As a Poison-type, Muk fills a straightforward role. Only weak to Ground and Psychic. Known as the Sludge Pokémon. Known as the Sludge Pokemon. The stat spread favors raw physical power.
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.
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.
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.
Muk Weakness
AvgGround and Psychic-type 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.
- Dark and Steel types added — Fairy does not exist yet
- Moves are Physical or Special based on type, not per move
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.
How to Evolve
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.
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
Best Muk Moveset
- Sludge Bomb
- Explosion
- Curse
- Focus Punch
Recommended Teammates
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
TM Moves
Egg Moves
Tutor Moves
Can't catch Muk directly. Start with Grimer at solid rates from the locations below, then evolve at level 38. The 2-stage line from Grimer to Muk is where the leveling time goes.
How to Obtain Muk in Ruby & Sapphire
Step 1Catch GrimerEFFORTLESSFiery PathSapphireGrassLv.15-16CommonEarlyVolcanoCHALLENGINGFiery PathRubyGrassLv.14RareEarlyVolcano- Step 2Muk ✓
Muk works as a tank with 500 BST behind it. C-Tier on our list — a situational pick that fills a niche. That 105 base HP does the heavy lifting.
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. But the speed tells the real story — base 50 Speed is low. Priority moves or Trick Room are the way to go. Fits the tank role.
Muk appears in 19 games, including Yellow, Red & Blue, and Gold & Silver.
Available since Red & Blue, Muk appears in 19 games spanning 9 generations. Beyond its original form, it gained an Alolan form in Generation 7.
- Gen IY
Yellow - Gen IRBDebut
Red & Blue - Gen IIGS
Gold & Silver - Gen IIC
Crystal - Gen IIIRS
Ruby & Sapphire - Gen IIIFRLG
FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS
HeartGold & SoulSilver - Gen IVDP
Diamond & Pearl - Gen VBW
Black & White - Gen VB2W2
Black 2 & White 2 - Gen VIXY
X & Y - Gen VIORAS
Omega Ruby & Alpha Sapphire - Gen VIIUSUM
Ultra Sun & Ultra Moon - Gen VIISMAlolan
Sun & Moon - Gen VIILGPE
Let's Go Pikachu & Eevee - Gen VIIISwSh
Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP
Brilliant Diamond & Shining Pearl - Gen IXSV
Scarlet & Violet - Gen IXLZA
Legends: Z-A