Weak toGhostSteel ×1.6

Attacker	Type	Moveset	DPS
Blacephalon	FireGhost	AstonishShadow Ball	23.5
Metagross	SteelPsychic	Bullet PunchMeteor MashLegacy	21.6
Chandelure	GhostFire	HexShadow Ball	21.0
Tinkaton	FairySteel	Fairy WindGigaton HammerLegacy	21.0
Gengar	GhostPoison	LickShadow BallLegacy	20.9
Dragapult	DragonGhost	AstonishShadow Ball	20.0
Lucario	FightingSteel	Bullet PunchMeteor Mash	19.9
Hoopa	PsychicGhost	AstonishShadow Ball	19.6
Lunala	PsychicGhost	Shadow ClawShadow Ball	19.6
Gholdengo	SteelGhost	HexShadow Ball	19.6
Polteageist	Ghost	HexShadow Ball	19.3
Dialga	SteelDragon	Metal ClawIron Head	19.1

Fog boosts the Ghost attacks above. Fog and Overcast boost Flutter Mane.

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

Flutter Mane's moveset, CP and shiny All counters Raid board

Questions people ask

What is Flutter Mane weak to in Pokémon GO?

Flutter Mane takes 1.6 times from Ghost and Steel.

What's the best counter to Flutter Mane?

Blacephalon with Astonish and Shadow Ball, worth 23.5 damage per second against Flutter Mane's own defense. The full ranking is above.