Muk (Japanese: ベトベトン Betbeton) is a Poison-type Pokémon introduced in Generation I.
It evolves from Grimer starting at level 38.
In Alola, Muk has a Poison/Dark-type regional form. It evolves from Alolan Grimer starting at level 38.
Biology
Muk is a large, sticky, amorphous Pokémon made of living purple sludge. It has two small eyes with beady black pupils. It also has an enormous mouth with a gray tongue and strands of ooze connecting its top and bottom jaws. While it has no visible legs, it does have two arms with three fingers on each hand. However, it typically keeps one hand tucked in while it extends the other hand.
Muk is a living biohazard, leaking toxins that instantly kill all plant life it touches. Even it being in close proximity to plants will cause them to wilt and die. Extreme caution is advised in avoiding any contact with this Pokémon, as an accidental brush up can lead to severe sickness. The effects of this Pokémon can leave the landscape barren for three years. In dirty residential areas where people throw trash into the streets, it is almost certain to appear. It will readily consume nearly any waste or refuse generated by people and Pokémon alike. It can be found in heavily polluted bodies of water, cities and factories. However, Muk's population has declined due to recent environmental improvements and extermination efforts. This has led some to believe that it will go extinct at some point; sludge ponds are being built to prevent its extinction.
Alolan Muk has a more vibrant coloration, consisting of green, pink, and yellow stripes with thin blue bands in-between. The green, yellow, and pink stripes are capable of shifting downwards while the blue stays in place. It has various white, crystallized poison shards protruding from parts of its body, especially from its mouth and fingers, giving the impression of claws and fangs. It has blue eyes with a black space behind them and a bright blue tongue. Its vivid coloration is a result of the garbage it eats, which causes chemical changes in its body. Its body contains over a hundred different kinds of poisons.
Alolan Muk is unexpectedly quiet and friendly. However, if it is not fed trash for a while, its hunger will compel it to destroy its Trainer's furnishings for food. It is thought that it cannot maintain its energy without a constant source of toxins, which causes its voracious appetite. The crystals covering its body have a tendency to break off, which makes it extremely difficult to deal with due to the concentrated toxins contained within them. This variant of Muk does not produce the foul stench due to its toxins being contained in with its body.[1] Alolan Muk preys on Trubbish and Garbodor.
In the anime
In the main series
Major appearances
In Sparks Fly for Magnemite, Ash caught a Muk after it caused trouble at the Gringey City power plant. Immediately afterwards, it was transferred to Professor Oak's lab. Since then, it has always tried to smother Professor Oak. In The Fourth Round Rumble, Ash first used Muk in battle against Jeanette Fisher's Bellsprout, which had already defeated his Bulbasaur and Pikachu.
Other
In The Legend of Thunder!, Attila used a Muk to stop Vincent's Meganium and Jimmy's Typhlosion from freeing Raikou, but it was defeated by Little Miss.
Six Muk appeared in The Psyduck Stops Here!. Three of them invaded Lake Psyduck before being sent back to their home lake.
In Secrets From Out of the Fog!, a Team Plasma Grunt used a Muk to battle Ash and his friends, but it was defeated by Iris's Excadrill's Focus Blast.
In A Young Royal Flame Ignites!, the Revengers used an Alolan Muk to help Viren during his Battle Royal by distracting Incineroar.
Minor appearances
In The Fire-ing Squad!, four Muk competed in the Fire and Rescue Grand Prix. They faced off against Ash's team and were able to put the fire out first.
In Carrying On!, an ill Muk was in Way Away Island's Pokémon Center.
In a flashback in The Joy of Water Pokémon, a Muk lived in Lake Lucid before it became the clean lake it is now.
A Muk appeared in the opening sequence of Destiny Deoxys.
In An Old Family Blend!, a Trainer's Muk competed in the Lily of the Valley Conference.
In Racing to a Big Event!, an Alolan Muk was eating the pancakes that were dropped during the Pancake Race.
