| 
 | General | Location | Attacks | Stats | Egg Moves | 5th Gen Dex | 3rd Gen Dex |  | ||
| This Pokédex is for Ruby, Sapphire, Emerald, FireRed & LeafGreen. If you're looking for the Sword & Shield, Check out Muk Pokémon Sword & Shield data | ||||||||||
| Gen IX Dex | Gen VIII Dex | Gen VII Dex Let's Go Dex | Gen VI Dex | Gen V Dex | 
| Gen IV Dex | Gen III Dex | Gen II Dex | Gen I Dex | 
| Pokémon Game Picture | National No. | Hoenn No. | English name | Japanese Name | ||
| 
 | 089 | 107 | Muk | ベトベトン Betbeton | ||
| 
 | Ability: Stench & Sticky Hold | |||||
| Stench: When Muk is in the first slot of party, Wild Pokémon encounters decrease Sticky Hold: Muk's Item cannot be stolen | ||||||
| 
 | Gender Ratio | |||||
| Male: 50 % | Female: 50 % | |||||
| Classification | Type 1 | Type 2 | Height | Weight | ||
| Sludge Pokémon | 3'11" | 66.0 lbs | ||||
| Evolution Chain | ||||||
| Wild Hold Item | Dex Category | Colour Category | Footprint | 
| RSE  Nugget - 5% |   | Purple |   | 
| Damage Taken | ||||||||||||||||
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   | 
| *1 | *1 | *1 | *1 | *0.5 | *1 | *0.5 | *0.5 | *2 | *1 | *2 | *0.5 | *1 | *1 | *1 | *1 | *1 | 
| Flavor Text | |||
| Ruby | 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. | ||
| Sapphire | 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. | ||
| Emerald | It prefers warm and humid habitats. In the summertime, the toxic substances in its body intensify, making MUK reek like putrid kitchen garbage. | ||
| FireRed | It is usually undetectable because it blends in with the ground. Touching it can cause terrible poisoning. | ||
| LeafGreen | Thickly covered with a filthy, vile sludge. It is so toxic, even its footprints contain poison. | ||
| Location | |||
| Game | Location | ||
| Ruby | Evolve Grimer | ||
| Sapphire | Evolve Grimer | ||
| Emerald | Evolve Grimer | ||
| FireRed | Evolve Grimer | ||
| LeafGreen | Pokémon Mansion Floors 1, 2, 3 & Basement 1 | ||
| Colosseum | Trade from Ruby/Sapphire/Emerald/FireRed/LeafGreen/XD | ||
| XD | Evolve Grimer | ||
| Ruby/Sapphire/Emerald/Colosseum/XD Level Up | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Level | Attack Name | Type | Att. | Acc. | PP | Effect % | |||
| — | Poison Gas |  | -- | 55 | 40 | -- | |||
| Envelops the foe in a toxic gas that may poison. | |||||||||
| — | Pound |  | 40 | 100 | 35 | -- | |||
| Pounds the foe with forelegs or tail. | |||||||||
| — | Harden |  | -- | -- | 30 | -- | |||
| Stiffens the body's muscles to raise DEFENSE. | |||||||||
| 4 | Harden |  | -- | -- | 30 | -- | |||
| Stiffens the body's muscles to raise DEFENSE. | |||||||||
| 8 | Disable |  | -- | 55 | 20 | -- | |||
| Psychically disables one of the foe's moves. | |||||||||
| 13 | Sludge |  | 65 | 100 | 20 | 30 | |||
| Sludge is hurled to inflict damage. May also poison. | |||||||||
| 19 | Minimize |  | -- | -- | 20 | -- | |||
| Minimizes the user's size to raise evasiveness. | |||||||||
| 26 | Screech |  | -- | 85 | 40 | -- | |||
| Emits a screech to sharply reduce the foe's DEFENSE. | |||||||||
| 34 | Acid Armor |  | -- | -- | 40 | -- | |||
| Liquifies the user's body to sharply raise DEFENSE. | |||||||||
| 47 | Sludge Bomb |  | 90 | 100 | 10 | 30 | |||
| Sludge is hurled to inflict damage. May also poison. | |||||||||
| 61 | Memento |  | -- | 100 | 10 | -- | |||
| The user faints and lowers the foe's abilities. | |||||||||
| Fire Red/Leaf Green Level Up | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Level | Attack Name | Type | Att. | Acc. | PP | Effect % | |||
| — | Poison Gas |  | -- | 55 | 40 | -- | |||
| Envelops the foe in a toxic gas that may poison. | |||||||||
