On paper, Gastrodon looks underwhelming. In practice, Storm Drain redirects Water moves and boosts its Sp. Atk — and that's the whole story. Water/Ground typing means Electric moves can't touch it, and only a single type hits it super-effectively. Known as the Sea Slug Pokemon.
Gastrodon's spread is anchored by HP, with balanced defenses backing it up. Speed is the clear weak point. Worth 2 HP EVs per KO, and the medium-fast 1M XP curve keeps leveling painless.
Its whole body is sticky with mucus. In the past, this form of Gastrodon was by far the more numerous one.
It appears on beaches where the waters are shallow. Once it catches prey, it will slowly melt them with its mucus before slurping them up.
Gastrodon Weakness
GoodGastrodon's Water/Ground typing leaves it vulnerable to Grass moves. Grass hits land at 4x, so they're the biggest threat. It shrugs off Electric-type attacks completely. It resists 4 types, giving it decent defensive coverage. Storm Drain grants an additional Water immunity, reshaping the matchup chart. With 111 HP and balanced defenses, Gastrodon can afford to eat a neutral hit or two.
Gastrodon is the evolved form of Shellos. Breeding produces Shellos eggs, and they're average hatch time. Evolving from Shellos gave Gastrodon the biggest boost in HP (+35), bringing the total to 475 stats.
How to Evolve
Breed with Gastrodon to get Shellos eggs easily using 63 partners from the Indeterminate and Water1 egg groups.
Spikes is the priority every time Gastrodon comes in. Relaxed nature and max HP and Defense EVs keep it alive long enough to get layers down, while Rocky Helmet provides chip damage on every physical hit received. Stormdrain rounds it out. Recover keeps it healthy between hits.
Best Build
Best Gastrodon Moveset
- Recover
- Earth Power
- Ice Beam
- Spikes
Recommended Teammates
Without TMs, Gastrodon's movepool is bare bones. With them, you get Rock and Normal coverage and more on top of Hydro Pump and Earthquake for STAB. The natural kit handles basics, but TMs are doing the real work.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Gastrodon's movepool balances level-up moves with TM options. Consistent STAB comes from Hydro Pump and Earth Power, and Normal and Rock coverage and more keeps opponents from switching in for free. No major gaps here.
The natural movepool does the job, but Acid Armor and Amnesia from the egg pool give Gastrodon something extra.
The natural movepool does the job, but Acid Armor and Clear Smog from the egg pool give Gastrodon something extra. Pair those with Hydro Pump and Earthquake for STAB and coverage across 7 types for reach, and the kit fills out nicely.
moderate rates across 10 locations for Gastrodon in mid-game routes. Scroll the sorted list below and pick whichever spot sits closest to your current route. The rate differences between locations are worth comparing.
Where To Catch Gastrodon in Scarlet & Violet
The path to Gastrodon starts with Shellos at Lv. 16-55 via walking encounters. 2 catchable stages total, with locations listed for each one below.
Step 1Catch ShellosEFFORTLESSEast Province (Area One) - BeachScarletOverworldLv.16-3436%MidRouteEast SeaEFFORTLESSEast Province (Area One) - BeachVioletOverworldLv.16-3436%MidRouteEast SeaEFFORTLESSNorth Province (Area One) - BeachVioletOverworldLv.16-3436%MidRouteEast SeaEFFORTLESSNorth Province (Area One) - BeachScarletOverworldLv.16-3436%MidRouteEast SeaEFFORTLESSSouth Province (Area Five) - BeachVioletOverworldLv.16-3436%MidRouteEast SeaEFFORTLESSSouth Province (Area Five) - BeachScarletOverworldLv.16-3436%MidRouteEast SeaEFFORTLESSWest Province (Area Two) - BeachVioletOverworldLv.16-3436%MidRouteWest SeaEFFORTLESSWest Province (Area Two) - BeachScarletOverworldLv.16-3436%MidRouteWest SeaMODERATECasseroya Lake - BeachScarletOverworldLv.30-558%MidWaterWest SeaMODERATECasseroya Lake - BeachVioletOverworldLv.30-558%MidWaterWest Sea
Step 2Gastrodon ✓MODERATECasseroya Lake - BeachScarletOverworldLv.30-558%MidWaterWest SeaMODERATECasseroya Lake - BeachVioletOverworldLv.30-558%MidWaterWest SeaMODERATEEast Province (Area One) - BeachScarletOverworldLv.30-498%MidRouteEast SeaMODERATEEast Province (Area One) - BeachVioletOverworldLv.30-498%MidRouteEast SeaMODERATENorth Province (Area One) - BeachVioletOverworldLv.30-498%MidRouteEast SeaMODERATENorth Province (Area One) - BeachScarletOverworldLv.30-498%MidRouteEast SeaMODERATESouth Province (Area Five) - BeachVioletOverworldLv.30-498%MidRouteEast SeaMODERATESouth Province (Area Five) - BeachScarletOverworldLv.30-498%MidRouteEast SeaMODERATEWest Province (Area Two) - BeachVioletOverworldLv.30-558%MidRouteWest SeaMODERATEWest Province (Area Two) - BeachScarletOverworldLv.30-558%MidRouteWest Seaor evolve from Shellos (Step 1)
Gastrodon starts showing up in mid-game routes at decent spawn rates across 3 encounter spots. The list below is sorted so you can pick what fits your current progress without scrolling through everything.
