Muk

Stench
Decreases wild encounter rate (no effect in battles).
Sticky Hold
This Pokémon's item cannot be removed. Increases the chance of encountering Pokémon while fishing.
Type Tier
Poison UU
Level 100 Statistics (see level 5, 50, 100)
Min- Min Max Max+
HP
105
- 351 414 -
Atk
105
221 246 309 339
Def
75
167 186 249 273
SpA
65
149 166 229 251
SpD
100
212 236 299 328
Spe
50
122 136 199 218

Overview

In UU, Muk is very hard to beat if you don't know the set. I recommend Muk for any UU team. It also has a very high cool factor.

Name Item Ability Nature

Standard

Leftovers Sticky Hold Brave
Moveset EVs
~ Sludge Bomb
~ Ice Punch
~ Explosion
~ Hidden Power Ghost / Hidden Power Grass
252 HP / 252 Atk / 4 SpD

Use this set for Muk in UU, where it's right at home. Switch in on a Grasser or a Fighter (hopefully without Earthquake), and hit away. Ice Punch shuts down any unsuspecting Gligar, Hidden Power Ghost is for Misdreavus and Shedinja, and Hidden Power Grass stops Quagsire. There's no need for Special Attack EVs as you need more EVs in Special Attack than it's worth to OHKO either Gligar or Quagsire. Both Hidden Powers should do the job should Solrock come in to counter you.

Name Item Ability Nature

SubPunch

Leftovers Sticky Hold Adamant / Brave
Moveset EVs
~ Sludge Bomb
~ Substitute
~ Focus Punch
~ Hidden Power Ghost / Ice Punch
252 HP / 196 Atk / 60 SpD

Slow and over 404 HP, so Muk is automatically a great Subpuncher. With a great Attack, this is something to watch out for. In UU, the only Steel that is used sometimes is Mawile, which Focus Punch is more than enough for, so Fire Blast isn't needed.

Name Item Ability Nature

Curse

Leftovers Sticky Hold Sassy / Careful
Moveset EVs
~ Curse
~ Sludge Bomb
~ Fire Blast / Hidden Power Ghost
~ Explosion / Rest
252 HP / 156 Atk / 100 SpD

Great Special Defense and Attack like Snorlax, Muk makes a pretty good Curser. Cursed Explosion is powerful, but with Rest you can keep on tanking. It will probably be run over by Psychic and Earthquake.

Name Item Ability Nature

Choice Band

Choice Band Sticky Hold Adamant
Moveset EVs
~ Sludge Bomb
~ Focus Punch
~ Hidden Power Ghost
~ Explosion
252 HP / 252 Atk / 4 SpD

More novelty than anything. Bring it in like you normally would, and predict what your opponent is going to do. Use the right attack, and hopefully you will hit them hard.

EVs

When you are running no special attacks, at least 401 HP on Muk, 404 if you are using Substitute. Adamant for the SubPuncher, Careful for the Curser, with EVs focused on the stats you are boosting (Attack and Special Defense respectively).

For mixed movesets, use a speed-cutting nature: Brave for more Attack, Sassy for more Special Defense.

As you see, Muk is quite hard to spread EVs for, so if you're having a lot of trouble you can just use max HP and Attack and you'll be just fine.

Other Options

Body Slam can paralyze the opponent, and paralysis is always good. Imprison is very unorthodox and works in very rare circumstances, stay away from it until you've tried out the standard Muk. Memento can make your opponent's Pokémon harmless, so you can set up a Belly Drummer next turn. Explosion is more recommended for suicide, though. Rest, with or without Sleep Talk, makes your Muk live longer. It's really an easy switch for counters though.

Checks and Counters

Muk is hard to counter. Its first set isn't shut down by anything completely, except Misdreavus and Shedinja if you run Hidden Power Grass, or Quagsire / Whiscash if you have Hidden Power Ghost. Nidoking and Nidoqueen can take one or two Ice Punches and Earthquake Muk to death.