Weak toGhostDark ×1.6

Attacker	Type	Moveset	DPS
Blacephalon	FireGhost	AstonishShadow Ball	48.5
Darkrai	Dark	SnarlShadow Ball	43.7
Chandelure	GhostFire	HexShadow Ball	43.3
Gengar	GhostPoison	LickShadow BallLegacy	43.3
Absol	Dark	SnarlBrutal SwingLegacy	42.4
Dragapult	DragonGhost	AstonishShadow Ball	41.3
Hoopa	PsychicGhost	AstonishShadow Ball	40.6
Lunala	PsychicGhost	Shadow ClawShadow Ball	40.5
Eternatus	PoisonDragon	Dragon TailDynamax CannonLegacy	40.5
Gholdengo	SteelGhost	HexShadow Ball	40.5
Zoroark	Dark	SnarlFoul Play	40.4
Chi-Yu	DarkFire	SnarlDark Pulse	40.2

Fog boosts the Ghost attacks above. Fog boosts Greavard.

Level 40, 15 attack IV, costed against Greavard's own defense and typing, one per evolution family.

Greavard's moveset, CP and shiny All counters Raid board

Questions people ask

What is Greavard weak to in Pokémon GO?

Greavard takes 1.6 times from Ghost and Dark.

What's the best counter to Greavard?

Blacephalon with Astonish and Shadow Ball, worth 48.5 damage per second against Greavard's own defense. The full ranking is above.