
| Id | 89 | 
| Type | poison | 
| Species | Sludge Pokémon | 
| Height | 1.2 m | 
| Weight | 30 kg | 
| Abilities | Stench, Sticky Hold Hidden Ability: Poison Touch | 
| Local Ids | 89 (Red/Blue/Yellow) 117 (Gold/Silver/Crystal) 107 (Ruby/Sapphire/Emerald) 89 (FireRed/LeafGreen) 118 (HeartGold/SoulSilver) 65 (Black 2/White 2) 112 (Omega Ruby/Alpha Sapphire) 51 (Sun/Moon — Alola dex) 58 (U.Sun/U.Moon — Alola dex) 89 (Let's Go Pikachu/Let's Go Eevee) | 
| Catch rate | 75 | 
| Base Friendship | 50 (normal) | 
| Base Exp | 175 | 
| Growth Rate | Medium Fast | 
| Egg Groups | Amorphous | 
| Gender | 50% male, 50% female | 
| Egg cycles | 20 (4,884–5,140 steps) | 
| HP | 105 | |
| Attack | 105 | |
| Defense | 75 | |
| Sp. Atk | 65 | |
| Sp. Def | 100 | |
| Speed | 50 | |
| Total | 500 | 
| Level | Move | Type | Category | Power | Accuracy | 
|---|---|---|---|---|---|
| 1 | Harden | normal | status | 0 | — | 
| 1 | Mud-Slap | ground | special | 20 | 100 | 
| 1 | Poison Gas | poison | status | 0 | 90 | 
| 1 | Pound | normal | physical | 40 | 100 | 
| 1 | Venom Drench | poison | status | 0 | 100 | 
| 4 | Harden | normal | status | 0 | — | 
| 7 | Mud-Slap | ground | special | 20 | 100 | 
| 12 | Disable | normal | status | 0 | 100 | 
| 15 | Sludge | poison | special | 65 | 100 | 
| 18 | Smog | poison | special | 30 | 70 | 
| 21 | Minimize | normal | status | 0 | — | 
| 26 | Fling | dark | physical | 0 | 100 | 
| 29 | Sludge Bomb | poison | special | 90 | 100 | 
| 32 | Sludge Wave | poison | special | 95 | 100 | 
| 37 | Screech | normal | status | 0 | 85 | 
| 40 | Gunk Shot | poison | physical | 120 | 80 | 
| 46 | Acid Armor | poison | status | 0 | — | 
| 52 | Belch | poison | special | 120 | 90 | 
| 57 | Memento | dark | status | 0 | 100 | 
| Move | Type | Category | Power | Accuracy | 
|---|---|---|---|---|
| Venom Drench | poison | status | 0 | 100 | 
| Move | Type | Category | Power | Accuracy | 
|---|---|---|---|---|
| Acid Spray | poison | special | 40 | 100 | 
| Curse | ghost | status | 0 | — | 
| Haze | ice | status | 0 | — | 
| Imprison | psychic | status | 0 | — | 
| Lick | ghost | physical | 30 | 100 | 
| Mean Look | normal | status | 0 | — | 
| Power-Up Punch | fighting | physical | 40 | 100 | 
| Scary Face | normal | status | 0 | 100 | 
| Shadow Punch | ghost | physical | 60 | — | 
| Shadow Sneak | ghost | physical | 40 | 100 | 
| Spit Up | normal | special | 0 | 100 | 
| Stockpile | normal | status | 0 | — | 
| Swallow | normal | status | 0 | — | 
Muk can not have any move tutor moves.
Muk can not get any moves from trs.
| English | Muk | 
|---|---|
| Spanish | Muk | 
| Italian | Muk | 
| Japanese | ベトベトン (Betbeton) | 
| German | Sleimok | 
| French | Grotadmorv | 
| Red Blue | Pokémon Mansion | 
|---|---|
| Yellow | Cinnabar Island, Power Plant, Pokémon Mansion | 
| Gold Silver Crystal | Route 16, Route 17, Route 18, Celadon City | 
| Ruby Sapphire FireRed | Grimer | 
| LeafGreen | Pokémon Mansion | 
| Emerald | Grimer | 
| Diamond Pearl Platinum | Grimer | 
| HeartGold SoulSilver | Route 16, Route 17, Route 18, Celadon City | 
| Black White | Trade/migrate from another game | 
| Black 2 White 2 | Route 9, Castelia Sewers | 
| X Y | Trade/migrate from another game | 
| Omega Ruby Alpha Sapphire | Grimer | 
| Sun Moon Ultra Sun Ultra Moon | Grimer, Alolan Grimer | 
| Let's Go Pikachu | Power Plant, Pokémon Mansion | 
| Let's Go Eevee | Trade/migrate from another game | 
| Sword Shield | Not available in this game | 
| Brilliant Diamond Shining Pearl | Grimer, Alolan Grimer |