Weak toFlyingFirePsychicIce ×1.6

Attacker	Type	Moveset	DPS
Deoxys	Psychic	Zen HeadbuttPsycho Boost	39.2
Blacephalon	FireGhost	IncinerateMind BlownLegacy	37.1
Mewtwo	Psychic	ConfusionPsystrikeLegacy	32.0
Reshiram	DragonFire	Fire FangFusion FlareLegacy	30.8
Salamence	DragonFlying	Fire FangFly	28.4
Chandelure	GhostFire	Fire SpinOverheat	28.2
Moltres	FireFlying	Fire SpinFly	28.0
Cinderace	Fire	Fire SpinPyroball	27.8
Volcarona	BugFire	Fire SpinOverheat	27.5
Darmanitan	Fire	Fire FangOverheat	27.4
Yveltal	DarkFlying	GustOblivion WingLegacy	27.4
Alakazam	Psychic	ConfusionPsychicLegacy	27.3

Clear boosts the Fire attacks above. Clear and Overcast boost Mega Victreebel.

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

Mega Victreebel's moveset, stats and CP All counters Raid board

Questions people ask

What is Mega Victreebel weak to in Pokémon GO?

Mega Victreebel takes 1.6 times from Flying, Fire, Psychic and Ice.

What's the best counter to Mega Victreebel?

Deoxys with Zen Headbutt and Psycho Boost, worth 39.2 damage per second against Mega Victreebel's own defense. The full ranking is above.