
TM11
Sunny Day
C5Fire
TM12
Taunt
C10020Dark
TM46
Thief
C6010025Dark
TM25
Thunder
D1207010Electric
TM24
Thunderbolt
D9510015Electric
TM41
Torment
D10015Dark
TM06
Toxic
C8510Poison

Egg Moves

Egg
Egg
Curse
A10Ghost
Egg
Explosion
S2501005Normal
Egg
Haze
D30Ice
Egg
Imprison
10Psychic
Egg
Lick
D2010030Ghost
Egg
Mean Look
D5Normal
Egg
Shadow Punch
6020Ghost

Tutor Moves

Tut
Tutor
Body Slam
C8510015Normal
Tutor
Explosion
S2501005Normal
Tutor
Mimic
10Normal
Tutor
Substitute
B10Normal

How to Get Muk in FireRed & LeafGreen

moderate rates across 2 encounter spots for Muk. That's the kind of hunt where you pick one location and settle in. Sort by Best below to see where the odds are highest.

Where To Catch Muk in FireRed & LeafGreen

The path to Muk starts with Grimer at Lv. 28-40 via walking and fishing encounters. 2 catchable stages total, with locations listed for each one below.

  1. Grimer
    Step 1Catch Grimer
    Pokémon Mansion - 1F/2F/3F
    LeafGreenGrass Lv.28-30 Building
    CommonMid
    Pokémon Mansion - B1F
    LeafGreenGrass Lv.28-30 Building
    CommonMid
    Pokémon Mansion - 1F/2F/3F
    FireRedGrass Lv.28 Building
    RareMid
    Pokémon Mansion - B1F
    FireRedGrass Lv.28 Building
    RareMid
    Celadon City
    FireRedSuper Rod Lv.30-40 City
    1%Mid
    Celadon City
    LeafGreenSuper Rod Lv.30-40 City
    1%Mid
  2. Muk
    Step 2Muk
    Pokémon Mansion - 1F/2F/3F
    Grass Lv.32 Building
    RareLate
    Pokémon Mansion - B1F
    Grass Lv.34 Building
    RareLate
    or evolve from Grimer (Step 1)

Muk Guide

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

  • In FireRed & LeafGreen, 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.

  • Stench has a 10% chance of making target Pokémon flinch with each hit. That's the one you want on Muk. Poison Touch is the hidden ability. Niche, but it has its uses. Sticky Hold works too if your team needs something different.

  • 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 FireRed & LeafGreen, 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.

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.

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