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