Cloyster
Ruby/Sapphire

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.

Emerald

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.

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.

Evolution Chain

shellder
Shellder
cloyster
Cloyster

Pokédex & Training Data

Classification Bivalve Pokémon
Height 1.5 m (4'11")
Weight 132.5 kg (292.1 lbs)
EV Yield +2 defense
Catch Rate 60
Base Friendship 70
Growth Rate slow
Gender Ratio
♂ ♀
Egg Groups Water3

Pokédex Numbers

Kanto (R/B/Y) #091
Johto (G/S/C) #170
Johto (HG/SS) #172
Kalos (Coastal) #037
Alola (S/M) #116
Alola (US/UM) #139
Galar (Sw/Sh) #151
Paldea (S/V) #330
National #091
Isle of Armor #132

Held Items

Pearl 50%

Learned Moves

Level Up Moves

Ruby/Sapphire
Lvl Name Class Power Acc. PP Effect
1 Supersonic
— 55% 20 Confuses the target.
1 Aurora Beam
65 100% 20 Has a 10% chance to lower the target’s Attack by one stage.
1 Withdraw
— — 40 Raises the user’s Defense by one stage.
1 Protect
— — 10 Prevents any moves from hitting the user this turn.
33 Spikes
— — 20 Scatters Spikes, hurting opposing Pokémon that switch in.
41 Spike Cannon
20 100% 15 Hits 2-5 times in one turn.
Emerald
Lvl Name Class Power Acc. PP Effect
1 Supersonic
— 55% 20 Confuses the target.
1 Aurora Beam
65 100% 20 Has a 10% chance to lower the target’s Attack by one stage.
1 Withdraw
— — 40 Raises the user’s Defense by one stage.
1 Protect
— — 10 Prevents any moves from hitting the user this turn.
33 Spikes
— — 20 Scatters Spikes, hurting opposing Pokémon that switch in.
41 Spike Cannon
20 100% 15 Hits 2-5 times in one turn.
FireRed/LeafGreen
Lvl Name Class Power Acc. PP Effect
1 Supersonic
— 55% 20 Confuses the target.
1 Aurora Beam
65 100% 20 Has a 10% chance to lower the target’s Attack by one stage.
1 Withdraw
— — 40 Raises the user’s Defense by one stage.
1 Protect
— — 10 Prevents any moves from hitting the user this turn.
36 Spikes
— — 20 Scatters Spikes, hurting opposing Pokémon that switch in.
43 Spike Cannon
20 100% 15 Hits 2-5 times in one turn.

TM/HM Moves

Ruby/SapphireEmeraldFireRed/LeafGreen
Name Class Power Acc. PP Effect
HM03 Surf
90 100% 15 Inflicts regular damage and can hit Dive users.
HM08 Dive
80 100% 10 User dives underwater, dodging all attacks, and hits next turn.
TM03 Water Pulse
60 100% 20 Has a 20% chance to confuse the target.
TM06 Toxic
— 90% 10 Badly poisons the target, inflicting more damage every turn.
TM07 Hail
— — 10 Changes the weather to a hailstorm for five turns.
TM10 Hidden Power
60 100% 15 Power and type depend upon user’s IVs. Power can range from 30 to 70.
TM13 Ice Beam
90 100% 10 Has a 10% chance to freeze the target.
TM14 Blizzard
110 70% 5 Has a 10% chance to freeze the target.
TM15 Hyper Beam
150 90% 5 User foregoes its next turn to recharge.
TM17 Protect
— — 10 Prevents any moves from hitting the user this turn.
TM18 Rain Dance
— — 5 Changes the weather to rain for five turns.
TM21 Frustration
— 100% 20 Power increases as happiness decreases, up to a maximum of 102.
TM27 Return
— 100% 20 Power increases with happiness, up to a maximum of 102.
TM32 Double Team
— — 15 Raises the user’s evasion by one stage.
TM41 Torment
— 100% 15 Prevents the target from using the same move twice in a row.
TM42 Facade
70 100% 20 Power doubles if user is burned, paralyzed, or poisoned.
TM43 Secret Power
70 100% 20 Has a 30% chance to inflict a status effect which depends upon the terrain.
TM44 Rest
— — 5 User sleeps for two turns, completely healing itself.
TM45 Attract
— 100% 15 Target falls in love if it has the opposite gender, and has a 50% chance to refuse attacking the user.

Tutor Moves

Emerald
Name Class Power Acc. PP Effect
Double Edge
120 100% 15 User receives 1/3 the damage inflicted in recoil.
Endure
— — 10 Prevents the user’s HP from lowering below 1 this turn.
Explosion
250 100% 5 User faints.
Icy Wind
55 95% 15 Has a 100% chance to lower the target’s Speed by one stage.
Mimic
— — 10 Copies the target’s last used move.
Sleep Talk
— — 10 Randomly uses one of the user’s other three moves. Only works if the user is sleeping.
Snore
50 100% 15 Has a 30% chance to make the target flinch. Only works if the user is sleeping.
Substitute
— — 10 Transfers 1/4 of the user’s max HP into a doll, protecting the user from further damage or status changes until it breaks.
Swagger
— 85% 15 Raises the target’s Attack by two stages and confuses the target.
Swift
60 — 20 Never misses.
FireRed/LeafGreen
Name Class Power Acc. PP Effect
Double Edge
120 100% 15 User receives 1/3 the damage inflicted in recoil.
Explosion
250 100% 5 User faints.
Mimic
— — 10 Copies the target’s last used move.
Substitute
— — 10 Transfers 1/4 of the user’s max HP into a doll, protecting the user from further damage or status changes until it breaks.

Base Stats

Hp 50
Attack 95
Defense 180
Sp. Atk 85
Sp. Def 45
Speed 70
Total 525

Type Defenses

(vs. Gen 6+ rules)

0.5x
2x
2x
0.25x
2x
2x