#091 Cloyster
Cloyster
Male: 50%   Female: 50%
Types
Water Ice
Name Number Japanese Name
Cloyster 091 Parshen
Pronunciation Species
CLOY-STIR Bivalve Pokémon
Name Meaning
Comes from CLOISTER (note spelling) and OYSTER. Cloister means to close or shut away from the world.
Height Weight
4' 11" 1.50 m 292.0 lb 131.40 kg
Evolutions
Shellder Water Stone⇨ Cloyster
Pokedex Entries
Red Blue When attacked, it launches its horns in quick volleys. Its innards have never been seen.
Yellow For protection, it uses its harder-than-diamonds shell. It also shoots spikes from the shell.
Stadium Its shell is so hard, it can even withstand a bomb. No one had ever seen what is inside its shell.
Gold Stadium 2 Once it slams it shell shut, it is impossible to open, even by those with superior strength.
Silver Cloyster that live in seas with harsh tidal currents grow large, sharp spikes on their shells.
Crystal Even a missile can’t break the spikes it uses to stab opponents. They're even harder than its shell.
Locations Found Time Rarity
Blue Must Evolve from Shellder by using a Water Stone NA Evolve
Red NA Evolve
Yellow NA Evolve
Gold Any Evolve
Silver Any Evolve
Crystal Any Evolve
How to Catch
Ground Surf Fishing Forest Tree Mountain Tree Rock Smash Breed Evolve Event BugCatch Game Corner
R/B     X    
Yellow   X    
G/S       X    
Crystal       X    
Weaknesses (Defense)
Normal = x1 Fire = x1 Water = x0.5 Electric = x2 Grass = x2 Ice = x0.25
Fighting = x2 Poison = x1 Ground = x1 Flying = x1 Psychic = x1 Bug = x1
Rock = x2 Ghost = x1 Dragon = x1 Dark = x1 Steel = x1
G S C
Total Weaknesses= 4/17
Total Resistances= 2/17
Defense Ratio= 2 : 1 ⇨ 200%
 R B Y
Total Weaknesses= 4/15
Total Resistances= 2/15
Defense Ratio= 2 : 1 ⇨ 200%
GSC vs RBY: This pokémon has the same number of weaknesses and advantages in GSC as RBY. Therefore their defense ratios are the same.
Advantages (Offense)
Normal =
1st: Normal
2nd: Normal 		Fire =
1st (GSC): Good
2nd (GSC): Bad
1st (RBY): Good
2nd (RBY): Normal 		Water =
1st: Bad
2nd: Bad 		Electric =
1st: Normal
2nd: Normal 		Grass =
1st: Bad
2nd: Good 		Ice =
1st: Normal
2nd: Bad
Fighting =
1st: Normal
2nd: Normal 		Poison =
1st: Normal
2nd: Normal 		Ground =
1st: Good
2nd: Good 		Flying =
1st: Normal
2nd: Good 		Psychic =
1st: Normal
2nd: Normal 		Bug =
1st: Normal
2nd: Normal
Rock =
1st: Good
2nd: Normal 		Ghost =
1st: Normal
2nd: Normal 		Dragon =
1st: Bad
2nd: Good 		Dark =
1st: Normal
2nd: Normal 		Steel =
1st: Normal
2nd: Bad
Total Advantages (GSC)= 7/34
Total Disadvantages (GSC)= 7/34
Offensive Ratio (GSC)= 1:1 (Adv : Dis) ⇨ 100% 		Total Advantages (RBY)= 7/30
Total Disadvantages (RBY)= 5/30
Offensive Ratio (RBY)= 7:5 (Adv : Dis) ⇨ 140%
Natural Learned Attacks
Note: Attacks in white are physical attacks, Attacks in blue are special attacks, and Attacks in yellow are techniques with no direct damage. To view what an attack/ability is Click Here for Red/Blue/Yellow or Click Here for Gold/Silver/Crystal. (Opens in new window)
R B Y G S C Attacks Type
- Tackle NRM
- Withdraw WTR
  Supersonic NRM
Aurora Beam ICE
    Protect NRM
  Leer NRM
Clamp WTR
Ice Beam ICE
    33 Spikes GRD
50 41 Spike Cannon NRM
Moves Learned from Move Tutor (Crystal)
Ice Beam
TM/HM Capibilities - Gold/Silver/Crystal         (Move cursor over TM/HMs and hold it to find out what it is)
TM 01 TM 02 TM 03 TM 04 TM 05 TM 06 TM 07 TM 08 TM 09 TM 10
TM 11 TM 12 TM 13 TM 14 TM 15 TM 16 TM 17 TM 18 TM 19 TM 20
TM 21 TM 22 TM 23 TM 24 TM 25 TM 26 TM 27 TM 28 TM 29 TM 30
TM 31 TM 32 TM 33 TM 34 TM 35 TM 36 TM 37 TM 38 TM 39 TM 40
TM 41 TM 42 TM 43 TM 44 TM 45 TM 46 TM 47 TM 48 TM 49 TM 50
HM 01 HM 02 HM 03 HM 04 HM 05 HM 06 HM 07  
TM/HM Capibilities - Red/Blue/Yellow
TM 01 TM 02 TM 03 TM 04 TM 05 TM 06 TM 07 TM 08 TM 09 TM 10
TM 11 TM 12 TM 13 TM 14 TM 15 TM 16 TM 17 TM 18 TM 19 TM 20
TM 21 TM 22 TM 23 TM 24 TM 25 TM 26 TM 27 TM 28 TM 29 TM 30
TM 31 TM 32 TM 33 TM 34 TM 35 TM 36 TM 37 TM 38 TM 39 TM 40
TM 41 TM 42 TM 43 TM 44 TM 45 TM 46 TM 47 TM 48 TM 49 TM 50
HM 01 HM 02 HM 03 HM 04 HM 05  
Breeding Information (GSC Feature Only)
Note: When ever a pokémon "Family" is mentioned, it means all of the pokémon that are related by evolution. The lowest level adult pokémon of a Family are always used in front of the word "Family". (for example: the Chikorita Family refers to Chikorita, Bayleef, and Meganium)
Breeding Groups: Group 10 - Water 3 Pokémon -
Pokémon Compatibility:
Egg Moves: Barrier Mate with a male Tentacool/Tentacruel.
Bubblebeam Mate with a male Corsola or Tentacool/Tentacruel.
Rapid Spin Breed a male from Squirtle Family and a female Kabuto/Kabutops, then breed the male offspring with a female Shellder/Cloyster.
Screech Mate with a male Tentacool/Tentacruel.
Take Down Teach RBY TM09 (Take Down) to a pokémon from Kabuto, Krabby, Omanyte, Shellder, or Tentacool Family and trade it to GSC. If male, mate with a female Shellder/Cloyster.
Stats Base Min-Max (L100) GSC
%ile		 GSC
Rank		 RBY
%ile		 RBY
Rank
Hit Points: 50
 273-303 27.43% 32/45 30.85% 29/42
Attack: 95
 258-288 80.20% 9/49 80.20% 9/45
Defense: 180
 428-458 99.98% 3/55 100.00% 1/44
Speed: 70
 208-238 55.96% 23/47 50.00% 22/42
Special Attack (G S C): 85
 238-268 75.80% 13/46  
Special Defense (G S C): 45
 158-188 18.41% 34/41
Special (R B Y): 85
 238-268   70.86% 12/29
Total: G S C: 525 R B Y: 480 G S C:
1563-1743		 R B Y:
1405-1555		 86.43% 9/87 95.03% 6/65

⇦ #090 Shellder | #092 Gastly ⇨

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