Weak toGroundPsychic ×1.6

Attacker	Type	Moveset	DPS
Mewtwo	Psychic	ConfusionPsystrikeLegacy	55.0
Alakazam	Psychic	ConfusionPsychicLegacy	46.9
Groudon	Ground	Mud ShotPrecipice BladesLegacy	45.6
Azelf	Psychic	ConfusionFuturesight	45.5
Hoopa	PsychicGhost	ConfusionPsychic	45.3
Espeon	Psychic	ConfusionPsychic	45.3
Regigigas	Normal	Zen HeadbuttCrush GripLegacy	45.2
Lunala	PsychicGhost	ConfusionPsychic	44.3
Tapu Lele	PsychicFairy	ConfusionFuturesight	43.8
Latios	DragonPsychic	Zen HeadbuttPsychic	43.5
Excadrill	GroundSteel	Mud SlapEarthquake	43.3
Eternatus	PoisonDragon	Dragon TailDynamax CannonLegacy	43.0

Windy boosts the Psychic attacks above. Overcast boosts Gulpin.

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

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

Questions people ask

What is Gulpin weak to in Pokémon GO?

Gulpin takes 1.6 times from Ground and Psychic.

What's the best counter to Gulpin?

Mewtwo with Confusion and Psystrike, worth 55.0 damage per second against Gulpin's own defense. The full ranking is above.