Muk is a large, sticky, amorphous Pokémon made of living purple sludge with two small eyes with beady black pupils and an enormous mouth with a gray tongue. This Poison-type Pokémon is considered a living biohazard, leaking toxins that instantly kill all plant life it touches, with effects that can leave the landscape barren for three years. Muk's body produces a powerful odor that can cause fainting, though some fans believe its stench is actually a good thing. It readily consumes nearly any waste or refuse generated by people and Pokémon alike, with garbage causing continuous chemical changes in its body that produce its vivid coloration. There are over a hundred kinds of poison inside Muk's body, and chemical reactions between different poisons are the source of its vitality. What appear to be fangs and claws are actually crystallized poison that will afflict anyone at a mere touch. While unexpectedly quiet and friendly, if not fed trash for a while, it will smash its Trainer's furnishings and eat the fragments. After recent environmental improvements, this Pokémon is now rarely seen, leading to speculation about possible extinction.
Pokédex Data
- National №: 089
- Type: Poison (Normal form) / Poison-Dark (Alolan form)
- Species: Sludge Pokémon
- Height: 1.2 m (3′11″) / 1.0 m (3′03″) (Alolan form)
- Weight: 30.0 kg (66.1 lbs) / 52.0 kg (114.6 lbs) (Alolan form)
- Abilities: Stench, Sticky Hold, Poison Touch (hidden ability) / Poison Touch, Gluttony, Power of Alchemy (hidden ability) (Alolan form)
- Catch rate: 75 (9.8% with PokéBall, full HP)
- Base Friendship: 50-70 (varies by generation)
- Base Exp.: 175
- Growth Rate: Medium Fast
- EV yield: 1 HP, 1 Attack
Breeding
- Egg Groups: Amorphous
- Gender: 50% male, 50% female
- Egg cycles: 20 (4,884–5,140 steps)
Pokédex Entries Across Versions
- Sun: The garbage it eats causes continuous chemical changes in its body, which produce its exceedingly vivid coloration.
- Moon: 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.
- Ultra Sun: There are over a hundred kinds of poison inside its body. Chemical reactions between different poisons are the source of its vitality.
- Ultra Moon: What look like fangs and claws are actually crystallized poison that will afflict you at a mere touch, so don't get too close.
- Let's Go, Pikachu: Muk's coloration becomes increasingly vivid the more it feasts on its favorite dish—trash.
- X: They love to gather in smelly areas where sludge accumulates, making the stench around them worse.
- Y: A toxic fluid seeps from its body. The fluid instantly kills plants and trees on contact.
- Omega 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.
- Alpha 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.
Evolutions
Muk evolves from Grimer starting at level 38. In Alola, Muk has a dual-type Poison/Dark regional form that evolves from Alolan Grimer starting at level 38.
Habits
- Muk loves to gather in smelly areas where sludge accumulates.
- It feeds primarily on garbage and filthy materials, which cause chemical changes in its body.
- If not fed trash for a while, it becomes destructive and will break furniture to eat the pieces.
- Its toxic body instantly kills plants that it touches or even comes near.
- Despite its dangerous nature, it's described as unexpectedly quiet and friendly.
Additions Across Generations
- In Generation 1, Muk had a base Special stat of 65.
- In Generations 1-4, Muk had a base experience yield of 157.
- In Generations 2-7, Muk had a base Friendship value of 70.
- In Generation 7, Alolan Muk was introduced with a dual Poison/Dark typing and different abilities.
- After environmental improvements in recent generations, Muk has become increasingly rare, with some speculating it may go extinct.
- Some regions have begun building sludge ponds to prevent Muk's extinction as their food sources have decreased.