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No. 0089

Muk

Sludge Pokémon

BaseAlolan
Muk official artwork
Official art

Muk is a Poison-type Pokémon, 2× weak to Ground and Psychic, with a base stat total of 500. It isn’t usable in Pokémon Champions’ Regulation M-C.

Poison
Height
1.2 m 3′11″
Weight
30 kg 66.1 lbs
Base stat total
500 Higher than 70% of Pokémon
Introduced
Gen I Red & Green (JP)
Abilities
Pokédex entryLet’s Go, Pikachu! / Let’s Go, Eevee!
Smells so awful, it can cause fainting. Through degeneration of its nose, it lost its sense of smell.
See all 16 entries

Base stats

HP105180–212320–414
Atk105112–172193–339
Def7585–139139–273
SpA6576–128121–251
SpD100108–167184–328
Spe5063–11294–218
Total500Higher than 70% of Pokémon
HP105Atk105Def75Spe50SpD100SpA65

Ranges in Pokémon Champions at Lv 50: 0 Stat Points with a −10% Stat Alignment to 32 Stat Points with a +10% one (HP has no alignment).Ranges in the main games at Lv 100: 0 IV/EV with a hindering nature to 31 IV/252 EV with a helpful nature. EV yield: 1 HP, 1 Atk.

Stat calculatorChampions Stat Points & Stat Alignment, or EVs, IVs & nature
Calculate damage →

Type matchups

Weak to

2×
GroundPsychic

Resists

½×
BugFairyFightingGrassPoison
Takes normal damage from 11 types
NormalFlyingRockGhostSteelFireWaterElectricIceDragonDark

Speed tiers

The faster Pokémon moves first each turn, so knowing who you outspeed decides a lot of battles. These are its Speed values at Lv 50 in Pokémon Champions (base Speed 50); Scarf and Tailwind use the Max+ value.

Max+112Max102No SP70Min63Scarf168Tailwind224

At max Speed, Muk outspeeds 11 of the 30 most used Pokémon in Champions VGC on Showdown.

Speed at Lv 50 in Pokémon Champions: Muk against the 30 most used Pokémon in Champions VGC on Showdown, fastest first
SpeedPokémon
203Mega Garchomp ZModest · 32 SP · #21 on Showdown
200Mega GengarTimid · 32 SP · #26 on Showdown
190Mega Raichu YTimid · 23 SP · #13 on Showdown
189Mega SalamenceTimid · 32 SP · #4 on Showdown
184WhimsicottTimid · 32 SP · #23 on Showdown
178Mega MetagrossJolly · 32 SP · #28 on Showdown
178Mega StaraptorJolly · 32 SP · #29 on Showdown
172SneaslerAdamant · 32 SP · #2 on Showdown
169Mega FloetteTimid · 32 SP · #17 on Showdown
169GarchompJolly · 32 SP · #19 on Showdown
167Mega Charizard YTimid · 32 SP · #14 on Showdown
167Mega GardevoirTimid · 32 SP · #20 on Showdown
161IndeedeeTimid · 32 SP · #30 on Showdown
156Hisuian ArcanineJolly · 32 SP · #16 on Showdown
150ArchaludonTimid · 32 SP · #9 on Showdown
149GholdengoTimid · 32 SP · #8 on Showdown
143BasculegionJolly · 32 SP · #6 on Showdown
128PelipperTimid · 32 SP · #12 on Showdown
120VolcaronaBold · 0 SP · #25 on Showdown
112Muk · Max+32 SP, Speed-raising alignment
105RillaboomAdamant · 0 SP · #1 on Showdown
102Muk · Max32 SP, neutral alignment
101MiloticCalm · 0 SP · #15 on Showdown
95SylveonModest · 15 SP · #18 on Showdown
94Female IndeedeeRelaxed · 0 SP · #7 on Showdown
90PolitoedCalm · 0 SP · #22 on Showdown
90SinistchaBold · 0 SP · #24 on Showdown
85ArmarougeQuiet · 0 SP · #27 on Showdown
80IncineroarCareful · 0 SP · #3 on Showdown
80FarigirafBold · 0 SP · #11 on Showdown
70Muk · No SP0 SP, neutral alignment
70KingambitAdamant · 0 SP · #5 on Showdown
60Mega GolisopodAdamant · 0 SP · #10 on Showdown

Smogon · Showdown Others at their most common Speed investment in Champions VGC (Reg M-C · Doubles, Sep 2026); Pokémon holding a Mega Stone are shown as their Mega.

