Weak toGroundPsychic ×1.6

Attacker	Type	Moveset	DPS
Mewtwo	Psychic	ConfusionPsystrikeLegacy	37.3
Alakazam	Psychic	ConfusionPsychicLegacy	31.9
Groudon	Ground	Mud ShotPrecipice BladesLegacy	30.9
Azelf	Psychic	ConfusionFuturesight	30.9
Hoopa	PsychicGhost	ConfusionPsychic	30.7
Espeon	Psychic	ConfusionPsychic	30.7
Regigigas	Normal	Zen HeadbuttCrush GripLegacy	30.7
Lunala	PsychicGhost	ConfusionPsychic	30.1
Tapu Lele	PsychicFairy	ConfusionFuturesight	29.7
Latios	DragonPsychic	Zen HeadbuttPsychic	29.5
Excadrill	GroundSteel	Mud SlapEarthquake	29.4
Eternatus	PoisonDragon	Dragon TailDynamax CannonLegacy	29.1

Windy boosts the Psychic attacks above. Overcast boosts Arbok.

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

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

Questions people ask

What is Arbok weak to in Pokémon GO?

Arbok takes 1.6 times from Ground and Psychic.

What's the best counter to Arbok?

Mewtwo with Confusion and Psystrike, worth 37.3 damage per second against Arbok's own defense. The full ranking is above.