Pokémon GO Mega Blastoise Raid Guide

Mega Blastoise is a Water-type boss. It is weak to Electric, Grass, and the top counter in our current attacker data is Mega Chesnaught(Vine Whip + Seed Bomb). The ranking below is our per-type attacker table recalculated for this boss's type matchups.

Mega Blastoise

Water

Weak toElectric×1.6Grass×1.6

ResistsFire×0.625Water×0.625Ice×0.625Steel×0.625

CP100% IV 1,409 · Weather boosted 1,761Caught at level 25 in Rainy weather

Weather that boosts its weaknesses — Rainy: Electric / Sunny: Grass

Best Mega Blastoise counters

Level 40, 15 IVs, target defense 180. Each attacker's moveset from our tier table is recalculated with this boss's type matchups (fast and charged moves separately). Overall combines damage output and time survived.

#	Pokémon · Attack type	Moveset	DPS	Overall
1	Mega Chesnaught Grass×1.6	Vine WhipSeed Bomb★	31.1	79.4
2	Mega Raichu Y Electric×1.6	Thunder ShockZap Cannon★	37.1	77.6
3	Mega Mewtwo Y Psychic×1	ConfusionFuture Sight★	30.3	75.2
4	Mega Mewtwo X Psychic×1	ConfusionPsystrike★	29.3	72.1
5	Mega Victreebel Grass×1.6	Magical LeafSolar Beam★	31.6	71.6
6	Mega Raichu X Electric×1.6	Thunder ShockVolt Tackle★	31.1	69.0
7	Shadow Zekrom Electric×1.6	Charge BeamFusion Bolt★	29.4	67.2
8	Regieleki Electric×1.6	Lock OnThunder Cage★	31.3	65.2
9	Mega Sceptile Grass×1.6	Bullet SeedFrenzy Plant★	28.0	62.4
10	Thundurus (Therian) Electric×1.6	Volt SwitchWildbolt Storm★	28.1	61.9
11	Zekrom Electric×1.6	Charge BeamFusion Bolt★	24.4	58.3
12	Mega Ampharos Electric×1.6	Volt SwitchZap Cannon	24.4	57.9
13	Mega Venusaur Grass×1.6	Vine WhipFrenzy Plant★	23.7	57.8
14	Primal Groudon Grass×1.6	Mud ShotSolar Beam	22.3	57.2
15	Shadow Raikou Electric×1.6	Thunder ShockWild Charge	25.4	57.1

★ = legacy move (not available from a regular TM)

Without Megas or Shadows

The same ranking with Mega and Shadow Pokémon removed.

#	Pokémon · Attack type	Moveset	DPS	Overall
1	Regieleki Electric×1.6	Lock OnThunder Cage★	31.3	65.2
2	Thundurus (Therian) Electric×1.6	Volt SwitchWildbolt Storm★	28.1	61.9
3	Zekrom Electric×1.6	Charge BeamFusion Bolt★	24.4	58.3
4	Zeraora Electric×1.6	SparkPlasma Fists	24.6	56.5
5	Zarude Grass×1.6	Vine WhipPower Whip	22.4	55.4
6	Kartana Grass×1.6	Razor LeafLeaf Blade	26.0	54.9
7	Shaymin Grass×1.6	Magical LeafGrass Knot	23.6	54.5
8	Necrozma (Dawn Wings) Ghost×1	Psycho CutMoongeist Beam★	22.6	54.2

Moves Mega Blastoise can use

Based on this Pokémon's current move pool, legacy moves excluded. The boss carries one fast move and one charged move from this list.

CP by IV

The CP shown on the catch screen tells you the IVs. Winning a Mega Raid lets you catch the Pokémon before Mega Evolution. The CP is for that form.

FAQ

Data basis

• Game data (move power, duration, base stats): as of 2026-10-08
• Counter ranking: GBL Note's own calculation — attacker tier table (2026-10-07) with this boss's type matchups
• Availability: checked automatically from a public schedule feed (2026-10-11)
• Sources: PokeMiners game master · PvPoke game master · LeekDuck schedule data (ScrapedDuck)

Other boss guides