Abilities

Competitive

Smogon · Showdown On Showdown

Sep 2026
Other Showdown formats Scarlet & Violet, with Tera
SV SinglesZUSV Doubles(DUU)National DexRU

0.2% of teams · rank #143 · Singles · 1630 weighting · 6,316 battles · Sep 2026

Most common build

Ability
Nature
Careful
EVs
252 HP / 4 Atk / 252 SpD
Tera Type
Ghost
  1. Poison Jab
  2. Knock Off
  3. Drain Punch
  4. Shadow Sneak

Each part is the most used on its own, so not every team runs this exact set.

Usage by rating

  • All games0.9%
  • 1500 weighting0.9%
  • 1630 weighting0.2%
  • 1760 weighting<0.1%

Usage by month

Oct 20250.2%

Moves

Items

Abilities

  • 91.1%
  • 8.9%
  • 0%

EV spreads

  • Careful 252 HP / 4 Atk / 252 SpD91.4%
  • Careful 252 HP / 4 Def / 252 SpD8.5%
  • Adamant 252 HP / 252 Atk / 4 SpD0.1%
  • Adamant 196 HP / 232 Atk / 80 SpD0%
  • Adamant 196 HP / 176 Atk / 136 SpD0%

Tera types

  • Ghost91.0%
  • Dark8.9%
  • Poison0.1%

Common teammates

Evolution

  1. #0088GrimerPoison
    1. Level 38
      #0089MukPoison

Moves

Level up 16

1HardenRaises the user's Defense by 1.NormalStatus——30
1Mud-Slap100% chance to lower the target's accuracy by 1.GroundSpec20100%10
1Poison GasPoisons the foe(s).PoisonStatus—90%40
1PoundNo additional effect.NormalPhys40100%35
12DisableFor 4 turns, disables the target's last move used.NormalStatus—100%20
15Sludge30% chance to poison the target.PoisonSpec65100%20
18Mud Shot100% chance to lower the target's Speed by 1.GroundSpec5595%15
21MinimizeRaises the user's evasiveness by 2.NormalStatus——10
26ToxicBadly poisons the target. Poison types can't miss.PoisonStatus—90%10
29Sludge Bomb30% chance to poison the target.PoisonSpec90100%10
32Sludge Wave10% chance to poison adjacent Pokémon.PoisonSpec95100%10
37ScreechLowers the target's Defense by 2.NormalStatus—85%40
40Gunk Shot30% chance to poison the target.PoisonPhys12080%5
46Acid ArmorRaises the user's Defense by 2.PoisonStatus——20
52BelchCannot be selected until the user eats a Berry.PoisonSpec12090%10
57MementoLowers target's Attack, Sp. Atk by 2. User faints.DarkStatus—100%10

