Cloyster
#172 in the HeartGold & SoulSilver Pokédex • Bivalve Pokémon
Cloyster
#172 in the HeartGold & SoulSilver Pokédex • Bivalve Pokémon
Stats
Min
Max
HP
50
210
304
Attack
95
175
317
Defense
180
328
504
Sp. Atk
85
157
295
Sp. Def
45
85
207
Speed
70
130
262
Total
525
Ranges are for Level 100. Max assumes a beneficial nature, 252 EVs, and 31 IVs; min assumes a hindering nature, 0 EVs, and 0 IVs.

Normal

Shiny
Cloyster
Bivalve Pokémon


Growth
| Pokédexes | Updated Johto #172 |
|---|---|
| EV yield | 2 Def |
| Catch rate | 60 |
| Base Exp. | 184 |
Eggs
| Egg Groups | |
|---|---|
| Gender | 50% male 50% female |
| Egg cycles | 20 (5,120 steps) |
Lore

HeartGold
Once it slams its shell shut, it is impossible to open, even by those with superior strength.

SoulSilver
CLOYSTER that live in seas with harsh tidal currents grow large, sharp spikes on their shells.
Evolution
| Pokémon | Requires | Evolution |
|---|---|---|
![]() Shellder #171 | Use Water Stone | ![]() Cloyster #172 |
Moves
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Supersonic | ![]() | Status | - | 55 | 20 | The user generates odd sound waves from its body. It may confuse the target. |
| Start | Aurora Beam | ![]() | Special | 65 | 100 | 20 | The foe is hit with a rainbow-colored beam. It may also lower the target’s Attack stat. |
| Start | Withdraw | ![]() | Status | - | - | 40 | The user withdraws its body into its hard shell, raising its Defense stat. |
| Start | Protect | ![]() | Status | - | - | 10 | It enables the user to evade all attacks. Its chance of failing rises if it is used in succession. |
| Start | Toxic Spikes | ![]() | Status | - | - | 20 | The user lays a trap of poison spikes at the foe’s feet. They poison foes that switch into battle. |
| 28 | Spikes | ![]() | Status | - | - | 20 | The user lays a trap of spikes at the foe’s feet. The trap hurts foes that switch into battle. |
| 40 | Spike Cannon | ![]() | Physical | 20 | 100 | 15 | Sharp spikes are fired at the foe to strike two to five times in rapid succession. |
Machines
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| TM03 | Water Pulse | ![]() | Special | 60 | 100 | 20 | The user attacks the foe with a pulsing blast of water. It may also confuse the foe. |
| TM06 | Toxic | ![]() | Status | - | 85 | 10 | A move that leaves the target badly poisoned. Its poison damage worsens every turn. |
| TM07 | Hail | ![]() | Status | - | - | 10 | The user summons a hailstorm lasting five turns. It damages all Pokémon except the Ice type. |
| TM10 | Hidden Power | ![]() | Special | 1 | 100 | 15 | A unique attack that varies in type and intensity depending on the Pokémon using it. |
| TM13 | Ice Beam | ![]() | Special | 95 | 100 | 10 | The foe is struck with an icy-cold beam of energy. It may also freeze the target solid. |
| TM14 | Blizzard | ![]() | Special | 120 | 70 | 5 | A howling blizzard is summoned to strike the foe. It may also freeze the target solid. |
| TM15 | Hyper Beam | ![]() | Special | 150 | 90 | 5 | The foe is attacked with a powerful beam. The user must rest on the next turn to regain its energy. |
| TM17 | Protect | ![]() | Status | - | - | 10 | It enables the user to evade all attacks. Its chance of failing rises if it is used in succession. |
| TM18 | Rain Dance | ![]() | Status | - | - | 5 | The user summons a heavy rain that falls for five turns, powering up Water- type moves. |
| TM21 | Frustration | ![]() | Physical | - | 100 | 20 | A full-power attack that grows more powerful the less the user likes its Trainer. |
| TM27 | Return | ![]() | Physical | - | 100 | 20 | A full-power attack that grows more powerful the more the user likes its Trainer. |
| TM32 | Double Team | ![]() | Status | - | - | 15 | By moving rapidly, the user makes illusory copies of itself to raise its evasiveness. |
| TM41 | Torment | ![]() | Status | - | 100 | 15 | The user torments and enrages the foe, making it incapable of using the same move twice in a row. |
