Cloyster
#91 in the FireRed and LeafGreen Pokédex • Bivalve Pokémon
FireRed
Its shell is extremely hard. It cannot be shattered, even with a bomb. The shell opens only when it is attacking.
LeafGreen
When attacked, it launches its horns in quick volleys. Its innards have never been seen.
Egg Group
Steps to Hatch
Effort Values Yielded
Gender Ratio
Capture Rate
Base Experience
| Pokémon | Requires | Evolution |
|---|---|---|
 Shellder #90 |  Use Water Stone |  Cloyster #91 |
Normal
Shiny
Cloyster
Bivalve Pokémon
HP
50
Attack
95
Defense
180
Sp. Atk
85
Sp. Def
45
Speed
70
Total
525
Type Chart
Weaknesses
Takes 2× from
Resistances
Takes 0.25× from
Takes 0.5× from
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Supersonic |  |  Status | - | 55 | 20 | The user generates odd sound waves. It may confuse the foe. |
| Start | Aurora Beam | |  Special | 65 | 100 | 20 | A rainbow-colored attack beam. It may lower the foe’s ATTACK stat. |
| Start | Withdraw | | Status | - | - | 40 | The user withdraws its body in its hard shell, raising its DEFENSE stat. |
| Start | Protect | | Status | - | - | 10 | Enables the user to evade all attacks. It may fail if used in succession. |
| 36 | Spikes |  | Status | - | - | 20 | A trap of spikes is laid around the foe’s party to hurt foes switching in. |
| 43 | Spike Cannon | |  Physical | 20 | 100 | 15 | Sharp spikes are fired at the foe to strike two to five times. |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| HM03 | Surf | | Special | 95 | 100 | 15 | A big wave crashes down on the foe. Can also be used for crossing water. |
| HM08 | Dive | | Physical | 60 | 100 | 10 | The user dives underwater on the first turn and strikes next turn. |
| TM03 | Water Pulse | | Special | 60 | 100 | 20 | An attack with a pulsing blast of water. It may also confuse the foe. |
| TM06 | Toxic |  | Status | - | 85 | 10 | A move that badly poisons the foe. Its poison damage worsens every turn. |
| TM07 | Hail | | Status | - | - | 10 | A hailstorm lasting five turns damages all Pokémon except the ICE-type. |
| TM10 | Hidden Power | | Special | 1 | 100 | 15 | An attack that varies in type and intensity depending on the user. |
| TM13 | Ice Beam | | Special | 95 | 100 | 10 | The foe is struck with an icy beam. It may freeze the foe solid. |
| TM14 | Blizzard | | Special | 120 | 70 | 5 | The foe is blasted with a blizzard. It may freeze the foe solid. |
| TM15 | Hyper Beam | | Special | 150 | 90 | 5 | A severely damaging attack that makes the user rest on the next turn. |
| TM17 | Protect | | Status | - | - | 10 | Enables the user to evade all attacks. It may fail if used in succession. |
| TM18 | Rain Dance | | Status | - | - | 5 | A heavy rain falls for five turns, powering up WATER- type moves. |
| TM21 | Frustration | | Physical | - | 100 | 20 | This attack move grows more powerful the less the user likes its TRAINER. |
| TM27 | Return | | Physical | - | 100 | 20 | This attack move grows more powerful the more the user likes its TRAINER. |
| TM32 | Double Team | | Status | - | - | 15 | The user creates illusory copies of itself to raise its evasiveness. |
| TM41 | Torment |  | Status | - | 100 | 15 | It enrages the foe, making it incapable of using the same move successively. |
| TM42 | Facade | | Physical | 70 | 100 | 20 | An attack that is boosted if user is burned, poisoned, or paralyzed. |
| TM43 | Secret Power | | Physical | 70 | 100 | 20 | An attack that may have an additional effect that varies with the terrain. |
| TM44 | Rest |  | Status | - | - | 5 | The user sleeps for two turns to fully restore HP and heal any status problem. |
| TM45 | Attract | | Status | - | 100 | 15 | If it is the other gender, the foe is made infatuated and unlikely to attack. |
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Double-Edge | | Physical | 120 | 100 | 15 | A reckless, life- risking tackle that also hurts the user a little. |
| Explosion | | Physical | 250 | 100 | 5 | The user explodes to inflict terrible damage even while fainting itself. |
| Mimic | | Status | - | - | 10 | The user copies the move last used by the foe for the rest of the battle. |
| Substitute | | Status | - | - | 10 | The user creates a decoy using one- quarter of its full HP. |
Shell Armor
Blocks critical hits.
Protects against critical hits.
Skill Link
Extends two-to-five-hit moves and Triple Kick to their full length every time.