TM / HM / TR 59

TM01Take DownHas 1/4 recoil.NormalPhys9085%20
TM05Mud-Slap100% chance to lower the target's accuracy by 1.GroundSpec20100%10
TM06Scary FaceLowers the target's Speed by 2.NormalStatus—100%10
TM07ProtectPrevents moves from affecting the user this turn.NormalStatus——10
TM13Acid Spray100% chance to lower the target's Sp. Def by 2.PoisonSpec40100%20
TM17Confuse RayConfuses the target.GhostStatus—100%10
TM18ThiefIf the user has no item, it steals the target's.DarkPhys60100%25
TM25FacadePower doubles if user is burn/poison/paralyzed.NormalPhys70100%20
TM29HexPower doubles if the target has a status ailment.GhostSpec65100%10
TM32SwiftThis move does not check accuracy. Hits foes.NormalSpec60—20
TM35Mud Shot100% chance to lower the target's Speed by 1.GroundSpec5595%15
TM36Rock Tomb100% chance to lower the target's Speed by 1.RockPhys6095%15
TM43FlingFlings the user's item at the target. Power varies.DarkPhys—100%10
TM45VenoshockPower doubles if the target is poisoned.PoisonSpec65100%10
TM47EndureUser survives attacks this turn with at least 1 HP.NormalStatus——10
TM49Sunny DayFor 5 turns, intense sunlight powers Fire moves.FireStatus——5
TM50Rain DanceFor 5 turns, heavy rain powers Water moves.WaterStatus——5
TM51SandstormFor 5 turns, a sandstorm rages. Rock: 1.5× SpD.RockStatus——10
TM55DigDigs underground turn 1, strikes turn 2.GroundPhys80100%10
TM58Brick BreakDestroys screens, unless the target is immune.FightingPhys75100%15
TM59Zen Headbutt20% chance to make the target flinch.PsychicPhys8090%15
TM66Body Slam30% chance to paralyze the target.NormalPhys85100%15
TM67Fire Punch10% chance to burn the target.FirePhys75100%15
TM68Thunder Punch10% chance to paralyze the target.ElectricPhys75100%15
TM69Ice Punch10% chance to freeze the target.IcePhys75100%15
TM70Sleep TalkUser must be asleep. Uses another known move.NormalStatus——10
TM73Drain PunchUser recovers 50% of the damage dealt.FightingPhys75100%10
TM80MetronomePicks a random move.NormalStatus——10
TM83Poison Jab30% chance to poison the target.PoisonPhys80100%20
TM85RestUser sleeps 2 turns and restores HP and status.PsychicStatus——5
TM86Rock Slide30% chance to make the foe(s) flinch.RockPhys7590%10
TM87TauntTarget can't use status moves its next 3 turns.DarkStatus—100%20
TM91Toxic SpikesPoisons grounded foes on switch-in. Max 2 layers.PoisonStatus——20
TM92ImprisonNo foe can use any move known by the user.PsychicStatus——10
TM94Dark Pulse20% chance to make the target flinch.DarkSpec80100%15
TM102Gunk Shot30% chance to poison the target.PoisonPhys12080%5
TM103SubstituteUser takes 1/4 its max HP to put in a substitute.NormalStatus——10
TM111Giga DrainUser recovers 50% of the damage dealt.GrassSpec75100%10
TM114Shadow Ball20% chance to lower the target's Sp. Def by 1.GhostSpec80100%15
TM125Flamethrower10% chance to burn the target.FireSpec90100%15
TM126Thunderbolt10% chance to paralyze the target.ElectricSpec90100%15
TM130Helping HandOne adjacent ally's move power is 1.5× this turn.NormalStatus——20
TM141Fire Blast10% chance to burn the target.FireSpec11085%5
TM148Sludge Bomb30% chance to poison the target.PoisonSpec90100%10
TM152Giga ImpactUser cannot move next turn.NormalPhys15090%5
TM158Focus Blast10% chance to lower the target's Sp. Def by 1.FightingSpec12070%5
TM163Hyper BeamUser cannot move next turn.NormalSpec15090%5
TM166Thunder30% chance to paralyze. Can't miss in rain.ElectricSpec11070%10
TM171Tera BlastIf Terastallized: Phys. if Atk > SpA, type = Tera.NormalSpec80100%10
TM174HazeEliminates all stat changes.IceStatus——30
TM175ToxicBadly poisons the target. Poison types can't miss.PoisonStatus—90%10
TM177SpiteLowers the PP of the target's last move by 4.GhostStatus—100%10
TM181Knock Off1.5× damage if foe holds an item. Removes item.DarkPhys65100%20
TM185Lunge100% chance to lower the target's Attack by 1.BugPhys80100%15
TM192Focus PunchFails if the user takes damage before it hits.FightingPhys150100%20
TM199Lash Out2× power if the user had a stat lowered this turn.DarkPhys75100%5
TM202Pain SplitShares HP of user and target equally.NormalStatus——20
TM214Sludge Wave10% chance to poison adjacent Pokémon.PoisonSpec95100%10
TM224CurseCurses if Ghost, else -1 Spe, +1 Atk, +1 Def.GhostStatus——10

Biology

Muk is covered in a toxic filthy sludge so vile that any land it walks through becomes inhospitable for up to three years. A drop of its body fluid can turn a pool rancid or leave a person bedridden for days. Its nose has devolved, so it cannot smell anything.

It feeds on anything repugnant and filthy, like sewer water. Its numbers have started declining since people have begun cleaning up towns, and because some people think it may go extinct, sludge pools are being built to prevent this.

Design & origin

Muk is based on the dorotabō, a one-eyed, three-fingered yōkai that rises from the mud of neglected, overgrown rice fields.

Adapted from Wikipedia: List of generation VII Pokémon · CC BY-SA 4.0 · edited.

