Stats & Training
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.
When it’s attacked, it gushes a purple liquid that’s not poisonous but makes Gastrodon’s meat bitter and inedible.
A relative of Shellder and Cloyster, this ocean dweller sometimes comes onto land in search of food.
Gastrodon Weakness
Gastrodon's Water/Ground typing leaves it vulnerable to Grass. 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.
| Damage | Types |
|---|---|
| 4x (Critical) | Grass |
| 0.5x (Resist) | Fire, Poison, Rock, Steel |
| 0x (Immune) | Electric |
 Tropius Grass | C | |
Obtain MethodPoke Pelago Gift Available Moves Moves
Damage vs Gastrodon View Tropius builds →Leaf Storm 4x145-171%KO Solar Beam 4x134-158%KO Energy Ball 4x101-119%KO Leaf Tornado 4x74-87% | ||
 Sceptile Grass | C | |
Available Moves Moves
Damage vs Gastrodon View Sceptile builds →Leaf Storm 4x197-232%KO Solar Beam 4x181-213%KO Leaf Blade 4x134-158%KO Energy Ball 4x137-161%KO | ||
 Venusaur GrassPoison | C | |
Available Moves Moves
Damage vs Gastrodon View Venusaur builds →Petal Dance 4x175-206%KO Solar Beam 4x175-206%KO Petal Blizzard 4x128-152%KO Energy Ball 4x131-155%KO | ||
 Torterra GrassGround | C | |
Available Moves Moves
Damage vs Gastrodon View Torterra builds →Leaf Storm 4x151-177%KO Wood Hammer 4x216-255%KO Solar Beam 4x140-165%KO Energy Ball 4x104-123%KO | ||
 Dartrix Grass | D | |
Obtain MethodEvolve Rowlet (Route 1 Gift) Available Moves Moves
Damage vs Gastrodon View Dartrix builds →Solar Beam 4x131-155%KO Leaf Blade 4x120-142%KO Energy Ball 4x98-116%KO Razor Leaf 4x76-90% | ||
In Ultra Sun & Ultra Moon, Greninja deals 63-75% with Hydro Pump.
 | S | |
Recommended Build AbilitySoulheart ItemAssault Vest NatureCalm Moves
Damage vs Gastrodon View Magearna builds →Ice Beam23-27% | ||
 | A | |
Recommended Build AbilityFlashfire ItemLeftovers NatureCalm Moves View Heatran builds →
| ||
 | A | |
Recommended Build AbilityBattlebond ItemChoice Specs NatureTimid Moves
Damage vs Gastrodon View Greninja builds →Dark Pulse46-54% Ice Beam35-41% Hydro Pump63-75% | ||
 | B | |
Recommended Build AbilityMagnetpull ItemChoice Specs NatureTimid Moves
Damage vs Gastrodon View Magnezone builds →Flash Cannon27-32% | ||
 | B | |
Recommended Build AbilityDrizzle ItemDamprock NatureModest Moves
Damage vs Gastrodon View Pelipper builds →Hurricane44-52% Scald32-38% | ||
Ultra Sun & Ultra Moon Evolution
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. View every chain in the Evolution Chart.
How to Evolve
Breeding
Breed with Gastrodon to get Shellos eggs easily using 52 partners from the Indeterminate and Water1 egg groups. Notable egg moves include Acid Armor, Amnesia, Brine and 13 more.
Ultra Sun & Ultra Moon Gastrodon Best Moveset
Modest nature gives Gastrodon the special lean it needs to trade hits effectively. Leftovers adds passive recovery each turn, max HP and Sp. Atk EVs split the difference, and the remaining moves punishes anything trying to wall it.
Best Build
Gastrodon best EVs are HP and Sp. Atk
Doubles Special Tank Moveset
- Earth Power
- Ice Beam
- Scald
- Protect
Recommended Teammates
Wall Moveset
- Recover
- Scald
- Toxic
- Earthquake
Recommended Teammates
Moves
The natural movepool does the job, but Acid Armor and Amnesia from the egg pool give Gastrodon something extra. Pair those with Earthquake and Muddy Water for STAB and coverage across 7 types for reach, and the kit fills out nicely.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Transfer Moves
How to Get Gastrodon in Ultra Sun & Ultra Moon
decent spawn rates for Gastrodon across 10 locations in late-game routes. Nothing complicated. Check the sorted list below, compare the top few options, and head to whichever is closest.
Where To Catch Gastrodon in Ultra Sun & Ultra Moon
The path to Gastrodon starts with Shellos at Lv. 41-45 via walking, surfing, and more encounters. 2 catchable stages total, with locations listed for each one below.
Step 1Catch ShellosSeafolk VillageUltra SunIn-game trade Lv.44 CityLateTrade for (give Granbull)Seafolk VillageUltra MoonIn-game trade Lv.44 CityLateTrade for (give Granbull)
Step 2Gastrodon ✓Ancient Poni PathUltra MoonSurfing on water Lv.41-44 Route20%LateAncient Poni PathUltra SunSurfing on water Lv.41-44 Route20%LatePoni Breaker CoastUltra SunSurfing on water Lv.41-44 Water20%LatePoni Breaker CoastUltra MoonSurfing on water Lv.41-44 Water20%LateAncient Poni PathUltra MoonGrass Lv.41-44 Route10%LateAncient Poni PathUltra SunGrass Lv.41-44 Route10%LatePoni WildsUltra SunGrass Lv.41-4410%LatePoni WildsUltra MoonGrass Lv.41-4410%LateExeggutor IslandUltra SunGrass Lv.42-45 Water10%LateExeggutor IslandUltra MoonGrass Lv.42-45 Water10%Lateor evolve from Shellos (Step 1)
Gastrodon Guide
In Ultra Sun & Ultra Moon, 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. Earthpower with Leftovers is the standard set.
In Ultra Sun & Ultra Moon, 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.
In Ultra Sun & Ultra Moon, 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.
In Ultra Sun & Ultra Moon, Gastrodon fills the trick room role. It's a mixed attacker with base 83 Attack and 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.
For Ultra Sun & Ultra Moon, Gastrodon has answers, but so do you. Super-effective STAB from faster Pokemon is the simplest answer. Grass-type attackers hit hardest.
Game Availability
Gastrodon first appeared in Diamond & Pearl and has been available in 13 games across 7 generations. Obtainable through wild encounters in most titles where it appears.
Click a game to view version-specific details
- Gen 1Y
Yellow - Gen 1RB
Red & Blue - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3FRLG
FireRed & LeafGreen - Gen 3E
Emerald - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 4DPDebut
Diamond & Pearl - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7SM
Sun & Moon - Gen 7LGPE
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8PLA
Legends: Arceus - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves