Pokémon counters guide

Best Counters for Omastar

Find practical counter Pokémon, attacking types, and defensive matchup notes for Omastar.

RockWater
Omastar Pokémon sprite

Omastar

#0139

Quick answer

Grass is the strongest answer because both Rock and Water are weak to Grass, creating a 4x weakness. Electric, Fighting, and Ground are strong secondary attacking types.

Best move types

Grass×4Electric×2Fighting×2Ground×2

Biggest weakness

Grass×4

Type matchup table

Grass type iconGrass4x
Electric type iconElectric2x
Fighting type iconFighting2x
Ground type iconGround2x
Water type iconWater1x
Psychic type iconPsychic1x
Bug type iconBug1x
Rock type iconRock1x
Ghost type iconGhost1x
Dragon type iconDragon1x
Dark type iconDark1x
Steel type iconSteel1x
Fairy type iconFairy1x
Fire type iconFire0.25x
Normal type iconNormal0.5x
Ice type iconIce0.5x
Poison type iconPoison0.5x
Flying type iconFlying0.5x

Recommended practical counters

Strong theoretical counters

Best move types to use

Grass×4Electric×2Fighting×2Ground×2

Move availability depends on game version and learnset data, so this page recommends move types rather than guaranteed moves.

Grass type pageElectric type pageFighting type pageGround type page

Counter notes for Omastar

  • Omastar's Rock / Water typing makes Grass the cleanest answer because it reaches 4x damage. Its 55 base Speed means very slow counters still need enough bulk to take a hit first.
  • Electric, Fighting, and Ground attackers are useful secondary options when the top weakness is unavailable, but they should be chosen for safety, Speed, or team fit rather than raw multiplier alone.
  • Known abilities include Swift Swim, Shell Armor, and Weak Armor. This page does not assume ability-specific battle effects, so verify the format before relying on a single counter.
  • Avoid counters that are weak to Rock / Water unless they are fast enough to pressure immediately or bulky enough to survive the exchange.
  • Omastar does not need a separate alternate-form note for the standard National Dex matchup shown here.

What not to use

Fire×0.25Normal×0.5Ice×0.5Poison×0.5Flying×0.5

These attacking types are resisted or blocked by the defender's typing, so they are usually lower-priority choices unless they provide a special battle role.

Battle caveats

  • This ranking uses modern Gen 6+ type matchups, STAB value, defensive switch-in safety, and base stats.
  • Abilities, held items, Terastallization, weather, terrain, and format rules can change real battle outcomes.
  • Coverage moves can punish obvious counters, so treat this as type-based guidance rather than a full matchup simulator.
  • Move availability depends on game version and learnset data; this page recommends attacking types rather than guaranteed moves.

Related pages

Omastar weakness chartOmastar PokédexRock / Water countersGrass type pageElectric type pageFighting type pagePokémon type chartSpeed tiers

FAQ

What is the best counter for Omastar?

Omastar is best countered by Pokémon that can use Grass (4x) attacks while avoiding bad defensive matchups into Rock / Water STAB attacks. Because this is a 4x weakness, even moderate attackers can create pressure if they can enter safely.

What type is best against Omastar?

Grass is the strongest attacking type against Omastar, dealing 4x damage under the modern Gen 6+ type chart.

How many useful attacking types hit Omastar super-effectively?

Omastar has 4 super-effective attacking options: Grass, Electric, Fighting, and Ground. Use the highest multiplier first, then choose a Pokémon that is not exposed to Rock / Water STAB attacks.

Are abilities included in this counter ranking?

No. The ranking uses base typing and base stats. Abilities, items, Terastallization, weather, terrain, and special move rules can change the real matchup.

Does Terastallization change Omastar counters?

Yes. Terastallization can replace the defensive typing used here, so the recommended counter types may change completely in formats where Tera is active.

What should I avoid using against Omastar?

Avoid relying on Fire, Normal, Ice, Poison, and Flying attacks unless they have a special role or unusually high power.

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