Is Gyarados viable in Gen 4 OU?

Gyarados is ranked #6 in Gen 4 OU with 26.34% usage according to Smogon Jul 2026 - Sep 2026 data.

What beats Gyarados in Gen 4 OU?

Jirachi has the strongest conservative score in this observed Jul 2026 - Sep 2026 sample. The target was knocked out or switched out in 58.7% of 88.18059694905372 relevant encounters. Standard error is 5.2 points. Sets and switch conditions can change the result.

How are Gyarados matchup checks ranked in Gen 4 OU?

They are ranked by p minus four standard errors. Here, p is the observed fraction of relevant encounters where Gyarados was knocked out or switched out. This is not a set-specific battle guarantee.

Gyarados counters

Gen 4 OU · Smogon source period Jul 2026 - Sep 2026

#0130 Gyarados

WaterFlying

USAGE 26.3% #6

ABILITYIntimidate

BASE STATS

HP 95

ATK 125

DEF 79

SPA 60

SPD 100

SPE 81

BST540

TYPE MATCHUPS

4×

Electric

2×

Rock

½×

FireWaterFightingBugSteel

0×

Ground

Moves

Waterfall 99.9% Dragon Dance 73.3% Earthquake 43.1% Ice Fang 25.6% Taunt 23.8% Outrage 18.4% Substitute 17.7% Stone Edge 16.6%

Items

Leftovers 53.0% Lum Berry 19.5% Choice Band 15.6% Wacan Berry 9.1% Life Orb 1.9% Choice Scarf 0.2% Custap Berry 0.2% Enigma Berry 0.2%

Abilities

Intimidate100.0%

Common Teammates

Browse Gen 4 OU teams using Gyarados →

Explore Gyarados + Jirachi teams 38 score Explore Gyarados + Rotom-Wash teams 34 score Explore Gyarados + Latias teams 34 score Explore Gyarados + Gyarados teams 24 score Explore Gyarados + Scizor teams 8 score Explore Gyarados + Tyranitar teams 3 score

Leading observed checks

Open a matchup for a separate set-based damage estimate, or browse uploaded teams with both Pokémon.

Team core to explore

Gyarados + Tyranitar 69.3% teammate usage Explore teams →

Checks & Counters

Observed target KO or switch rate is upstream p: the fraction of relevant encounters where the target was knocked out or switched out. Standard error is upstream d. The conservative score is p − 4d. These ladder observations do not prove a set-specific counter.

How to read this table

Use encounter count and standard error to judge the sample. Damage estimates below use inferred sets and remain separate from the observed ladder metric.

# Checker Encounters Conservative score Target KO or switch rate

Jirachi

SteelPsychic DEFENSIVE CHECK View matchup

88.181

37.8

58.7% Standard error 5.24 points

DAMAGE CALC

252+ Atk Gyarados Earthquake vs. 252 HP / 252+ Def Jirachi: 170-200 (42 - 49.5%) -- guaranteed 3HKO after Leftovers recovery

View Jirachi counters → Teams with Jirachi →

Rotom-Wash

ElectricWater OFFENSIVE CHECK View matchup

20.156

33.9

73.3% Standard error 9.85 points

DAMAGE CALC

252+ SpA Rotom-Wash Thunderbolt vs. 252 HP / 252+ SpD Gyarados: 424-504 (107.6 - 127.9%) -- guaranteed OHKO

View Rotom-Wash counters → Teams with Rotom-Wash →

Latias

DragonPsychic SOFT CHECK View matchup

113.707

33.9

52.6% Standard error 4.68 points

DAMAGE CALC

252+ SpA Choice Specs Latias Thunderbolt vs. 252 HP / 252+ SpD Gyarados: 436-516 (110.6 - 130.9%) -- guaranteed OHKO

View Latias counters → Teams with Latias →

Gyarados

WaterFlying SOFT CHECK View matchup

85.036

23.6

45.2% Standard error 5.40 points

DAMAGE CALC

252+ Atk Gyarados Stone Edge vs. 252 HP / 0 Def Gyarados: 282-334 (71.5 - 84.7%) -- guaranteed 2HKO after Leftovers recovery

View Gyarados counters → Teams with Gyarados →

Scizor

BugSteel SOFT CHECK View matchup

24.249

8.4

49.0% Standard error 10.15 points

DAMAGE CALC

252+ Atk Technician Scizor Bug Bite vs. 252 HP / 0 Def Gyarados: 98-116 (24.8 - 29.4%) -- guaranteed 5HKO after Leftovers recovery

View Scizor counters → Teams with Scizor →

Tyranitar

RockDark SOFT CHECK View matchup

75.159

3.4

22.7% Standard error 4.83 points

DAMAGE CALCSand

252+ Atk Choice Band Tyranitar Stone Edge vs. 252 HP / 0 Def Gyarados: 668-788 (169.5 - 200%) -- guaranteed OHKO

View Tyranitar counters → Teams with Tyranitar →

Swampert

WaterGround SOFT CHECK View matchup

27.086

-12.3

15.4% Standard error 6.94 points

DAMAGE CALC

252+ Atk Swampert Ice Punch vs. 252 HP / 0 Def Gyarados: 96-114 (24.3 - 28.9%) -- possible 5HKO

View Swampert counters → Teams with Swampert →

Heatran

FireSteel SOFT CHECK View matchup

22.201

-15.2

8.7% Standard error 5.97 points

DAMAGE CALC

252+ Atk Heatran Explosion vs. 252 HP / 0 Def Gyarados: 564-664 (143.1 - 168.5%) -- guaranteed OHKO

View Heatran counters → Teams with Heatran →

Ranked #6 with 26.34% usage. Sorted by conservative score.