Polls & views

Each line is one source, as it published it. Polls counted every form under its species.

Pokédex entries

Sludge Pokémon
Kanto · Red & Green (JP)
Color
Purple
Urban
Pal Park area
Field
Kanto#089Original Johto#117Original Hoenn#107Updated Johto#118Updated Unova#065New Hoenn#112Original Alola#051Original Melemele#051Original Ula’ula#029Updated Alola#058Updated Melemele#058Updated Ula’ula#029Let’s Go Kanto#089Paldea#195Blueberry#069

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

    Let’s Go, Pikachu! · Let’s Go, Eevee!

  2. Because they scatter germs everywhere, they’ve long been targeted for extermination, leading to a steep decline in their population.

    Ultra Moon

  3. Their food sources have decreased, and their numbers have declined sharply. Sludge ponds are being built to prevent their extinction.

    Ultra Sun

  4. After recent environmental improvements, this Pokémon is now hardly seen at all. People speculate that it may go extinct at some point.

    Moon

  5. The stench it gives off will make your nose scrunch up. Still, there are Muk fans who think that’s a good thing.

    Sun

  6. It’s so stinky! Muk’s body contains toxic elements, and any plant will wilt when it passes by.

    Black 2 · White 2

  7. A toxic fluid seeps from its body. The fluid instantly kills plants and trees on contact.

    Diamond · Pearl · Platinum · Black · White · Y

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

    FireRed

  9. It prefers warm and humid habitats. In the summertime, the toxic substances in its body intensify, making MUK reek like putrid kitchen garbage.

    Emerald

  10. This Pokémon’s favorite food is anything that is repugnantly filthy. In dirty towns where people think nothing of throwing away litter on the streets, MUK are certain to gather.

    Sapphire · Alpha Sapphire

  11. From MUK’s body seeps a foul fluid that gives off a nose-bendingly horrible stench. Just one drop of this Pokémon’s body fluid can turn a pool stagnant and rancid.

    Ruby · Omega Ruby

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

    Crystal

  13. Its body is made of a powerful poison. Touching it accidentally will cause a fever that requires bed rest.

    Silver · SoulSilver

  14. They love to gather in smelly areas where sludge ac­ cumulates, making the stench around them worse.

    Gold · HeartGold · X

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

    Yellow

  16. Thickly covered with a filthy, vile sludge. It is so toxic, even its footprints contain poison.

    Red · Blue · LeafGreen

Names around the world

English
Muk
Japanese
ベトベトン
Japanese (romaji)
Betbeton
Korean
질뻐기
Chinese (Traditional)
臭臭泥
Chinese (Simplified)
臭臭泥
French
Grotadmorv
German
Sleimok
Spanish
Muk
Italian
Muk

Sprites

Artwork and 3D models

Gen IX · Gen VIII · Gen VII · Gen VI · Gen V

Generation IV

Generation III

Generation II

Generation I

Training

1 HP, 1 Atk
75 ≈9.8% with a Poké Ball at full HP
70
175
Medium

Breeding

Amorphous
♂ 50%♀ 50%
20 egg cycles ≈5,355 steps (Gen IV–VII)

Where to find

Evolves from Grimer: Level 38.