In Alola, Kanto!, a Trainer's Alolan Muk was compared to Ash's Muk.
In This Magik Moment!, a Trainer's Alolan Muk competed on Alola Pokémon Quiz.
Pokédex entries
| Episode
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Pokémon
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Source
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Entry
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| EP030
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Muk
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Ash's Pokédex
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Muk, Grimer's evolved form. Use extreme caution, as its slimy form contains poison.
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| Episode
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Pokémon
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Source
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Entry
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| DP087
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Muk
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Dawn's Pokédex
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Muk, the Sludge Pokémon. A horribly toxic liquid seeps out of its body.
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In the Pokémon Black 2 and White 2 Animated Trailer
Muk in the animated trailer
In the Pokémon Black Version 2 and Pokémon White Version 2 Animated Trailer, a Team Plasma Grunt's Muk surrounded Nate, Hugh, and Cheren aboard the Plasma Frigate.
In the manga
Alolan Muk in Pokémon Adventures
In the Ash & Pikachu manga
- Main article: Ash's Muk
Ash's Muk only appeared on the scoreboard in One Half Of A Poké Ball.
In The Electric Tale of Pikachu manga
- Main article: Ash's Muk
Ash has a Muk that he caught off-screen. It was used in the Indigo League where it fought and defeated Jeanette Fisher's Bellsprout.
In the Pokémon Adventures manga
Muk debuted in You know... Articuno!, where it was used in by Harry to help Team Rocket on their mission to get Articuno. When Red tried to stop them, Harry sent Muk against Red's Gyara. It was eventually frozen by Articuno.
Muk is one of the Pokémon owned by Koga in Karate Machop!, where it was used on Cerise Island to battle the Elite Four, and proved useful in Koga's survival after the island began to crumble. In the HeartGold & SoulSilver arc, it was used during the Circle Push event of the Pokéathlon.
A Muk appeared in a fantasy in Pinsir Me, I Must Be Dreaming.
A Muk appeared in a flashback as one of the Pokémon trained by the International Police in Innocent Scientist.
Multiple Muk appeared in Angry Boy, under the ownership of Team Plasma Grunts.
Multiple Muk appeared in a flashback in PS543, under the ownership of Team Plasma Grunts.
Moon's Alolan Grimer was revealed to have evolved into a Muk in PASM29.
In the Pokémon Pocket Monsters manga
Giovanni sent out multiple Muk to prevent anyone from winning the contest he hosted on TV in Seize the Dream of One Million Yen!!.
A Muk appeared in Pikachu's Birthday Party.
Koga was revealed to have a Muk when Red battled Karen.
In the TCG
- Main article: Muk (TCG)
Game data
Pokédex entries
| Generation I
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Kanto
#089
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| Red(ENG)
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Thickly covered with a filthy, vile sludge. It is so toxic, even its footprints contain poison.
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| Blue
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| Yellow
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Smells so awful, it can cause fainting. Through degeneration, it lost its sense of smell.
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| Stadium
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Becomes indistinguishable if it hides in dirt. Touching its sludge-covered body causes horrible poisonings.
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| Generation II
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Johto
#117
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| Gold
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They love to gather in smelly areas where sludge accumulates, making the stench around them worse.
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| Silver
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Its body is made of a powerful poison. Touching it accidentally will cause a fever that requires bed rest.
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| Crystal
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As it moves, a very strong poison leaks from it, making the ground there barren for three years.
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| Stadium 2
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They love to gather in smelly areas where sludge accumulates, making the stench around them worse.
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| Generation III
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Hoenn
#107
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Kanto
#089
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| Ruby
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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.
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| Sapphire
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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.
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| Emerald
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It prefers warm and humid habitats. In the summertime, the toxic substances in its body intensify, making Muk reek like putrid kitchen garbage.
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| FireRed
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It is usually undetectable because it blends in with the ground. Touching it can cause terrible poisoning.
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| LeafGreen
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Thickly covered with a filthy, vile sludge. It is so toxic, even its footprints contain poison.
