Metamons
Mareanie official artwork
PoisonWater

#0747

Brutal Star Pokémon

Mareanie

Height0.4 m
Weight8.0 kg
Base Exp61
BST305

MetaMons competitive notes

Mareanie is a poison/water-type Pokémon whose base stats lean toward Defense — at 305 BST it is a low total for competitive play, with slow (base 45) and a mixed attacking profile. Its Merciless ability matters more than the raw numbers when it hits the field: check what it does before deciding between a sweeper, pivot, or support role for Mareanie. Build around what Mareanie actually threatens, not its in-game lore — start from its weaknesses and strongest STAB moves, then decide whether its Speed, bulk, or coverage justifies a team slot.

Mareanie Weakness — What Beats Mareanie?

Mareanie is a Poison/Water-type Pokémon. Full weakness, resistance, and immunity breakdown below.

What is Mareanie weak to?

Mareanie is a Poison/Water-type, so it takes super-effective damage from Electric, Ground, Psychic. It resists Fire, Water, Ice, Fighting, Poison, Bug, Steel, Fairy.

  • Electric2× damage
  • Ground2× damage
  • Psychic2× damage
Mareanie resistances
  • Fire0.5× damage
  • Water0.5× damage
  • Ice0.5× damage
  • Fighting0.5× damage
  • Poison0.5× damage
  • Bug0.5× damage
  • Steel0.5× damage
  • Fairy0.5× damage
Mareanie immunities

Mareanie has no type immunities.

How to counter Mareanie

To counter Mareanie in competitive play, bring Pokémon that can hit back with Electric or Ground or Psychic moves and can withstand its Poison/Water STAB attacks.

Electric-type counters

Ground-type counters

Psychic-type counters

Want the full picture? See Mareanie's base stats, moveset, and evolution chain.