| — | Pound |  | 40 | 100 | 35 | -- | |||
| Pounds the foe with forelegs or tail. | |||||||||
| — | Harden |  | -- | -- | 30 | -- | |||
| Stiffens the body's muscles to raise DEFENSE. | |||||||||
| 4 | Harden |  | -- | -- | 30 | -- | |||
| Stiffens the body's muscles to raise DEFENSE. | |||||||||
| 8 | Disable |  | -- | 55 | 20 | -- | |||
| Psychically disables one of the foe's moves. | |||||||||
| 13 | Sludge |  | 65 | 100 | 20 | 30 | |||
| Sludge is hurled to inflict damage. May also poison. | |||||||||
| 19 | Minimize |  | -- | -- | 20 | -- | |||
| Minimizes the user's size to raise evasiveness. | |||||||||
| 26 | Screech |  | -- | 85 | 40 | -- | |||
| Emits a screech to sharply reduce the foe's DEFENSE. | |||||||||
| 34 | Acid Armor |  | -- | -- | 40 | -- | |||
| Liquifies the user's body to sharply raise DEFENSE. | |||||||||
| 47 | Sludge Bomb |  | 90 | 100 | 10 | 30 | |||
| Sludge is hurled to inflict damage. May also poison. | |||||||||
| 61 | Memento |  | -- | 100 | 10 | -- | |||
| The user faints and lowers the foe's abilities. | |||||||||
| TM & HM Attacks | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| TM/HM # | Attack Name | Type | Att. | Acc. | PP | Effect % | |||
| TM01 | Focus Punch |  | 150 | 100 | 20 | -- | |||
| A powerful loyalty attack. The user flinches if hit. | |||||||||
| TM06 | Toxic |  | -- | 85 | 10 | 100 | |||
| Poisons the foe with an intensifying toxin. | |||||||||
| TM10 | Hidden Power |  | ?? | 100 | 15 | -- | |||
| The effectiveness varies with the user. | |||||||||
| TM11 | Sunny Day |  | -- | -- | 5 | -- | |||
| Boosts the power of FIRE- type moves for 5 turns. | |||||||||
| TM12 | Taunt |  | -- | 100 | 20 | -- | |||
| Taunts the foe into only using attack moves. | |||||||||
| TM15 | Hyper Beam |  | 150 | 90 | 5 | -- | |||
| Powerful, but leaves the user immobile the next turn. | |||||||||
| TM17 | Protect |  | -- | -- | 10 | -- | |||
| Evades attack, but may fail if used in succession. | |||||||||
| TM18 | Rain Dance |  | -- | -- | 5 | -- | |||
| Boosts the power of WATER- type moves for 5 turns. | |||||||||
| TM19 | Giga Drain |  | 60 | 100 | 5 | -- | |||
| An attack that steals half the damage inflicted. | |||||||||
| TM21 | Frustration |  | ?? | 100 | 20 | -- | |||
| An attack that is stronger if the TRAINER is disliked. | |||||||||
| TM24 | Thunderbolt |  | 95 | 100 | 15 | 10 | |||
| A strong electrical attack that may paralyze the foe. | |||||||||
| TM25 | Thunder |  | 120 | 70 | 10 | 30 | |||
| A lightning attack that may cause paralysis. | |||||||||
| TM27 | Return |  | ?? | 100 | 20 | -- | |||
| An attack that increases in power with friendship. | |||||||||
| TM28 | Dig |  | 60 | 100 | 10 | -- | |||
| Digs underground the first turn and strikes next turn. | |||||||||
| TM31 | Brick Break |  | 75 | 100 | 15 | -- | |||
| Destroys barriers such as REFLECT and causes damage. | |||||||||
| TM32 | Double Team |  | -- | -- | 15 | -- | |||
| Creates illusory copies to raise evasiveness. | |||||||||
| TM34 | Shock Wave |  | 60 | -- | 20 | -- | |||
| A fast and unavoidable electric attack. | |||||||||
| TM35 | Flamethrower |  | 95 | 100 | 15 | 10 | |||
| A powerful fire attack that may inflict a burn. | |||||||||
| TM36 | Sludge Bomb |  | 90 | 100 | 10 | 30 | |||
| Sludge is hurled to inflict damage. May also poison. | |||||||||
| TM38 | Fire Blast |  | 120 | 85 | 5 | 10 | |||
| A fiery blast that scorches all. May cause a burn. | |||||||||
| TM39 | Rock Tomb |  | 50 | 80 | 10 | 100 | |||
| Stops the foe from moving with rocks and cuts SPEED. | |||||||||
| TM41 | Torment |  | -- | 100 | 15 | -- | |||
| Torments the foe and stops successive use of a move. | |||||||||