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| Generation IV
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Sinnoh
#—
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Johto
#118
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| Diamond
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A toxic fluid seeps from its body. The fluid instantly kills plants and trees on contact.
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| Pearl
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| Platinum
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| HeartGold
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They love to gather in smelly areas where sludge accumulates, making the stench around them worse.
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| SoulSilver
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Its body is made of a powerful poison. Touching it accidentally will cause a fever that requires bed rest.
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| Generation V
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Unova
B2W2: #065
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| Black
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A toxic fluid seeps from its body. The fluid instantly kills plants and trees on contact.
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| White
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| Black 2
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It's so stinky! Muk's body contains toxic elements, and any plant will wilt when it passes by.
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| White 2
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| Generation VI
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Kalos
#—
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Hoenn
#112
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| X
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They love to gather in smelly areas where sludge accumulates, making the stench around them worse.
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| Y
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A toxic fluid seeps from its body. The fluid instantly kills plants and trees on contact.
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| Omega Ruby
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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.
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| Alpha Sapphire
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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.
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| Generation VII
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Alola
SM: #051
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Alola
USUM: #058
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Kanto
#089
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| Kantonian Muk
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| Sun
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The stench it gives off will make your nose scrunch up. Still, there are Muk fans who think that's a good thing.
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| Moon
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After recent environmental improvements, this Pokémon is now hardly seen at all. People speculate that it may go extinct at some point.
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| Ultra Sun
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Their food sources have decreased, and their numbers have declined sharply. Sludge ponds are being built to prevent their extinction.
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| Ultra Moon
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Because they scatter germs everywhere, they've long been targeted for extermination, leading to a steep decline in their population.
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| Let's Go Pikachu
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Smells so awful, it can cause fainting. Through degeneration of its nose, it lost its sense of smell.
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| Let's Go Eevee
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| Alolan Muk
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| Sun
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The garbage it eats causes continuous chemical changes in its body, which produce its exceedingly vivid coloration.
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| Moon
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While it's unexpectedly quiet and friendly, if it's not fed any trash for a while, it will smash its Trainer's furnishings and eat up the fragments.
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| Ultra Sun
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There are over a hundred kinds of poison inside its body. Chemical reactions between different poisons are the source of its vitality.
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| Ultra Moon
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What look like fangs and claws are actually crystallized poison that will afflict you at a mere touch, so don't get too close.
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| Let's Go Pikachu
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Muk's coloration becomes increasingly vivid the more it feasts on its favorite dish–trash.
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| Let's Go Eevee
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Game locations
In side games
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| Generation II
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| This Pokémon is unavailable in Generation II side games.
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Held items
Base_stats
Kantonian Muk
| Stat
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Range
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| At Lv. 50
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At Lv. 100
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105
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165 - 212
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320 - 414
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105
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99 - 172
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193 - 339
|
75
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72 - 139
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139 - 273
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65
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63 - 128
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121 - 251
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100
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94 - 167
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184 - 328
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50
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49 - 112
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94 - 218
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Total: 500
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Other Pokémon with this total
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- Minimum stats are calculated with 0 EVs, IVs of 0, and (if applicable) a hindering nature.
- Maximum stats are calculated with 252 EVs, IVs of 31, and (if applicable) a helpful nature.
- This Pokémon's Special base stat in Generation I was 65.
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Alolan Muk
| Stat
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Range
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| At Lv. 50
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At Lv. 100
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105
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165 - 212
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320 - 414
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105
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99 - 172
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193 - 339
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75
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72 - 139
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139 - 273
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65
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63 - 128
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121 - 251
|
100
|
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94 - 167
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184 - 328
|
50
|
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49 - 112
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94 - 218
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Total: 500
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Other Pokémon with this total
|
- Minimum stats are calculated with 0 EVs, IVs of 0, and (if applicable) a hindering nature.
- Maximum stats are calculated with 252 EVs, IVs of 31, and (if applicable) a helpful nature.