Where To Catch Gastrodon in Legends: Arceus
Shellos is your first catch on the way to Gastrodon. You'll find walking encounters from walking across 7 total spots in the chain.
Step 1Catch ShellosEASYRamanas IslandGrassUncommonWaterEASYSandgem FlatsGrassUncommonDesertEASYSeagrass HavenGrassUncommonEASYTranquility CoveGrassUncommon
Step 2Gastrodon ✓EASYRamanas IslandGrassUncommonWaterEASYSandgem FlatsGrassUncommonDesertEASYSeagrass HavenGrassUncommonor evolve from Shellos (Step 1)
Gastrodon's scattered across 18 spots in mid-game routes with high spawn rates. Check the list below for the closest location to wherever you are in the game. This one's quick.
Where To Catch Gastrodon in Brilliant Diamond & Shining Pearl
Shellos is your first catch on the way to Gastrodon. You'll find walking encounters from Lv. 7-53 across 38 total spots in the chain.
- Step 1Catch ShellosEFFORTLESSRoute 205 - SouthBrilliant DiamondGrassLv.8-1045%EarlyRouteEFFORTLESSRoute 205 - SouthShining PearlGrassLv.8-1045%EarlyRouteEFFORTLESSValley WindworksBrilliant DiamondGrassLv.7-930%EarlyPower-plantEFFORTLESSValley WindworksShining PearlGrassLv.7-930%EarlyPower-plantMODERATERoute 205 - NorthBrilliant DiamondGrassLv.1110%EarlyRouteMODERATERoute 205 - NorthShining PearlGrassLv.1110%EarlyRouteEFFORTLESSRoute 213Brilliant DiamondGrassLv.20-2250%MidRouteNightEFFORTLESSRoute 213Shining PearlGrassLv.20-2250%MidRouteNightEFFORTLESSRoute 213Brilliant DiamondGrassLv.20-2240%MidRouteMorning/dayEFFORTLESSRoute 213Shining PearlGrassLv.20-2240%MidRouteMorning/dayEASYFuego IronworksBrilliant DiamondGrassLv.2820%MidPower-plantEASYFuego IronworksShining PearlGrassLv.2820%MidPower-plantEASYRoute 218Brilliant DiamondGrassLv.2820%MidRouteEASYRoute 218Shining PearlGrassLv.2820%MidRouteFountainspring CaveBrilliant DiamondGrassLv.16-20MidCaveFountainspring CaveShining PearlGrassLv.16-20MidCaveMODERATERoute 221Brilliant DiamondGrassLv.2810%MidRouteMODERATERoute 221Shining PearlGrassLv.2810%MidRouteHARDRoute 224Brilliant DiamondGrassLv.231%MidRouteHARDRoute 224Shining PearlGrassLv.231%MidRoute
- Step 2Gastrodon ✓EFFORTLESSRoute 221Shining PearlGrassLv.28-3030%MidRouteEASYRoute 218Shining PearlGrassLv.28-3020%MidRouteEASYRoute 218Brilliant DiamondGrassLv.28-3020%MidRouteEASYFuego IronworksBrilliant DiamondGrassLv.29-3015%MidPower-plantEASYFuego IronworksShining PearlGrassLv.29-3015%MidPower-plantFountainspring CaveBrilliant DiamondGrassLv.16-20MidCaveFountainspring CaveShining PearlGrassLv.16-20MidCaveMODERATERoute 221Brilliant DiamondGrassLv.29-3010%MidRouteEFFORTLESSRoute 222Brilliant DiamondGrassLv.40-4240%LateRouteNightEFFORTLESSRoute 222Brilliant DiamondGrassLv.40-4230%LateRouteMorning/dayEASYRoute 222Shining PearlGrassLv.40-4220%LateRouteNightMODERATERoute 222Shining PearlGrassLv.41-4210%LateRouteMorning/dayEFFORTLESSRoute 224Brilliant DiamondGrassLv.52-5330%PostRouteNightEFFORTLESSRoute 224Shining PearlGrassLv.52-5330%PostRouteNightEASYRoute 224Brilliant DiamondGrassLv.5320%PostRouteMorning/dayEASYRoute 224Shining PearlGrassLv.5320%PostRouteMorning/dayCHALLENGINGRoute 230Brilliant DiamondGrassLv.515%PostRouteCHALLENGINGRoute 230Shining PearlGrassLv.515%PostRouteor evolve from Shellos (Step 1)
Gastrodon starts showing up in late-game routes at high spawn rates across 4 encounter spots. The list below is sorted so you can pick what fits your current progress without scrolling through everything.
