Species guide · Ages 10+ · July 2026
Cloyster
Say it: CLOY-ster
Kids summary (simpler)Tap to expand
Cloyster is the Bivalve Pokémon — Water and Ice from Shellder. In Pokémon GO it is a classic Ice (and Water) attacker. Ice helps against Dragon, Flying, Grass, and Ground; Water helps against Fire, Ground, and Rock. Electric, Grass, Fighting, and Rock punish it. Avalanche from Shellder Community Day (or an Elite TM) is its best Ice charged move. Evolve Shellder or catch Cloyster from events.
Say it: CLOY-ster
Cloyster (#091) is a Water / Ice Pokémon in Pokémon GO — the final form of Shellder. Trainers use it as an Ice raid attacker with Ice Shard / Frost Breath + Avalanche / Razor Shell / Hydro Pump / Icy Wind. Against Cloyster, lead with Electric, Grass, Fighting, or Rock. Stats, type chart, moves, and counter picks below use our Game Master snapshot.
Type-colored placeholder — not official Pokémon artwork (see IP notice below).
Pokédex notes
Cloyster is a Water / Ice-type Pokémon in Pokémon GO. National Dex #0091. Use the Water/Ice type chart below before powering up — metas shift every season.
Where in GO: Wild spawns, eggs, Field Research, and seasonal events
Invest tip: Priority Community Day move: Avalanche (Elite Charged TM if you missed Shellder CD). Ice Shard + Avalanche is the usual Ice kit; Razor Shell adds Water. Shadow Cloyster is elite Ice DPS — remove Frustration before investing.
Type matchups
- Water moves hit Fire, Ground, and Rock hard.
- Ice moves hit Grass, Ground, Flying, and Dragon hard.
When Cloyster is your opponent, Electric, Grass, Fighting, Rock hits hard.
Full type matchup guide →GO base stats
From Game Master snapshot — IVs, buddy, and power-ups change real battle stats.
- Attack
- 186
- Defense
- 256
- Stamina
- 137
Weak to
Resists
Best Pokémon to use against it
When this species is your opponent (Rocket battle, gym, raid, or PvP), these picks exploit its typings. Each list is a pool of options — not a required 12-Pokémon lobby.
Recommended
Strongest practical attackers for this matchup.
- 1. Zekrom · beats Electric
Charge Beam + Fusion Bolt
- 2. Shadow Zekrom · beats Electric
Charge Beam + Fusion Bolt
- 3. Shadow Raikou · beats Electric
Thunder Shock + Wild Charge
- 4. Xurkitree · beats Electric
Thunder Shock + Discharge
- 5. Therian Thundurus · beats Electric
Volt Switch + Thunderbolt
- 6. Mega Manectric · beats Electric
Thunder Shock + Wild Charge
- 7. Raikou · beats Electric
Thunder Shock + Wild Charge
- 8. Electivire · beats Electric
Thunder Shock + Wild Charge
- 9. Shadow Electabuzz · beats Electric
Thunder Shock + Thunder Punch
- 10. Zapdos · beats Electric
Thunder Shock + Thunderbolt
- 11. Magnezone · beats Electric
Spark + Wild Charge
- 12. Luxray · beats Electric
Spark + Wild Charge
Budget
Solid alternatives when you cannot build the Recommended picks.
- 1. Electivire · beats Electric
Thunder Shock + Wild Charge
- 2. Luxray · beats Electric
Spark + Wild Charge
- 3. Manectric · beats Electric
Thunder Shock + Wild Charge
- 4. Jolteon · beats Electric
Thunder Shock + Thunderbolt
- 5. Ampharos · beats Electric
Volt Switch + Zap Cannon
- 6. Zebstrika · beats Electric
Spark + Wild Charge
- 7. Galvantula · beats Electric
Volt Switch + Discharge
- 8. Eelektross · beats Electric
Spark + Thunderbolt
- 9. Heliolisk · beats Electric
Volt Switch + Thunderbolt
- 10. Stunfisk · beats Electric
Thunder Shock + Discharge
- 11. Raichu · beats Electric
Thunder Shock + Wild Charge
- 12. Magneton · beats Electric
Spark + Discharge
Recommended moves
Game Master “moves in GO” lists the always-available TM pool. Avalanche is a Shellder Community Day exclusive — Elite TM if you missed the event.
Fast
- Ice Shard · Standard
Ice energy / default
- Frost Breath · Standard
Ice damage
Charged
- Avalanche · Community Day / Elite TM
Best Ice nuke
- Razor Shell · Standard
Water / PvP
- Hydro Pump · Standard
Water nuke
- Icy Wind · Standard
Ice / debuff
- Liquidation · Standard
Water alternate
- Aurora Beam · Standard
Ice alternate
Moves in GO
Always-available Game Master learnset (regular TMs). Community Day / Elite TM moves appear above when we have curated notes for this species.
Fast
- frost breath
- ice shard
Charged
- aurora beam
- hydro pump
- avalanche
- icy wind
- liquidation
- razor shell
PvP league ranks (family snapshot)
- Great League · rank #425 of 954 · CP 1492
Frost Breath + Avalanche
- Ultra League · rank #286 of 747 · CP 2493
Frost Breath + Avalanche
- Master League · rank #382 of 1023 · CP 2880
Frost Breath + Avalanche
In your Collect
Name match only (text). Cards you have saved in Card Nexus Collect — not official art.
Sign in to see holdings, or open Collect.
Open Collect →Raid and PvP advice uses our Game Master snapshot (updated July 2026).
Raid attacker roles
In the Competitive Guide
- Ch. 20: Lucky Pokémon & Family Trades
When lucky status matters for trades and Stardust savings.
- Ch. 21: Best Friends & Lucky Friends
Friendship steps for raid bonuses and lucky trades.