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Pokéathlon stats
Type effectiveness
Muk
| Under normal battle conditions in Generation IX, this Pokémon is:
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Alolan Muk
| Under normal battle conditions in Generation IX, this Pokémon is:
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Learnset
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This Pokémon is unavailable within Generation VIII.
Click on the generation numbers above to see Muk's learnsets from other generations.
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Side game data
Muk
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Pokémon Ranger
| Group:
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Poké Assist:
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Field move:
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None
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| Loops: 10
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Min. exp.: 58
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Max. exp.: 78
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Browser entry R-088
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| Muk heads right for the Capture Disc. It hurls big globs of sludge.
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Pokémon Rumble Rush
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Walking Speed: 1.98 seconds
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Base HP: 60
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| Base Attack: 79
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Base Defense: 57
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Base Speed: 60
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Alolan Muk
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Pokémon Rumble Rush
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Walking Speed: 1.98 seconds
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Base HP: 60
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| Base Attack: 79
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Base Defense: 57
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Base Speed: 60
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Evolution
Muk
Alolan Muk
Sprites
Trivia
- Although Muk's body is very poisonous, it doesn't seem to harm Ash and other characters when Muk is "hugging" them. This is probably because it is able to control whether it gives off poison or not, similar to how Ponyta can choose whether or not to burn the person that touches it. Croagunk is another Pokémon which is able to control the amount of poison it uses via its fingertips when using Poison Jab, or Sharpedo activating its Rough Skin Ability.
- Muk shares similar traits to Weezing and Garbodor. All three Pokémon are pure Poison-type Pokémon with a single pre-evolved form, roughly the same base stat totals and evolution levels, and appear to be based on a different kind of pollution; Muk being water pollution.
- Alolan Muk and its Alolan pre-evolved form were designed by Hitoshi Ariga.
- Muk is one of two Pokémon to have the shortest English Pokémon name, Mew being the other.
Origin
Muk appears to be a pile of living sludge. It may also be based on the imagined fear that heavy pollution, caused by the leakage and/or improper disposal of toxic/radioactive waste, may result in the creation of new and undesirable life. It may also be based on Dorotabō, a one-eyed, three-fingered yōkai that rises from the mud of neglected, overgrown rice fields.
Alolan Muk may be based on an oil slick, particularly the rainbow colors that are produced when a thin layer of oil floats on top of water; this is due to a phenomenon called thin-film interference. In the real world, oil spills are a major threat to ecosystems in the world's oceans and particularly in Hawaii, which Alola is based on.
Name origin
Muk is a corruption of muck (generally something filthy).
Betbeton may be derived from べとべと betobeto (sticky) and ton.
In other languages
| Language
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Title
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Meaning
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 Japanese
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ベトベトン Betbeton
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From べとべと betobeto
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 French
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Grotadmorv
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From gros and Tadmorv
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 Spanish
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Muk
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Same as English name
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 German
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Sleimok
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From Schleim and muck
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 Italian
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Muk
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Same as English name
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 Korean
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질뻐기 Jilppeogi
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From 질퍽하다 Jilpeoghada; also a corruption of 질퍽이 Jilpeogi
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 Mandarin Chinese
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臭臭泥 Chòuchòuní
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Means "Very foul sludge"
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 Cantonese Chinese
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爛泥怪 Laahnnàihgwaai
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Means "Ooze freak"
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| More languages
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 Hindi
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मक Muk
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Transcription of English name
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 Russian
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Мак Mak
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Transcription of English name
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 Thai
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เบ็ทเบตัน Betbeton
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Transcription of trademarked Japanese name
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Related articles
Notes
External links
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This Pokémon article is part of Project Pokédex, a Bulbapedia project that aims to write comprehensive articles on each Pokémon species, as well as Pokémon groups and forms.
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Gold Leaf (100%)
Nugget (2%)
Toxic Orb (1%)
Black Sludge (50%)
For other sprites and images, please see Muk images on the Bulbagarden Archives.
