#0736 · Gen 7

Grubbin — Best counters

Weaknesses

	Pokémon	Fast move	Charged move	Weather	Score
1	Blaziken (Mega)	fireFire Spin	fireBlast BurnELITE	Clear	10013.2
2	Charizard (Mega Y)	fireFire Spin	fireBlast BurnELITE	Clear	9712.8
3	Rayquaza (Mega)	flyingAir Slash	flyingHurricaneELITE	Windy	9312.2
4	Blacephalon	fireIncinerate	fireOverheat	Clear	8911.7
5	Salamence (Mega)	fireFire Fang	flyingFly	Windy · partial	8811.5
6	Diancie (Mega)	rockRock Throw	rockRock Slide	Partly Cloudy	8711.5
7	Pidgeot (Mega)	flyingGustELITE	flyingBrave Bird	Windy	8711.4
8	Reshiram	fireFire Fang	fireFusion FlareELITE	Clear	8511.2
9	Charizard (Mega X)	fireFire Spin	fireBlast BurnELITE	Clear	8310.9
10	Salamence	fireFire Fang	flyingFly	Windy · partial	7810.3
11	Chandelure	fireFire Spin	fireOverheat	Clear	7810.3
12	Houndoom (Mega)	fireFire Fang	fireFire Blast	Clear	7810.3
13	Tyranitar (Mega)	rockSmack DownELITE	rockStone Edge	Partly Cloudy	7710.2
14	Enamorus (Incarnate)	fairyFairy Wind	flyingFly	Windy · partial	7710.1
15	Tornadus (Therian)	flyingGust	flyingBleakwind StormELITE	Windy	7610.1
16	Volcarona	fireFire Spin	fireOverheat	Clear	7610.0
17	Darmanitan (Standard)	fireFire Fang	fireOverheat	Clear	7610.0
18	Aerodactyl (Mega)	rockRock Throw	rockRock Slide	Partly Cloudy	749.8
19	Kyurem (White)	iceIce Fang	fireFusion Flare	Clear · partial	739.7
20	Rampardos	rockSmack Down	rockRock Slide	Partly Cloudy	739.7

Grubbin is weak to Flying (×1.6), Rock (×1.6), Fire (×1.6).
Watch its Bug/Electric/Normal/Dark moves — counters like Charizard (Mega Y) and Blacephalon take super-effective damage from them.
Clear weather boosts Fire moves ×1.2 — the best time to battle Grubbin.

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