Biology
Cloyster is a black, pearl-like Pokémon. It is encased inside a light grey shell, which is surrounded by a second jagged, blue-violet outer shell casing. It has one barb-like spike protruding from above its head, and multiple conical horns on its outer shell. Its shell is harder than diamond with spikes that are even harder; harsh tidal currents will affect the size and sharpness of these spikes. On its pearl-like face, it has two white eyes and a mouth. Aside from its face and head, its internal anatomy has never been seen.
It typically only opens its shell to attack an opponent. However, it is fully capable of retaliating against any enemy with its shell tightly closed. With rapid succession, it launches its spikes at the foe, keeping them repelled. Once it has shut itself in, it is impossible to open its shell from the outside. This impressive defense allows it to withstand anything from a bomb blast to even a missile strike. The same projectile system it uses to launch its spikes is also used for swimming. It swallows seawater, and then ejects it towards the rear propelling it through with siphon-jet propulsion. It lives on the sea floor, nestled among the rocks and coral.
In the animeIn the mangaIn the TCGGame data
NPC appearances
- Pokémon Pinball: A Cloyster appears on the Blue Table. When the pinball can be shot into the Cloyster, Catch'em Mode is activated, allowing for the capture of a Pokémon.
Pokédex entries
Generation I
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Red(ENG)
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When attacked, it launches its horns in quick volleys. Its innards have never been seen.
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Blue
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Yellow
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For protection, it uses its harder-than-diamonds shell. It also shoots spikes from the shell.
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Stadium
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Its shell is so hard, it can even withstand a bomb. No one has ever seen what is inside its shell.
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Generation II
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Gold
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Once it slams its shell shut, it is impossible to open, even by those with superior strength.
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Silver
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Cloyster that live in seas with harsh tidal currents grow large, sharp spikes on their shells.
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Crystal
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Even a missile can't break the spikes it uses to stab opponents. They're even harder than its shell.
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Stadium 2
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Once it slams its shell shut, it is impossible to open, even by those with superior strength.
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Generation III
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Ruby
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Cloyster is capable of swimming in the sea. It does so by swallowing water, then jetting it out toward the rear. This Pokémon shoots spikes from its shell using the same system.
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Sapphire
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Emerald
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It swims in the sea by swallowing water, then jetting it out toward the rear. The Cloyster shoots spikes from its shell using the same system.
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FireRed
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Its shell is extremely hard. It cannot be shattered, even with a bomb. The shell opens only when it is attacking.
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LeafGreen
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When attacked, it launches its horns in quick volleys. Its innards have never been seen.
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Generation IV
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Diamond
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It fights by keeping its shell tightly shut for protection and by shooting spikes to repel foes.
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Pearl
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Platinum
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HeartGold
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Once it slams its shell shut, it is impossible to open, even by those with superior strength.
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SoulSilver
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Cloyster that live in seas with harsh tidal currents grow large, sharp spikes on their shells.
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Generation V
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Black
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It fights by keeping its shell tightly shut for protection and by shooting spikes to repel foes.
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White
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Black 2
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It fights by keeping its shell tightly shut for protection and by shooting spikes to repel foes.
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White 2
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Generation VI
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X
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Cloyster that live in seas with harsh tidal currents grow large, sharp spikes on their shells.
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Y
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Its shell is extremely hard. It cannot be shattered, even with a bomb. The shell opens only when it is attacking.
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Omega Ruby
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Cloyster is capable of swimming in the sea. It does so by swallowing water, then jetting it out toward the rear. This Pokémon shoots spikes from its shell using the same system.
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Alpha Sapphire
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Generation VII
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Sun
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Its hard shell cannot be shattered—not even by a bomb. The contents of the shell remain unknown.
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Moon
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Excavation of the tombs of ancient hunting tribes has turned up many spears tipped with spikes that had fallen off this Pokémon's shell.
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Game locations
In side games
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Generation II
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This Pokémon is unavailable in Generation II side games.
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In events
Held items
Stats
Base stats
Stat
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Range
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At Lv. 50
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At Lv. 100
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50
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110 - 157
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210 - 304
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95
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90 - 161
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175 - 317
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180
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166 - 255
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328 - 504
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85
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81 - 150
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157 - 295
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45
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45 - 106
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85 - 207
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70
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67 - 134
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130 - 262
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Total: 525
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Other Pokémon with this total
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- Minimum stats are calculated with 0 EVs, IVs of 0, and (if applicable) a hindering nature.
- Maximum stats are calculated with 252 EVs, IVs of 31, and (if applicable) a helpful nature.
- This Pokémon's Special base stat in Generation I was 85.
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Pokéathlon stats
Type effectiveness
Under normal battle conditions in Generation IX, this Pokémon is:
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Learnset
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- Bold indicates a move that gets STAB when used by Cloyster
- Italic indicates a move that gets STAB only when used by an evolution of Cloyster
- Click on the generation numbers at the top to see level-up moves from other generations
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- Bold indicates a move that gets STAB when used by Cloyster
- Italic indicates a move that gets STAB only when used by an evolution of Cloyster
- Click on the generation numbers at the top to see TM moves from other generations
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- Moves marked with an asterisk (*) must be chain bred onto Cloyster in Generation VI
- Moves marked with a double dagger (‡) can only be bred from a Pokémon who learned the move in an earlier generation.
- Moves marked with a superscript game abbreviation can only be bred onto Cloyster in that game.
- Bold indicates a move that gets STAB when used by Cloyster
- Italic indicates a move that gets STAB only when used by an evolution of Cloyster
- Click on the generation numbers at the top to see Egg moves from other generations
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- A black or white abbreviation in a colored box indicates that Cloyster can be tutored the move in that game
- A colored abbreviation in a white box indicates that Cloyster cannot be tutored the move in that game
- Bold indicates a move that gets STAB when used by Cloyster
- Italic indicates a move that gets STAB only when used by an evolution of Cloyster
- Click on the generation numbers at the top to see Move Tutor moves from other generations
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- Bold indicates a move that gets STAB when used by Cloyster
- Italic indicates a move that gets STAB only when used by an evolution of Cloyster
- Click on the generation numbers at the top to see moves from other generations
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TCG-only moves
Side game data
Evolution
Sprites
Trivia
Origin
It appears to be based on a bivalve of the genus Spondylus with a black pearl as its head.
Name origin
Cloyster may be a combination of clam and oyster. It may also be a play on cloister (to seclude or shelter oneself).
Parshen may be a combination of パール pearl and シェル shell.
In other languagesRelated articlesNotesExternal links