Is Muk Good in Ultra Sun & Ultra Moon Playthrough?
Poison/Dark Alolan Muk is built for the endgame. Ghost immunity wrecks Acerola's E4, Poison handles Mina's Fairy trial, and the sheer bulk absorbs hits from Hau's Title Defense team. One of the most reliable Pokemon for the last stretch of the story.
Grimer has the type edge here and should clean up Ilima's team.
Hala's team hits Grimer's weaknesses hard.
Muk trades roughly evenly with Lana's team.
ElectricSteelReceived as a Totem-sized gift Pokemon by collecting enou... (Ultra Moon only)
BugElectricReceived as a Totem-sized gift Pokemon by collecting enou... (Ultra Sun only)
GrassReceived as a Totem-sized gift Pokemon by collecting enou... (Ultra Sun only)
GhostFairyReceived as a Totem-sized gift Pokemon by collecting enou...
Kiawe's typing presses Grimer's defenses.
Grimer trades roughly evenly with Mallow's team.
Grimer trades roughly evenly with Olivia's team.
Sophocles's typing presses Grimer's defenses.
Grimer trades roughly evenly with Acerola's team.
Muk trades roughly evenly with Nanu's team.
Muk has the type edge here and should clean up Mina's team.
Hapu's team hits Muk's weaknesses hard.
Molayne's team hits Muk's weaknesses hard.
Muk trades roughly evenly with Olivia's team.
Muk trades roughly evenly with Acerola's team.
Muk trades roughly evenly with Kahili's team.
Muk trades roughly evenly with Kukui's team.
Catch Grimer on Route 1 (walking, Lv 5-8).
Your Grimer should hit Level 38 before you reach Lana, at typical leveling pace.
How to Get Muk in Ultra Sun & Ultra Moon
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 USUM
Grimer is your first catch on the way to Muk. You'll find walking encounters from Lv. 5-28 across 6 total spots in the chain.
Step 1Catch GrimerRoute 1 - Trainers' SchoolLv.5-8GrassRate 10%Hau'oli City - Shopping DistrictLv.6-9GrassRate 10%Malie City - Outer CapeLv.25-28GrassRate 30%
Step 2Muk ✓
Muk Weakness
Ground and Psychic moves hit Muk for super-effective damage. The Poison typing picks up 5 resistances to work with. Muk's special bulk (base 100 Sp.Def) helps absorb special-type weaknesses, though physical moves exploit the lower Defense.
| Damage | Types |
|---|---|
| 2x (Weak) | Ground, Psychic |
| 0.5x (Resist) | Grass, Fighting, Poison, Bug, Fairy |
What is Muk Weak Against
GoodBest Pokemon Against Muk
 Espeon Psychic | B | |
 Marowak Ground | C | |
Obtain MethodHeahea Beach Gift | ||
 Onix RockGround | C | |
 Oranguru NormalPsychic | C | |
Available Moves Moves
Damage vs Muk View Oranguru builds →Psyshock 2x50-60% Bulldoze 2x24-29% | ||
 Slowbro WaterPsychic | B | |
Available Moves Moves
Damage vs Muk View Slowbro builds →Psyshock 2x53-63% Bulldoze 2x27-32% | ||
 Solgaleo PsychicSteel | S | |
Obtain MethodMahalo Trail Gift Available Moves Moves
Damage vs Muk View Solgaleo builds →Psychic 2x63-74% Earthquake 2x70-82% | ||
 Mewtwo Psychic | S | |
Obtain MethodUltra Space Wilds Interact Encounter Available Moves Moves
Damage vs Muk View Mewtwo builds →Future Sight 2x109-129%KO Earthquake 2x58-68% | ||
Espeon Psychic | B | |
 Azelf Psychic | B | |
Obtain MethodUltra Space Wilds Interact Encounter | ||
 Gardevoir PsychicFairy | B | |
B | ||
Recommended Build AbilityAftermath ItemLightclay NatureJolly Moves
Damage vs Muk View Electrode builds →Explosion32-37% | ||
B | ||
Recommended Build AbilityLevitate ItemLeftovers NatureCalm Moves
Damage vs Muk View Cryogonal builds →Rapid Spin6-7% | ||
C | ||
Recommended Build AbilityNatural Cure ItemEviolite NatureCalm Moves
Damage vs Muk View Roselia builds →Sludge Bomb8-9% Giga Drain7-8% | ||
C | ||
Recommended Build AbilityContrary ItemLeftovers NatureBrave Moves
Damage vs Muk View Lurantis builds →Superpower19-22% Knock Off21-24% Leaf Storm9-11% | ||
D | ||
Recommended Build AbilityFriendguard ItemEviolite NatureImpish Moves View Clefairy builds →
| ||
Muk Evolutions
Muk is what Grimer becomes. Breed it for Grimer eggs (average hatch time). Plenty of partners 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
Breeding
Breed with Muk to get Grimer eggs easily using 52 partners from the Indeterminate egg group. Notable egg moves include Acid Spray, Curse, Haze and 10 more.
