Is Blastoise good in Pokemon GO?

Yes. Blastoise is A-tier for Great League and has 2 other ranked roles.

What are the best Blastoise IVs for Great League?

The rank-1 Great League spread is 4/8/15 (Attack/Defense/HP), which reaches the 1500 CP cap at level 23. Low Attack with high Defense and HP wins in capped leagues. Use the IV checker on this page to rank your own copy among all 4,096 spreads.

What are the best Blastoise IVs for Ultra League?

The rank-1 Ultra League spread is 5/15/15 (Attack/Defense/HP), which reaches the 2500 CP cap at level 45.5. Low Attack with high Defense and HP wins in capped leagues. Use the IV checker on this page to rank your own copy among all 4,096 spreads.

Is Blastoise a good raid attacker?

Blastoise ranks #73 of 283 water attackers with 11.0 DPS. That is outside the top 15, so it is not a raid priority.

Can Blastoise be shiny in Pokemon GO?

Yes. Shiny Blastoise is available from evolution, photobomb, raid, research, wild. A shiny is worth keeping for the collection no matter its IVs.

Is Shadow Blastoise worth keeping?

Shadow Blastoise hits 20% harder and takes 20% more damage. It has no ranked role of its own, so treat it like a normal copy.

#009 · Generation 1

Blastoise

water

Forms & variants

Max CP (L40 / L50): 2,466 / 2,788
Raid catch CP (L20 / L25): 1,409 / 1,761
Research CP (L15): 1,057
Buddy distance: 3 km
2nd charged move: 10,000 dust · 25 candy

Shiny
Shadow
Tradable
Mega
Dynamax

Keep

Blastoise earns its spot: A-tier Great League and A-tier Ultra League.

Battle roles

A
Great League#57 of 1154 · score 89
It is ranked #57 in Great League on PvPoke with Bite / Hydro Cannon / Skull Bash.
A
Ultra League#34 of 851 · score 89.3
It is ranked #34 in Ultra League on PvPoke with Bite / Hydro Cannon / Skull Bash.
C
Max Battle tankdynamax#38 of 157 tanks
C-tier Max Battle tank (#38 of 157 by Defence × HP): it takes the boss's hits and shields the party with Max Guard.
–
Master League#324 of 409 · score 50
Ranked #324 of 409; not competitive in Master League.

Worth evolving into

Mega Blastoise
A Water raid attacker (mega)

Collection value

Can Mega Evolve: keep your highest-Attack copy for raid days.
Has a Gigantamax form (G-Max Cannonade): Gigantamax copies only come from Max Battle Days and cannot be re-obtained otherwise.
3 costume/event variants: costumed copies cannot be re-obtained outside their event.
Shadow version exists: Shadows hit 20% harder and are worth a raid slot even with low IVs.

Tiers: S = meta-defining, A = strong, B = playable, C = niche. PvP from PvPoke overall rankings; raids from computed DPS/TDO within each attacking type; Max Battles from GO Hub tier lists.

Base stats

Attack171

Defense207

Stamina188

Base stats. Bars are scaled to the strongest Pokemon in the game.

Weak to

electric×1.6
grass×1.6

Resists

fire×0.625
ice×0.625
steel×0.625
water×0.625

Evolution line

Squirtle
→25 candyWartortle
→100 candyBlastoise

Check your Pokemon's IVs

Ranks all 4,096 spreads for each league

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PvP rankings (GO Battle League)

League	Tier	Rank	Score	Recommended moves	Typical build
Great League	A	#57 / 1154	89	Bite · Hydro Cannon · Skull Bash	L23 · 4/8/15
Great LeagueShadow	B	#200 / 1154	82.4	Bite · Hydro Cannon · Skull Bash	L23 · 4/8/15
Ultra League	A	#34 / 851	89.3	Bite · Hydro Cannon · Skull Bash	L45.5 · 5/15/15
Ultra LeagueShadow	B	#89 / 851	86.2	Bite · Hydro Cannon · Skull Bash	L45.5 · 5/15/15
Master League	–	#324 / 409	50	Rollout · Hydro Cannon · Ice Beam	L50 · 15/15/15
Master LeagueShadow	–	#336 / 409	48.7	Rollout · Hydro Cannon · Ice Beam	L50 · 15/15/15
Ultra Premier	S	#12 / 689	95.1	Rollout · Hydro Cannon · Skull Bash
Ultra PremierShadow	B	#56 / 689	90.9	Rollout · Hydro Cannon · Ice Beam
Master Premier	–	#111 / 274	67.9	Rollout · Hydro Cannon · Ice Beam	L50 · 15/15/15
Master PremierShadow	–	#135 / 274	65.3	Rollout · Hydro Cannon · Ice Beam	L50 · 15/15/15

Source: PvPoke overall rankings. Score is relative to the league meta (100 = best). Typical build is the IV spread PvPoke assumes.

