Ground moves don't affect Gyarados at all — that's the advantage of Water/Flying typing. Intimidate lowers the opponent's Attack on switch-in. An original Gen 1 pick. It needs some investment to avoid getting outsped.
Attack and Sp. Def carry most of Gyarados's stat budget. Sp. Atk's the obvious dump stat. Tough to catch and yields 2 Attack EVs. Follows a slow 1.25M XP grind.
I suspect this Pokémon to be the true identity of a dragon written of in ancient texts, which claimed that it razed an entire village with white-hot beams from its maw.
Gyarados Weakness
ExcellentType-wise, Gyarados takes extra damage from Electric and Rock. Watch out for Electric attacks, those deal 4x damage. Ground moves do nothing thanks to a full immunity. 5 resistances help offset the weaknesses. With 95 HP and balanced defenses, Gyarados can afford to eat a neutral hit or two.
Evolved from Magikarp. Gyarados is the final form in this two-stage line. A small partner pool for breeding via two egg groups. Eggs are hatches fast. Attack grew the most through evolution (+115 over Magikarp), and Gyarados peaks at 540 total stats.
How to Evolve
Find one free turn for Dragon Dance and Gyarados can run through teams. Adamant nature leans physical, Moxie supports the sweep, and double STAB stops anything from walling it cleanly.
Best Build
Legends: Arceus uses different battle mechanics.
Competitive build content is not applicable for this game. Select a main series game for builds.
A solid spread overall. Gyarados gets Hurricane and Hydro Pump for same-type damage alongside coverage across 10 types. It won't blow anyone away, but it doesn't leave you stuck either.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
4 encounter spots for Gyarados at decent spawn rates starting from mid-game routes. Best and Earliest sort options below help narrow down your approach based on odds vs. Accessibility.
Where To Catch Gyarados in Legends: Arceus
To get Gyarados, start by catching Magikarp through walking encounters at walking. The chain covers 2 catchable stages before reaching the final form.
Step 1Catch MagikarpEASYFabled SpringGrassUncommonEASYLake VerityGrassUncommonWaterEASYObsidian FallsGrassUncommonWater
Step 2Gyarados ✓EASYLake VerityGrassUncommonWaterEASYObsidian FallsGrassUncommonWaterEASYPrimeval GrottoGrassUncommonCaveEASYSand's ReachGrassUncommonDesertor evolve from Magikarp (Step 1)
Intimidate changes the entire equation for Gyarados. The 540 BST doesn't tell the full story. Ranked B-Tier as a wallbreaker.
Magikarp evolves into Gyarados at level 20. Gyarados is the fully evolved form. At 540 BST, it's got solid stats to work with.
Intimidate is what you want on Gyarados. Every competitive set worth running is built with that ability in mind. The alternatives (Moxie) work on paper but Intimidate is what makes Gyarados worth using. Intimidate synergizes with Gyarados's base 100 Sp.Def, letting it soak special attacks as a pivot.
Base 81 Speed is workable — faster than some, slower than many. On offense, Gyarados is a physical attacker with base 125 Attack. Defensively? Enough bulk to take a hit or two. Best used as a wallbreaker.
Gyarados appears in 22 games, including Yellow, Red & Blue, and Gold & Silver.
Since debuting in Red & Blue, Gyarados has appeared in 22 titles over 9 generations. Along the way, it received a Mega form in Generation 7, keeping it relevant across different competitive metas.
- Gen IY
Yellow - Gen IRBDebut

Red & Blue - Gen IIGS

Gold & Silver - Gen IIC
Crystal - Gen IIIRS

Ruby & Sapphire - Gen IIIFRLG

FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS

HeartGold & SoulSilver - Gen IVDP

Diamond & Pearl - Gen VBW

Black & White - Gen VB2W2

Black 2 & White 2 - Gen VIXY

X & Y - Gen VIORASMega

Omega Ruby & Alpha Sapphire - Gen VIIUSUM

Ultra Sun & Ultra Moon - Gen VIISM

Sun & Moon - Gen VIILGPE

Let's Go Pikachu & Eevee - Gen VIIISwSh

Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP

Brilliant Diamond & Shining Pearl - Gen IXSV

Scarlet & Violet - Gen IXLZA
Legends: Z-A