Type matchups and best counters for Omastar in Pokémon Polished Crystal. Learn which Pokémon can effectively counter Omastar and what types to use against it.
Types that deal increased damage to Omastar. Use these types to counter it effectively.
Types that Omastar resists or is immune to. Avoid using these types against it.
Pokémon that have type advantages against Omastar, either offensively or defensively.