Max Battles (Dynamax & Gigantamax)

Blastoise can Dynamax, and a Gigantamax version exists. Only copies caught in Max Battles (or from Max research) can enter Power Spot battles.

Max Moves

waterMax Geyserfrom Water Gun250 / 300 / 350 power
darkMax Darknessfrom Bite250 / 300 / 350 power
rockMax Rockfallfrom Rollout250 / 300 / 350 power
Max Guard+20 / +40 / +60 HP shield
Max Spiritheals 8 / 12 / 16% HP

The Gigantamax form swaps its water Max Move for G-Max Cannonade (350 / 400 / 450 power).

Max Battle roles

AttackerC Gigantamax
Tank (Max Guard)C GigantamaxC Dynamax

Max Move power is per level 1 / 2 / 3; levels are unlocked with Max Particles and Candy. Tiers are computed from level-3 Max Move damage, Defence × HP and HP at level 40; thresholds on the guide page.

Raid attacker rankings

Attacking type	Tier	Rank	DPS	TDO	Best moves
waterShadow	–	#49 / 283	12.9	226	Water Gun · Hydro CannonElite TM
water	–	#73 / 283	11.0	231	Water Gun · Hydro CannonElite TM
iceShadow	–	#101 / 231	9.8	171	Water Gun · Ice Beam
normalShadow	–	#101 / 354	9.8	171	Water Gun · Skull Bash
steelShadow	–	#105 / 182	9.1	159	Water Gun · Flash Cannon
steel	–	#120 / 182	7.8	164	Water Gun · Flash Cannon
ice	–	#128 / 231	8.3	174	Water Gun · Ice Beam
normal	–	#133 / 354	8.4	176	Water Gun · Skull Bash

Level 40, 15/15/15, neutral target. DPS = damage per second, TDO = total damage output before fainting. Rank is among every Pokemon using that attacking type.

Moves

Fast move	Type	Raid power	Energy	Duration	DPS	PvP power	PvP energy	Speed
Water GunSTAB	water	5	+5	0.5s	10.0	3	+3	1 turn
Bite	dark	6	+4	0.5s	12.0	2	+4	1 turn
Rollout	rock	15	+19	1.5s	10.0	7	+13	3 turns

Charged move	Type	Raid power	Energy	Duration	Dmg/energy	PvP power	PvP energy	Effects
Flash Cannon	steel	100	-100	2.5s	1.00	110	-65
Ice Beam	ice	95	-50	3.5s	1.90	90	-55
Hydro PumpSTAB	water	135	-100	3.5s	1.35	130	-75
Skull Bash	normal	130	-100	3.0s	1.30	130	-75	100% chance: +1 own Def
Hydro CannonElite TMSTAB	water	90	-50	2.0s	1.80	80	-40

Questions people ask

Is Blastoise good in Pokemon GO?: Yes. Blastoise is A-tier for Great League and has 2 other ranked roles.
Should I keep or transfer Blastoise?: Blastoise earns its spot: A-tier Great League and A-tier Ultra League.
What are the best Blastoise IVs for Great League?: The rank-1 Great League spread is 4/8/15 (Attack/Defense/HP), which reaches the 1500 CP cap at level 23. Low Attack with high Defense and HP wins in capped leagues. Use the IV checker on this page to rank your own copy among all 4,096 spreads.
What are the best Blastoise IVs for Ultra League?: The rank-1 Ultra League spread is 5/15/15 (Attack/Defense/HP), which reaches the 2500 CP cap at level 45.5. Low Attack with high Defense and HP wins in capped leagues. Use the IV checker on this page to rank your own copy among all 4,096 spreads.
Is Blastoise a good raid attacker?: Blastoise ranks #73 of 283 water attackers with 11.0 DPS. That is outside the top 15, so it is not a raid priority.
Can Blastoise be shiny in Pokemon GO?: Yes. Shiny Blastoise is available from evolution, photobomb, raid, research, wild. A shiny is worth keeping for the collection no matter its IVs.
Is Shadow Blastoise worth keeping?: Shadow Blastoise hits 20% harder and takes 20% more damage. It has no ranked role of its own, so treat it like a normal copy.

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Costumes & event variants (3)

Party HatEvent costume
SunglassesEvent costume
CloneEvent costume

Verdict: Keep