Cloyster
TL;DR. Cloyster is a water/ice-type Pokémon from Generation I. Base Stat Total: 525. When attacked, it launches its horns in quick volleys. Its innards have never been seen.
When attacked, it launches its horns in quick volleys. Its innards have never been seen.
Stat spread.
Total of 525. Higher peaks mean specialized roles, flat spreads favor versatility.
Rankings computed across all 1025 base-species Pokémon (Mega and Gigantamax forms excluded). Source: National Pokédex base stats.
Cloyster in Pokémon GO.
Pokémon GO uses its own hand-tuned base stats, distinct from the main-series spread above. At a perfect 15/15/15, Cloyster reaches 2,547 CP at level 40 and 2,914 CP as a best buddy.
Run the numbers: CP & HP calculator · PvP IV optimizer · Catch CP calculator
Cloyster in competitive play.
Cloyster is a Generation 9 RU-tier pick in Smogon singles. In Pokémon GO it ranks #758 in the Great League.
Build around it: GO PvP IV optimizer · Team builder · Ask Dia
Movesets via Smogon, GO ranks via PvPoke. Updated 2026-06-01.
Common questions about Cloyster.
Direct, sourced answers to the most-asked questions about Cloyster, each computed straight from its Pokédex data.
What type is Cloyster?
Cloyster is a Water/Ice-type Pokémon. Dual-typing stacks weaknesses and resistances. see the full matchup table below.
What is Cloyster weak to?
Cloyster takes 2× damage from Grass, Electric, Fighting, Rock. It has no 4× weaknesses.
What is Cloyster resistant to?
Cloyster resists Water, Ice. It has no full immunities.
How does Cloyster evolve?
Cloyster evolves from Shellder (Use Water Stone). Cloyster is the final form of its evolution line.
What generation is Cloyster from?
Cloyster was introduced in Generation I (the Kanto region). Its Pokédex number is #0091.
What are Cloyster's base stats?
Cloyster has HP 50, Attack 95, Defense 180, Special Attack 85, Special Defense 45, and Speed 70. Total base stat total: 525.
What are Cloyster's abilities?
Cloyster can have the abilities Shell Armor, Skill Link, plus the Hidden Ability Overcoat.
Is Cloyster legendary or mythical?
No. Cloyster is a regular Pokémon, not classified as Legendary or Mythical.
What is Cloyster's best stat?
Cloyster's highest base stat is Defense at 180, which ranks 2nd of 194 Water-type Pokémon.
Is Cloyster good?
Cloyster has a base stat total of 525, the 189th-highest of all 1025 Pokémon species and 35th among Water-types. That is a strong, fully-evolved stat spread.
Through the generations.
Cloyster as drawn across two decades of Pokémon games, plus the modern Pokémon HOME render. Hit the cry button to hear it.
In battle.
Damage multipliers when Cloyster is hit by each attacking type. 4× is two stacked weaknesses, ¼× is two stacked resistances.
Cloyster vs. the average Water-type.
Each base stat measured against the mean across all 194 Water-type Pokémon.
| Stat | Cloyster | Water avg | Difference |
|---|---|---|---|
| HP | 50 | 72 | -22 |
| Attack | 95 | 74 | +21 |
| Defense | 180 | 72 | +108 |
| Special Attack | 85 | 71 | +14 |
| Special Defense | 45 | 70 | -25 |
| Speed | 70 | 66 | +4 |
| Total | 525 | 425 | +100 |
Cloyster appears in 36 games.
Every mainline release where Cloyster is obtainable, has a dex entry, or is transferable. Grouped by generation.
- 1998 Blue
- 1998 Red
- 1999 Yellow
- 2000 Gold
- 2000 Silver
- 2001 Crystal
- 2003 Ruby
- 2003 Sapphire
- 2004 FireRed
- 2004 LeafGreen
- 2005 Emerald
- 2007 Diamond
- 2007 Pearl
- 2009 Platinum
- 2010 HeartGold
- 2010 SoulSilver
- 2011 Black
- 2011 White
- 2012 Black 2
- 2012 White 2
- 2013 X
- 2013 Y
- 2014 Alpha Sapphire
- 2014 Omega Ruby
- 2016 Moon
- 2016 Sun
- 2017 Ultra Moon
- 2017 Ultra Sun
- 2018 Let's Go, Eevee!
- 2018 Let's Go, Pikachu!
- 2019 Shield
- 2019 Sword
- 2020 Isle of Armor DLC
- 2022 Scarlet
- 2022 Violet
- 2016 Pokémon GO
Catch Cloyster in the wild.
Main-series wild-encounter locations, grouped by game. 8 games have a known habitat.
Cloyster appears in 11 episodes.
From EP036 (1997-12-02) through JN102 (2022-03-18).
- EP036 The Bridge Bike Gang Original 1998-10-23
- EP040 The Battling Eevee Brothers Original 1998-10-27
- EP063 The Battle of the Badge Original 1999-09-25
- EP076 All Fired Up! Original 1999-10-23
- EP083 Pallet Party Panic Original 1999-12-04
- EP087 Fit to Be Tide Original 2000-02-05
- EP099 Tracey Gets Bugged Original 2000-04-01
- EP168 Two Hits and a Miss Original 2001-09-15
- DP077 Staging a Heroes' Welcome! Diamond & Pearl 2008-09-20
- SM012 The Sun, the Scare, the Secret Lair! Sun & Moon 2017-06-03
- JN102 Battling in the Freezing Raid! Journeys 2022-10-21
Pokémon Masters EX · Sync Pairs
Cloyster partners with 2 trainers in Masters EX.
Each card is a canon Trainer + Cloyster partnership. Tap any pair to open the Sync Pair catalog and explore the full roster.
TCG Pocket appearances
3 Cloyster cards across TCG Pocket.
Every printed variant on iOS / Android. Tap any card for full art.
Pokémon like Cloyster
Closest matches by typing, role, stats, and lore, from the same semantic search that powers the Reverse Dex.