USUM Muk Best Moveset
105 Attack with 105 HP and 100 Sp. Def behind AbilityPoison Touch threatening poison on every contact move. The Alolan form shifts to Poison/Dark with AbilityPower Of Alchemy. But 50 Speed and Poison-only coverage in the base form leave the moveset too slow and predictable despite the bulk.
Best Build
Muk best EVs are HP and Attack
Physical Tank Moveset
- Gunk Shot
- Shadow Sneak
- Ice Punch
- Poison Jab
Recommended Teammates
Moves List
Coverage runs deep. Muk can hit 11 types beyond STAB, including Ground and Normal. The offense anchors on Gunk Shot and Belch while TMs handle everything else.
How to Read the Moves Table
Tabs
- Level-Up
- Learned by leveling up.
- TM
- Taught by a Technical Machine.
- Egg
- Inherited via breeding.
- Tutor
- NPC tutor (cost: items, BP, money).
- Reminder
- An NPC reteaches any move this Pokemon could have learned by leveling up.
- Transfer
- Carried over from an older game using Pokemon HOME.
- Event
- Given out through Mystery Gift events.
Visual Signals
CAT (Category)
How the move deals damage and which stats it uses.
A small dot on the icon's corner marks the move as contact. That triggers abilities like Static, Flame Body, Rough Skin, or Iron Barbs, plus items like Rocky Helmet and Sticky Barb.
Tier (S to D)
Each move's competitive rank in RankedBoost's system. TM, Egg, and Tutor sort by tier by default (best first). On Level-Up, click the Tier header to do the same.
PWR (Power)
Base damage. Numbers shown in a type color include STAB (base × 1.5). Hover any colored number to see the math.
— means no power (status moves) or variable power.
Sorting & Filter
Click any column header to sort. Level-Up opens with Lv 1 at the top. TM, Egg, and Tutor open with the highest-tier moves at the top.
Search filters by move name or type. The Filter button limits the list to STAB, Physical, Special, or Status moves.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Base Stats
Their food sources have decreased, and their numbers have declined sharply. Sludge ponds are being built to prevent their extinction.
Because they scatter germs everywhere, they’ve long been targeted for extermination, leading to a steep decline in their population.
Muk Ultra Sun & Ultra Moon Guide
In Ultra Sun & Ultra Moon, Muk works as a tank with 500 BST behind it. C-Tier on our list: a niche pick in Ultra Sun & Ultra Moon's meta. Gunkshot with Black Sludge is the standard set.
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 mixed attacker with base 105 Attack and 65 Sp. Atk. 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.
In Ultra Sun & Ultra Moon, run Gunkshot, Shadow Sneak, Icepunch, and Poisonjab on Muk. Gunkshot is the most common pick at 0% usage. This set covers the tank role with a mix of damage and utility.
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
- Gen 1RBDebut
Red & Blue - Gen 1Y
Yellow - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3E
Emerald - Gen 3FRLG
FireRed & LeafGreen - Gen 4DP
Diamond & Pearl - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7SMAlolan
Sun & Moon - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7LGPE
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 8PLA
Legends: Arceus - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves