#088 GrimerAll 251 Pokémon#090 Shellder

Gengar’s Pokédex · Kanto · Generation I

#089 Muk

Poison

  • SpeciesSludge Pokémon
  • Japanese nameBetbeton
  • PronunciationMUCK
  • Height3′ 11″ 1.19 m
  • Weight66.0 lb 29.70 kg
  • Gender♂ 50% · ♀ 50%
Muk official artwork

PokédexWhere to findType matchupsMovesBreedingStats

Name meaning

Variation of MUCK (“mud” or “manure”)

Evolution

  1. GrimerLevel 38Muk
Muk in the original Gengar’s Pokédex
Muk as it appeared in the original Gengar’s Pokédex

Pokédex entries

RedBlue Thickly covered with a filthy, vile sludge. It is so toxic, even its footprints contain poison.
Yellow Smells so awful, it can cause fainting. Through degeneration, it lost its sense of smell.
Stadium Becomes indistinguishable if it hides in dirt. Touching its sludge-covered body causes horrible poisonings.
GoldStadium 2 They love to gather in smelly areas where sludge accumulates, making the stench around them worse.
Silver Its body is made of a powerful poison. Touching it accidentally will cause a fever that requires bed rest.
Crystal As it moves, a very strong poison leaks from it, making the ground there barren for three years.

Where to find Muk

Game Where to find it Time Rarity
Blue Cinnabar Island (Pokémon Mansion), Unknown Dungeon NA Few/Evolve
Red NA Few/Evolve
Yellow Power Planet, Cinnabar Island (In-Game Trade) NA Few/Evolve
Gold Celadon City, Routes 16, 17, 18 Any Few/Evolve; Many in Celadon
Silver Any Few/Evolve; Many in Celadon
Crystal Any Few/Evolve; Many in Celadon

How to catch

Ground Surf Fishing Forest Tree Mountain Tree Rock Smash Breed Evolve Event BugCatch Game Corner
R/B ✓ ✓
Yellow ✓ ✓ ✓
G/S ✓ ✓ ✓
Crystal ✓ ✓ ✓

✓ marks how you can get it in each game. Shaded boxes are methods that didn’t exist in that game.

Type matchups

Defence: damage taken from each attack type

  • Normal×1
  • Fire×1
  • Water×1
  • Electric×1
  • Grass×0.5
  • Ice×1
  • Fighting×0.5
  • Poison×0.5
  • Ground×2
  • Flying×1
  • Psychic×2
  • BugG/S/C ×0.5R/B/Y × 2
  • Rock×1
  • Ghost×1
  • Dragon×1
  • Dark×1
  • Steel×1
  • Gold, Silver & Crystal: 2 weaknesses and 4 resistances out of 17 types. Defence ratio 1 : 2 (50%).
  • Red, Blue & Yellow: 3 weaknesses and 3 resistances out of 15 types. Defence ratio 1 : 1 (100%).
  • This Pokémon has one less weakness and one more resistance in GSC than in RBY. So this Pokémon has a better defense ratio in GSC.

Offence: same-type attacks against each type

  • NormalNormal
  • FireNormal
  • WaterNormal
  • ElectricNormal
  • GrassGood
  • IceNormal
  • FightingNormal
  • PoisonBad
  • GroundBad
  • FlyingNormal
  • PsychicNormal
  • BugG/S/C NormalR/B/Y Good
  • RockBad
  • GhostBad
  • DragonNormal
  • DarkNormal
  • SteelNo Effect
  • Gold, Silver & Crystal: 1 advantage and 5 disadvantages out of 17 types. Offensive ratio 1:5 (20%).
  • Red, Blue & Yellow: 2 advantages and 4 disadvantages out of 15 types. Offensive ratio 1:2 (50%).

Moves learned by levelling up

Yellow R/B G/S/C Move Type Kind
30 Start Start Poison Gas Poison Status
Start Start Start Pound Normal Physical
45 45 33 Harden Normal Status
Start Start 37 Disable Normal Status
37 Start 45 Sludge Poison Physical
33 Start 45 Minimize Normal Status
53 53 45 Screech Normal Status
60 60 45 Acid Armor Poison Status
— — 60 Sludge Bomb Poison Physical

“Start” means it knows the move from level 1; a dash means it doesn’t learn the move by levelling up in that game.

Move Tutor Crystal

  • Flamethrower, Thunderbolt

TMs & HMs Gold, Silver & Crystal

  • TM01Dynamicpunch
  • TM03Curse
  • TM06Toxic
  • TM07Zap Cannon
  • TM10Hidden Power
  • TM11Sunny Day
  • TM13Snore
  • TM15Hyper Beam
  • TM17Protect
  • TM19Giga Drain
  • TM20Endure
  • TM21Frustration
  • TM25Thunder
  • TM27Return
  • TM32Double Team
  • TM33Ice Punch
  • TM34Swagger
  • TM35Sleep Talk
  • TM36Sludge Bomb
  • TM38Fire Blast
  • TM41Thunderpunch
  • TM44Rest
  • TM45Attract
  • TM46Thief
  • TM48Fire Punch

TMs & HMs Red, Blue & Yellow

  • TM06Toxic
  • TM08Body Slam
  • TM15Hyper Beam
  • TM20Rage
  • TM21Mega Drain
  • TM24Thunderbolt
  • TM25Thunder
  • TM31Mimic
  • TM32Double Team
  • TM34Bide
  • TM36Self Destruct
  • TM38Fire Blast
  • TM44Rest
  • TM47Explosion
  • TM50Substitute

Breeding Gold, Silver & Crystal

Egg groups Indeterminate Pokémon group 6

Compatible Pokémon

Egg moves

Move How to pass it down
Haze Mate with a male Koffing/Weezing.
Lick Mate with a male from Gastly Family.
Mean Look Mate with a male from Gastly Family, or Misdreavus.

Stats

Stat Base Range at Lv. 100 G/S/C rank R/B/Y rank
HP 105 383-413 10/4589.41% 7/4291.92%
Attack 105 278-308 7/4989.41% 7/4588.49%
Defense 75 218-248 22/5557.93% 19/4459.86%
Speed 50 168-198 34/4727.43% 31/4222.70%
Special Attack G/S/C 65 198-228 23/4648.01% —
Special Defense G/S/C 100 268-298 11/4187.46% —
Special R/B/Y 65 198-228 — 16/2944.05%
Total 500 G/S/C
400 R/B/Y
1513-1693
1245-1395
14/8781.59% 18/6574.19%

Ranges are the lowest and highest the stat can be at level 100. Ranks compare the base stat with every other Pokémon in those games (1 is the highest), with its percentile underneath.

Restored from Gengar’s Online Pokédex v4.2, one of the first Pokédexes on the web, created by Curtis Alumbaugh (Gengar) with Ian Alumbaugh (Haunter) and kept by Pokémon Dungeon. How to read this page · Red, Blue & Yellow moves · The Library