Green 4 areas
  • Pokemon Mansion (1F)Walking in tall grass or a cave · Lv 37
  • Pokemon Mansion (2F)Walking in tall grass or a cave · Lv 39
  • Pokemon Mansion (3F)Walking in tall grass or a cave · Lv 38–40
  • Pokemon Mansion (B1F)Walking in tall grass or a cave · Lv 40
Red 4 areas
  • Pokemon Mansion (1F)Walking in tall grass or a cave · Lv 39
  • Pokemon Mansion (2F)Walking in tall grass or a cave · Lv 37
  • Pokemon Mansion (3F)Walking in tall grass or a cave · Lv 42
  • Pokemon Mansion (B1F)Walking in tall grass or a cave · Lv 42
Let’s Go, Pikachu! 5 areas
  • Pokemon Mansion (1F)Walking in the overworld · Lv 39–44
  • Pokemon Mansion (2F)Walking in the overworld · Lv 39–44
  • Pokemon Mansion (3F)Walking in the overworld · Lv 39–44
  • Pokemon Mansion (B1F)Walking in the overworld · Lv 39–44
  • Power PlantWalking in the overworld · Lv 37–42
Y 1 area
  • Friend Safari (Poison)Walking in tall grass or a cave · Lv 30
X 1 area
  • Friend Safari (Poison)Walking in tall grass or a cave · Lv 30
White 2 4 areas
  • Castelia SewersFishing in dark spots, Surfing in dark spots · Lv 5–70
  • Castelia Sewers (unknown area 38)Fishing in dark spots, Surfing in dark spots · Lv 5–70
  • Road 9Walking in dark grass, Walking in tall grass or a cave · Lv 40–44
  • Route 9 (Hidden Grotto)Finding a Pokemon in a Hidden Grotto · Lv 35–39
Black 2 4 areas
  • Castelia SewersFishing in dark spots, Surfing in dark spots · Lv 5–70
  • Castelia Sewers (unknown area 38)Fishing in dark spots, Surfing in dark spots · Lv 5–70
  • Road 9Walking in dark grass, Walking in tall grass or a cave · Lv 40–44
  • Route 9 (Hidden Grotto)Finding a Pokemon in a Hidden Grotto · Lv 35–39
SoulSilver 5 areas
  • Celadon CitySurfing · Lv 15
  • Road 16Walking in tall grass or a cave · Lv 30
  • Road 17Walking in tall grass or a cave · Lv 30–32
  • Road 18Walking in tall grass or a cave · Lv 29–30
  • Safari Zone MarshlandSurfing, Walking in tall grass or a cave · Lv 38–48
HeartGold 5 areas
  • Celadon CitySurfing · Lv 15
  • Road 16Walking in tall grass or a cave · Lv 30
  • Road 17Walking in tall grass or a cave · Lv 30–32
  • Road 18Walking in tall grass or a cave · Lv 29–30
  • Safari Zone MarshlandSurfing, Walking in tall grass or a cave · Lv 38–48
LeafGreen 4 areas
  • Pokemon Mansion (1F)Walking in tall grass or a cave · Lv 32
  • Pokemon Mansion (2F)Walking in tall grass or a cave · Lv 32
  • Pokemon Mansion (3F)Walking in tall grass or a cave · Lv 32
  • Pokemon Mansion (B1F)Walking in tall grass or a cave · Lv 34
Crystal 4 areas
  • Celadon CitySurfing · Lv 15–19
  • Road 16Walking in tall grass or a cave · Lv 30
  • Road 17Walking in tall grass or a cave · Lv 33
  • Road 18Walking in tall grass or a cave · Lv 30
Silver 4 areas
  • Celadon CitySurfing · Lv 15–19
  • Road 16Walking in tall grass or a cave · Lv 30
  • Road 17Walking in tall grass or a cave · Lv 30–32
  • Road 18Walking in tall grass or a cave · Lv 30
Gold 4 areas
  • Celadon CitySurfing · Lv 15–19
  • Road 16Walking in tall grass or a cave · Lv 30
  • Road 17Walking in tall grass or a cave · Lv 30–32
  • Road 18Walking in tall grass or a cave · Lv 30
Yellow 5 areas
  • Cinnabar Lab (Cinnabar Island)Trade with an NPC · Lv 28–100
  • Pokemon Mansion (2F)Walking in tall grass or a cave · Lv 35–38
  • Pokemon Mansion (3F)Walking in tall grass or a cave · Lv 38–41
  • Pokemon Mansion (B1F)Walking in tall grass or a cave · Lv 41
  • Power PlantWalking in tall grass or a cave · Lv 33–37
Blue 4 areas
  • Pokemon Mansion (1F)Walking in tall grass or a cave · Lv 37
  • Pokemon Mansion (2F)Walking in tall grass or a cave · Lv 39
  • Pokemon Mansion (3F)Walking in tall grass or a cave · Lv 38–40
  • Pokemon Mansion (B1F)Walking in tall grass or a cave · Lv 40
Red 4 areas
  • Pokemon Mansion (1F)Walking in tall grass or a cave · Lv 39
  • Pokemon Mansion (2F)Walking in tall grass or a cave · Lv 37
  • Pokemon Mansion (3F)Walking in tall grass or a cave · Lv 42
  • Pokemon Mansion (B1F)Walking in tall grass or a cave · Lv 42

Locations cover Red & Blue to Sword & Shield (with its DLC) and Let’s Go. We don’t have them yet for Legends: Arceus, Brilliant Diamond & Shining Pearl, Scarlet & Violet and Legends: Z-A.