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.
A team of researchers is scouring the oceans of the world in search of a Gastrodon in a color never seen before.
Experiments are being conducted to discover what happens when a Gastrodon is raised in a location other than the sea where it was born.
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 |
 Exeggutor GrassPsychic | C | |
Available Moves Moves
Damage vs Gastrodon View Exeggutor builds →Leaf Storm 4x227-268%KO Wood Hammer 4x195-229%KO Solar Beam 4x211-248%KO Energy Ball 4x159-187%KO | ||
 Meganium Grass | C | |
Available Moves Moves
Damage vs Gastrodon View Meganium builds →Petal Dance 4x151-177%KO Solar Beam 4x151-177%KO Petal Blizzard 4x128-152%KO Energy Ball 4x112-132%KO | ||
 Leafeon Grass | C | |
Obtain MethodEvolve Eevee (Paniola Ranch Gift) Available Moves Moves
Damage vs Gastrodon View Leafeon builds →Solar Beam 4x118-139%KO Leaf Blade 4x165-194%KO Energy Ball 4x90-106%KO Giga Drain 4x74-87% | ||
 Roserade GrassPoison | C | |
Available Moves Moves
Damage vs Gastrodon View Roserade builds →Solar Beam 4x211-248%KO Energy Ball 4x159-187%KO Magical Leaf 4x106-126%KO Mega Drain 4x74-87% | ||
 Dartrix Grass | D | |
Obtain MethodEvolve Rowlet (Iki Town 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 Sun & 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% | ||
Sun & 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.
Sun & 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 Sun & Moon
decent spawn rates across 8 locations for Gastrodon in late-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 Sun & Moon
The path to Gastrodon starts with Shellos at Lv. 40-43 via walking and surfing encounters. 1 catchable stage total, with locations listed for each one below.
Step 1Obtain Shellos
Step 2Gastrodon ✓Poni WildsSunSurfing on water Lv.40-4320%LatePoni WildsMoonSurfing on water Lv.40-4320%LateAncient Poni PathMoonGrass Lv.40-43 Route10%LateAncient Poni PathSunGrass Lv.40-43 Route10%LateExeggutor IslandMoonGrass Lv.40-43 Water10%LateExeggutor IslandSunGrass Lv.40-43 Water10%LatePoni WildsSunGrass Lv.40-4310%LatePoni WildsMoonGrass Lv.40-4310%Lateor evolve from Shellos (Step 1)
Gastrodon Guide
In Sun & 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 Sun & 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 Sun & 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 Sun & 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 Sun & 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