#0088 · Gen 1

Grimer (Alola) — Best counters

Weaknesses

	Pokémon	Fast move	Charged move	Weather	Score
1	Groudon (Primal)	groundMud Shot	groundPrecipice BladesELITE	Clear	10012.7
2	Garchomp (Mega)	groundMud Shot	groundEarthquake	Clear	8911.3
3	Landorus (Therian)	groundMud Shot	groundSandsear StormELITE	Clear	8611.0
4	Groudon	groundMud Shot	groundPrecipice BladesELITE	Clear	769.7
5	Swampert (Mega)	groundMud Shot	groundEarthquake	Clear	749.4
6	Excadrill	groundMud Slap	groundEarthquake	Clear	729.2
7	Eternatus	dragonDragon Tail	dragonDynamax CannonELITE	Windy	729.1
8	Mamoswine	groundMud Slap	groundHigh Horsepower	Clear	719.0
9	Heracross (Mega)	fightingCounter	groundEarthquake	Clear · partial	708.9
10	Sceptile (Mega)	bugFury Cutter	groundEarthquake	Clear · partial	698.8
11	Regigigas	normalHidden Power	normalCrush GripELITE	Partly Cloudy	698.8
12	Rhyperior	groundMud Slap	groundEarthquake	Clear	688.7
13	Garchomp	groundMud Shot	groundEarthquake	Clear	688.7
14	Lucario (Mega)	fightingForce PalmELITE	fightingAura Sphere	Overcast	688.7
15	Rayquaza (Mega)	dragonDragon Tail	dragonBreaking SwipeELITE	Windy	688.7
16	Regieleki	normalLock On	electricThunder CageELITE	Rainy · partial	678.6
17	Landorus (Incarnate)	groundMud Shot	groundEarth Power	Clear	678.5
18	Krookodile	groundMud Slap	groundEarthquake	Clear	658.3
19	Metagross (Mega)	bugFury Cutter	groundEarthquake	Clear · partial	658.3
20	Eternatus (Eternamax)	dragonDragon Tail	dragonDynamax CannonELITE	Windy	658.2

Grimer (Alola) is weak to Ground (×1.6).
Watch its Poison/Dark moves — counters like Sceptile (Mega) and Metagross (Mega) take super-effective damage from them.
Clear weather boosts Ground moves ×1.2 — the best time to battle Grimer (Alola).

Rankings are estimated cycle DPS (attack stat × move damage ÷ cycle time, with STAB and type effectiveness). Not a full battle simulation.