Where To Catch Gastrodon in Sword & Shield
Shellos is your first catch on the way to Gastrodon. You'll find walking encounters from Lv. 20-44 across 30 total spots in the chain.
- Step 1Catch ShellosEFFORTLESSMotostoke RiverbankShieldGrassLv.26-2835%MidThunderstormEFFORTLESSMotostoke RiverbankSwordGrassLv.26-2835%MidThunderstormEFFORTLESSGiant's CapSwordGrassLv.26-2830%MidRainingEFFORTLESSGiant's CapShieldGrassLv.26-2830%MidRainingEFFORTLESSGiant's MirrorShieldGrassLv.26-2830%MidRainingEFFORTLESSGiant's MirrorSwordGrassLv.26-2830%MidRainingEFFORTLESSStony WildernessShieldGrassLv.26-2830%MidRainingEFFORTLESSStony WildernessSwordGrassLv.26-2830%MidRainingEASYGalar Mine No. 2ShieldOverworldLv.20-2425%MidCaveAll WeatherEASYGalar Mine No. 2SwordOverworldLv.20-2425%MidCaveAll WeatherEASYBridge FieldShieldGrassLv.26-2825%MidRainingEASYBridge FieldSwordGrassLv.26-2825%MidRainingEASYBridge FieldShieldGrassLv.26-2820%MidThunderstormEASYBridge FieldSwordGrassLv.26-2820%MidThunderstormEASYGiant's CapSwordGrassLv.26-2820%MidThunderstormEASYGiant's CapShieldGrassLv.26-2820%MidThunderstormMODERATEGalar Mine No. 2ShieldGrassLv.20-2410%MidCaveThunderstormMODERATEGalar Mine No. 2ShieldGrassLv.20-2410%MidCaveIntense SunMODERATEGalar Mine No. 2SwordGrassLv.20-2410%MidCaveAll WeatherMODERATEGalar Mine No. 2ShieldGrassLv.20-2410%MidCaveSnowingMODERATEGalar Mine No. 2ShieldGrassLv.20-2410%MidCaveSandstormMODERATEGalar Mine No. 2ShieldGrassLv.20-2410%MidCaveRainingMODERATEGalar Mine No. 2ShieldGrassLv.20-2410%MidCaveHeavy FogMODERATEGalar Mine No. 2ShieldGrassLv.20-2410%MidCaveOvercastMODERATEGalar Mine No. 2ShieldGrassLv.20-2410%MidCaveNormal WeatherMODERATEGalar Mine No. 2ShieldGrassLv.20-2410%MidCaveSnowstorm
- Step 2Gastrodon ✓EFFORTLESSRoute 9 - in Circhester BayShieldGrassLv.39-4330%LateRouteAll WeatherEFFORTLESSRoute 9 - in Circhester BaySwordGrassLv.39-4330%LateRouteAll WeatherEASYRoute 9ShieldOverworldLv.41-4415%LateRouteAll WeatherEASYRoute 9SwordOverworldLv.41-4415%LateRouteAll Weatheror evolve from Shellos (Step 1)
Don't let Gastrodon's 475 base stat total fool you. Storm Drain is what makes it tick — it punches way above its weight class. We rate it B-Tier as a trick room.
Watch for Roserade (Grass) when using Gastrodon. They all hit it super-effectively with STAB. Roserade is the most dangerous since Grass moves deal 4x damage. Only 1 weakness means fewer dedicated counters to worry about. At base 39 Speed, Gastrodon won't outrun any of these threats so switching to a resist is usually the safer play.
Shellos evolves into Gastrodon at level 30. Gastrodon is the fully evolved form. It sits at 475 BST in its evolved form.
Run Storm Drain on Gastrodon. It's the ability that defines how you build around it and the main reason it holds a competitive niche. Gastrodon also gets Sticky Hold and Sand Force, but they don't compare.
Gastrodon fills the trick room role. It's leaning toward the special side (base 92 Sp. Atk). Base 39 Speed is low. Priority moves or Trick Room are the way to go. And it's enough bulk to take a hit or two.
Gastrodon appears in 13 games, including Platinum, HeartGold & SoulSilver, and Diamond & Pearl.
Gastrodon first appeared in Diamond & Pearl and has been available in 13 games across 6 generations. Obtainable through wild encounters in most titles where it appears.
- Gen IY
Yellow - Gen IRB
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 IVDPDebut
Diamond & Pearl - Gen VBW
Black & White - Gen VB2W2
Black 2 & White 2 - Gen VIXY
X & Y - Gen VIORAS
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