| TM42 | Facade |  | 70 | 100 | 20 | -- | |||
| Boosts ATTACK when burned, paralyzed, or poisoned. | |||||||||
| TM43 | Secret Power |  | 70 | 100 | 20 | 30 | |||
| An attack with effects that vary by location. | |||||||||
| TM44 | Rest |  | -- | -- | 10 | -- | |||
| The user sleeps for 2 turns, restoring HP and status. | |||||||||
| TM45 | Attract |  | -- | 100 | 15 | -- | |||
| Makes the opposite gender less likely to attack. | |||||||||
| TM46 | Thief |  | 40 | 100 | 10 | 100 | |||
| While attacking, it may steal the foe's held item. | |||||||||
| HM04 | Strength |  | 80 | 100 | 15 | -- | |||
| Builds enormous power, then slams the foe. | |||||||||
| HM06 | Rock Smash |  | 20 | 100 | 15 | 50 | |||
| A rock-crushing attack that may lower DEFENSE. | |||||||||
| Fire Red/Leaf Green/Emerald Tutor Attacks | ||||||||
| Attack Name | Type | Att. | Acc. | PP | Effect % | |||
| Body Slam |  | 85 | 100 | 15 | 30 | |||
| A full-body slam that may cause paralysis. | ||||||||
| Mimic |  | -- | 100 | 10 | -- | |||
| Copies a move used by the foe during one battle. | ||||||||
| Explosion |  | 250 | 100 | 5 | -- | |||
| Inflicts severe damage but makes the user faint. | ||||||||
| Substitute |  | -- | -- | 10 | -- | |||
| Creates a decoy using 1/4 of the user's maximum HP. | ||||||||
| Emerald Tutor Attacks | ||||||||
| Attack Name | Type | Att. | Acc. | PP | Effect % | |||
| Dynamicpunch |  | 100 | 50 | 5 | 100 | |||
| Powerful and sure to cause confusion, but inaccurate. | ||||||||
| Snore |  | 40 | 100 | 15 | 30 | |||
| A loud attack that can be used only while asleep. | ||||||||
| Endure |  | -- | -- | 10 | -- | |||
| Endures any attack for 1 turn, leaving at least 1HP. | ||||||||
| Mud-slap |  | 20 | 100 | 10 | 100 | |||
| Hurls mud in the foe's face to reduce its accuracy. | ||||||||
| Ice Punch |  | 75 | 100 | 15 | 10 | |||
| An icy punch that may freeze the foe. | ||||||||
| Swagger |  | -- | 90 | 15 | 100 | |||
| Confuses the foe, but also sharply raises ATTACK. | ||||||||
| Sleep Talk |  | -- | -- | 10 | -- | |||
| Uses an own move randomly while asleep. | ||||||||
| Thunderpunch |  | 75 | 100 | 15 | 10 | |||
| An electrified punch that may paralyze the foe. | ||||||||
| Fire Punch |  | 75 | 100 | 15 | 10 | |||
| A fiery punch that may burn the foe. | ||||||||
| Egg Moves | ||||||||
| Attack Name | Type | Att. | Acc. | PP | Effect % | |||
| Haze |  | -- | -- | 30 | -- | |||
| Creates a black haze that eliminates all stat changes. | ||||||||
| Mean Look |  | -- | 100 | 5 | -- | |||
| Fixes the foe with a mean look that prevents escape. | ||||||||
| Lick |  | 20 | 100 | 30 | 30 | |||
| Licks with a long tongue to injure. May also paralyze. | ||||||||
| Imprison |  | -- | 100 | 10 | -- | |||
| Prevents foes from using moves known by the user. | ||||||||
| Curse |  | -- | -- | 10 | -- | |||
| A move that functions differently for GHOSTS. | ||||||||
| Shadow Punch |  | 60 | -- | 20 | -- | |||
| An unavoidable punch that is thrown from shadows. | ||||||||
| Explosion |  | 250 | 100 | 5 | -- | |||
| Inflicts severe damage but makes the user faint. | ||||||||
| Egg Steps to Hatch | Effort Points from Battling it | Catch Rate | 
| 5,120 Steps | HP: 1 Point, Attack: 1 Point | 75 | 
| Egg Groups | |
| Lists Of Groups | Group Names | 
| Indeterminate | |
| Stats | ||||||
| HP | Attack | Defense | Sp. Attack | Sp. Defense | Speed | |
| Base Stats | 105 | 105 | 75 | 65 | 100 | 50 | 
| Max Stats Hindering Nature | 414 | 278 | 224 | 206 | 269 | 179 | 
| Max Stats Neutral Nature | 414 | 309 | 249 | 229 | 299 | 199 | 
| Max Stats Beneficial Nature | 414 | 339 | 273 | 251 | 328 | 218 | 










