As a Water-type, Blastoise fills a straightforward role. Only weak to Electric and Grass. Known as the Shellfish Pokémon. Known as the Shellfish Pokemon. Can go either physical or special depending on the set.
Blastoise's spread isn't flashy. Sp. Def leads, Speed trails, 4 stats clear the bar. Tough to catch and worth 3 Sp. Def EVs, on a 1.06M XP medium-slow curve.
The cannon on its back is as powerful as a tank gun. Its tough legs and back enable it to withstand the recoil from firing the cannon.
Blastoise Weakness
GoodElectric and Grass-type moves hit Blastoise for super-effective damage. It resists 4 types, giving it decent defensive coverage. Blastoise's overall bulk (79/100/105) lets it take a hit or two from most weaknesses before going down.
Blastoise is the final form in a three-stage chain from Squirtle through Wartortle. Breeding this form produces Squirtle eggs (average hatch time). Evolving from Squirtle gave Blastoise the biggest boost in Sp.Def (+41), bringing the total to 530 stats.
How to Evolve
Breed with Blastoise to get Squirtle eggs easily from the Monster and Water1 egg groups.
The recommended build leans into Blastoise's strengths as a defensive wall. Leftovers provides passive recovery each turn, and max HP and Sp. Def EVs back that up. Torrent rounds out the package.
Best Build
Let's Go Pikachu & Eevee uses different battle mechanics.
Competitive build content is not applicable for this game. Select a main series game for builds.
Blastoise develops a solid moveset just through leveling. Hydro Pump and Skull Bash show up naturally, and the progression handles both STAB and utility without leaning on TMs for the core attacks.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
No wild encounters for Blastoise. The 3-stage chain runs through Squirtle, which you can catch at moderate rates from the locations below. Evolve at level 36 once you've got the levels.
How to Obtain Blastoise in Let's Go Pikachu & Eevee
The path to Blastoise starts with Squirtle at Lv. 7-44 via walking and gift encounters. 1 catchable stage total, with locations listed for each one below.
Step 1Catch SquirtleCHALLENGINGRoute 24Let's Go EeveeGrassLv.7-12RareEarlyRouteUnique encounterCHALLENGINGRoute 24Let's Go PikachuGrassLv.7-12RareEarlyRouteUnique encounterCHALLENGINGRoute 25Let's Go EeveeGrassLv.9-14RareEarlyRouteUnique encounterCHALLENGINGRoute 25Let's Go PikachuGrassLv.9-14RareEarlyRouteUnique encounterVermilion City - CityLet's Go PikachuGift from NPCLv.16MidCityGift from policewoman (60 caught)Vermilion City - CityLet's Go EeveeGift from NPCLv.16MidCityGift from policewoman (60 caught)CHALLENGINGSeafoam Islands - Area 1Let's Go PikachuGrassLv.39-44RareLateWaterUnique encounterCHALLENGINGSeafoam Islands - Area 1Let's Go EeveeGrassLv.39-44RareLateWaterUnique encounter
Step 2Evolve into Wartortle
Step 3Blastoise ✓
Blastoise has a 530 base stat total and ranks as C-Tier — a situational pick that fills a niche. It works best as a balanced. Base 105 Sp. Def is where it shines.
Torrent strengthens water moves to inflict 1.5× damage at 1/3 max HP or less — that's the one you want on Blastoise. Rain Dish is the hidden ability. Niche, but it has its uses.
Blastoise fills the balanced role. It's a mixed attacker — base 83 Attack and 85 Sp. Atk. Base 78 Speed is workable — faster than some, slower than many. And it's tanky enough to absorb a few hits.
Blastoise appears in 21 games, including Yellow, Red & Blue, and Gold & Silver.
Blastoise first appeared in Red & Blue and spans 21 games across 9 generations. It later gained a Mega form in Generation 7 and a Gigantamax form in Generation 8, adding new dimensions to its competitive identity.
- Gen IY
Yellow - Gen IRBDebut

Red & Blue - Gen IIGS

Gold & Silver - Gen IIC
Crystal - Gen IIIRS

Ruby & Sapphire - Gen IIIFRLG

FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS

HeartGold & SoulSilver - Gen IVDP

Diamond & Pearl - Gen VBW

Black & White - Gen VB2W2

Black 2 & White 2 - Gen VIXY

X & Y - Gen VIORASMega

Omega Ruby & Alpha Sapphire - Gen VIIUSUM

Ultra Sun & Ultra Moon - Gen VIISM

Sun & Moon - Gen VIILGPE

Let's Go Pikachu & Eevee - Gen VIIISwShGigantamax

Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP

Brilliant Diamond & Shining Pearl - Gen IXSV

Scarlet & Violet - Gen IXLZA
Legends: Z-A