| TM42 | Facade | ![]() | Physical | 70 | 100 | 20 | An attack move that doubles its power if the user is poisoned, paralyzed, or has a burn. |
| TM43 | Secret Power | ![]() | Physical | 70 | 100 | 20 | The user attacks with a secret power. Its added effects vary depending on the user’s environment. |
| TM44 | Rest | ![]() | Status | - | - | 5 | The user goes to sleep for two turns. It fully restores the user’s HP and heals any status problem. |
| TM45 | Attract | ![]() | Status | - | 100 | 15 | If it is the opposite gender of the user, the foe becomes infatuated and less likely to attack. |
| TM55 | Brine | ![]() | Special | 65 | 100 | 10 | If the foe’s HP is down to about half, this attack will hit with double the power. |
| TM58 | Endure | ![]() | Status | - | - | 10 | The user endures any attack with at least 1 HP. Its chance of failing rises if it is used in succession. |
| TM64 | Explosion | ![]() | Physical | 250 | 100 | 5 | The user explodes to inflict damage on all Pokémon in battle. The user faints upon using this move. |
| TM66 | Payback | ![]() | Physical | 50 | 100 | 10 | If the user can use this attack after the foe attacks, its power is doubled. |
| TM68 | Giga Impact | ![]() | Physical | 150 | 90 | 5 | The user charges at the foe using every bit of its power. The user must rest on the next turn. |
| TM72 | Avalanche | ![]() | Physical | 60 | 100 | 10 | An attack move that inflicts double the damage if the user has been hurt by the foe in the same turn. |
| TM78 | Captivate | ![]() | Status | - | 100 | 20 | If it is the opposite gender of the user, the foe is charmed into sharply lowering its Sp. Atk stat. |
| TM82 | Sleep Talk | ![]() | Status | - | - | 10 | While it is asleep, the user randomly uses one of the moves it knows. |
| TM83 | Natural Gift | ![]() | Physical | - | 100 | 15 | The user draws power to attack by using its held Berry. The Berry determines its type and power. |
| TM84 | Poison Jab | ![]() | Physical | 80 | 100 | 20 | The foe is stabbed with a tentacle or arm steeped in poison. It may also poison the foe. |
| TM87 | Swagger | ![]() | Status | - | 90 | 15 | The user enrages the foe into confusion. However, it also sharply raises the foe’s Attack stat. |
| TM90 | Substitute | ![]() | Status | - | - | 10 | The user makes a copy of itself using some of its HP. The copy serves as the user’s decoy. |
| HM03 | Surf | ![]() | Special | 95 | 100 | 15 | It swamps the entire battlefield with a giant wave. It can also be used for crossing water. |
| HM05 | Whirlpool | ![]() | Special | 15 | 70 | 15 | Traps the foe inside a whirlpool that lasts for two to five turns. The user can pass through whirlpools. |
Tutors
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Dive | ![]() | Physical | 80 | 100 | 10 | A two-turn attack. The user dives underwater on the first turn, then hits on the next turn. |
| Icy Wind | ![]() | Special | 55 | 95 | 15 | The user attacks with a gust of chilled air. It also lowers the target’s Speed stat. |
| Iron Defense | ![]() | Status | - | - | 15 | The user hardens its body’s surface like iron, sharply raising its Defense stat. |
| Signal Beam | ![]() | Special | 75 | 100 | 15 | The user attacks with a sinister beam of light. It may also confuse the target. |
| Snore | ![]() | Special | 40 | 100 | 15 | An attack that can be used only if the user is asleep. The harsh noise may also make the foe flinch. |
| Swift | ![]() | Special | 60 | - | 20 | Star-shaped rays are shot at the foe. This attack never misses. |
Traits
Shell Armor
Ability Slot 1
The Pokémon is protected against critical hits.
Protects against critical hits.
Skill Link
Ability Slot 2
Increases the frequency of multi-strike moves.
Extends two-to-five-hit moves and Triple Kick to their full length every time.








































Status
Special

Physical



