Is Cloyster viable in Gen 1 OU?

Cloyster is ranked #11 in Gen 1 OU with 18.95% usage according to Smogon Feb 2026 - Apr 2026 data.

What beats Cloyster in Gen 1 OU?

The best counter for Cloyster in Gen 1 OU is Zapdos with a 52.6% win rate when they meet. Based on Smogon's Feb 2026 - Apr 2026 usage data, the top Pokémon that beat Cloyster include Zapdos, Starmie, Cloyster, Alakazam, Jynx.

What is the best counter for Cloyster in Gen 1 OU?

Zapdos is the best counter for Cloyster in Gen 1 OU, KOing or forcing it out in 52.6% of their encounters.

Cloyster counters

Gen 1 OU · Sorted by reliability score · Smogon · Feb 2026 - Apr 2026

#0091 Cloyster

WaterIce

USAGE 19.0% #11

BASE STATS

HP 50

ATK 95

DEF 180

SPA 85

SPD 45

SPE 70

BST525

TYPE MATCHUPS

2×

ElectricGrassFightingRock

½×

Water

¼×

Ice

Moves

Clamp 99.8% Explosion 99.6% Blizzard 97.7% Rest 93.8% Hyper Beam 4.7% Ice Beam 2.4% Double-Edge 0.8% Surf 0.5%

Items

nothing 100.0%

Common Teammates

Checks & Counters

Ranked by reliability — blends KO rate with how often each Pokémon is matched up.

# Checker Encounters Reliability KO Rate

Zapdos

ElectricFlying SOFT CHECK

55.863

52.6% dies 9.36%

Starmie

WaterPsychic SOFT CHECK

360.971

51.1% dies 4.53%

Cloyster

WaterIce SOFT CHECK

177.337

41.8% dies 6.33%

Alakazam

Psychic SOFT CHECK

68.56

40.8% dies 8.39%

Jynx

IcePsychic SOFT CHECK

162.604

40.4% dies 6.60%

Tauros

Normal SOFT CHECK

372.849

26.1% dies 3.92%

Chansey

Normal SOFT CHECK

330.371

22.2% dies 3.92%

Exeggutor

GrassPsychic SOFT CHECK

187.739

20.4% dies 5.06%

Snorlax

Normal SOFT CHECK

312.906

12.4% dies 3.22%

Rhydon

GroundRock SOFT CHECK

84.159

9.7% dies 5.28%

Ranked #11 with 18.95% usage. Sorted by reliability score.