Muk is weak to Ground-type moves, and most forms are also weak to Psychic-type moves.

Quick Scoop: What Is Muk Weak Against?

Muk is a classic Poison-type PokĂ©mon, which shapes almost all of its strengths and weaknesses. When people ask “what is Muk weak against ,” they’re usually talking about its main Kanto form, but Alolan Muk shows up a lot in recent forum discussion and latest news around competitive and PokĂ©mon GO battles.

In simple terms: hit Muk with Ground or Psychic, and it melts faster than you’d expect.

Main Weaknesses (Kanto Muk)

Standard Muk (pure Poison type) is weak to:

  1. Ground-type moves (super effective).
  1. Psychic-type moves (super effective).

That’s it—just these two main weaknesses. Everything else is neutral or resisted.

Some examples of strong counters:

  • Powerful Ground attackers (e.g., Earthquake users) deal huge damage.
  • Strong Psychic attackers with STAB moves (like Psychic, Psyshock, etc.) also threaten Muk heavily.

What Alolan Muk Is Weak Against

Alolan Muk is Poison/Dark , which changes the story.

  • Dark normally fears Fighting and Fairy, but Poison resists those types, so they end up neutral.
  • Poison is normally weak to Psychic, but Dark double-resists Psychic, canceling that weakness.
  • Both Poison and Dark share a weakness to Ground, so Ground stays super effective.

So:

  • Alolan Muk is only weak to Ground-type moves.

This “one-weakness” profile is why Alolan Muk is still a hot topic in 2025–2026 PvP and raid counter discussions.

Resistances So You Don’t Misfire

When you’re planning what to use against Muk, it helps to know what not to bring.

For standard (Kanto) Muk, it resists :

  • Grass
  • Fighting
  • Poison
  • Bug
  • Fairy

So Grass or Fairy attackers, for example, will generally feel weak and inefficient into Muk.

Standard vs Alolan Muk Type Matchups

Here’s a quick table you can skim mid-battle:

Form Typing What Muk is weak against Commonly resisted types
Kanto Muk Poison Ground, Psychic (super effective) Grass, Fighting, Poison, Bug, Fairy
Alolan Muk Poison / Dark Ground only (super effective) Fighting, Fairy (neutralized), Psychic (heavily resisted), plus typical Poison/Dark resistances
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Little Story: Why Players Care

In recent forum discussion , trainers often describe Muk as that “sticky wall” that just won’t go down unless you bring the right tool. In GO PvP chats, people joke that fighting Alolan Muk with anything except Ground is like “trying to mop up sludge with more sludge.” Competitive writeups in early 2026 keep repeating the same theme: if you remember just one thing, remember Ground beats both forms, and Psychic is the extra hammer for regular Muk.

TL;DR:

  • Regular Muk (Poison): weak to Ground and Psychic.
  • Alolan Muk (Poison/Dark): weak to Ground only.

Information gathered from public forums or data available on the internet and portrayed here.