Is Gastrodon Good in Omega Ruby & Alpha Sapphire Playthrough?
Water/Ground from Shellos with AbilityStorm Drain upgrading Water immunity to a Special Attack boost. One weakness (Grass, 4x). Handles Wattson and Flannery. Competes with Swampert for the Water/Ground slot, but Storm Drain gives Gastrodon unique utility.
Shellos resists most of Roxanne's coverage and hits back hard.
Shellos has the type edge here and should clean up Brawly's team.
Shellos has the type edge here and should clean up Wattson's team.
Shellos resists most of Flannery's coverage and hits back hard.
Shellos trades roughly evenly with Norman's team.
Gastrodon trades roughly evenly with Winona's team.
Gastrodon trades roughly evenly with Tate & Liza's team.
Gastrodon trades roughly evenly with Wallace's team.
Gastrodon trades roughly evenly with Sidney's team.
Gastrodon trades roughly evenly with Phoebe's team.
Gastrodon has the type edge here and should clean up Glacia's team.
Drake's typing presses Gastrodon's defenses.
Gastrodon has the type edge here and should clean up Steven's team.
Catch Shellos on Route 103 (walking, Lv 3, rare). DexNav.
Your Shellos should hit Level 30 before you reach Winona, at typical leveling pace.
How to Get Gastrodon in Omega Ruby & Alpha Sapphire
No wild encounters for Gastrodon. The 2-stage line runs through Shellos, which you can catch at moderate rates from the locations below. Evolve at level 30 once you've got the levels.
How to Obtain Gastrodon in ORAS
To get Gastrodon, start by catching Shellos through walking encounters at Lv. 3-13. The chain covers 1 catchable stage before reaching the final form.
Step 1Catch ShellosRoute 103Lv.3GrassRate 5%DexNav chainRoute 110Lv.13GrassRate 5%DexNav chain
Step 2Gastrodon ✓
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 |
What is Gastrodon Weak Against
GoodBest Pokemon Against Gastrodon
 Torterra GrassGround | C | |
Obtain MethodEvolve Turtwig (Route 101 Gift) Available Move Moves
Damage vs Gastrodon View Torterra builds →Wood Hammer 4x218-257%KO | ||
 Meganium Grass | C | |
Obtain MethodEvolve Chikorita (Route 101 Gift) Available Move Moves
Damage vs Gastrodon View Meganium builds →Petal Dance 4x153-181%KO | ||
 Bellossom Grass | C | |
 Tropius Grass | C | |
 Cacturne GrassDark | C | |
In Omega Ruby & Alpha Sapphire, Excadrill's Earthquake hits Gastrodon for 36-43%.
S | ||
Recommended Build AbilityMold Breaker ItemLeftovers NatureJolly Moves
Damage vs Gastrodon View Excadrill builds →Earthquake36-43% Rapid Spin18-22% | ||
A | ||
Recommended Build AbilityStatic ItemLeftovers NatureBold Moves
Damage vs Gastrodon View Zapdos builds →Heat Wave8-9% | ||
A | ||
Recommended Build AbilityFlashfire ItemLeftovers NatureCalm Moves View Heatran builds →
| ||
B | ||
Recommended Build AbilityMagnetpull ItemChoice Scarf NatureTimid Moves
Damage vs Gastrodon View Magnezone builds →Flash Cannon8-10% | ||
B | ||
Recommended Build AbilityPrankster ItemLeftovers NatureTimid Moves
Damage vs Gastrodon View Thundurus builds →Focus Blast25-29% | ||
Gastrodon Evolutions
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 49 partners from the Indeterminate and Water1 egg groups. Notable egg moves include Acid Armor, Amnesia, Brine and 13 more.
ORAS Gastrodon Best Moveset
Water/Ground at 111 HP with AbilityStorm Drain absorbing Water moves for Sp. Atk boost. Only one weakness at 4x Grass. The moveset earns C-tier through Storm Drain utility that absorbs Water attacks for the team while providing bulk with one of the safest defensive typings available.
Best Build
Gastrodon best EVs are HP and Sp. Def
Wall Moveset
- Scald
- Recover
- Earthquake
- Toxic
Recommended Teammates
Moves List
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.
How to Read the Moves Table
Tabs
- Level-Up
- Learned by leveling up.
- TM
- Taught by a Technical Machine.
- Egg
- Inherited via breeding.
- Tutor
- NPC tutor (cost: items, BP, money).
- Reminder
- An NPC reteaches any move this Pokemon could have learned by leveling up.
- Transfer
- Carried over from an older game using Pokemon HOME.
- Event
- Given out through Mystery Gift events.
Visual Signals
CAT (Category)
How the move deals damage and which stats it uses.
A small dot on the icon's corner marks the move as contact. That triggers abilities like Static, Flame Body, Rough Skin, or Iron Barbs, plus items like Rocky Helmet and Sticky Barb.
Tier (S to D)
Each move's competitive rank in RankedBoost's system. TM, Egg, and Tutor sort by tier by default (best first). On Level-Up, click the Tier header to do the same.
PWR (Power)
Base damage. Numbers shown in a type color include STAB (base × 1.5). Hover any colored number to see the math.
— means no power (status moves) or variable power.
Sorting & Filter
Click any column header to sort. Level-Up opens with Lv 1 at the top. TM, Egg, and Tutor open with the highest-tier moves at the top.
Search filters by move name or type. The Filter button limits the list to STAB, Physical, Special, or Status moves.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Transfer Moves
Base Stats
When its natural enemy attacks, it oozes purple fluid and escapes.
It apparently had a huge shell for protection in ancient times. It lives in shallow tidal pools.
Gastrodon Omega Ruby & Alpha Sapphire Guide
In Omega Ruby & Alpha Sapphire, 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 C-Tier as a trick room. Scald with Leftovers is the standard set.
In Omega Ruby & Alpha Sapphire, 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 Omega Ruby & Alpha Sapphire, 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 Omega Ruby & Alpha Sapphire, 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.
In Omega Ruby & Alpha Sapphire, run Scald, Recover, Earthquake, and Toxic on Gastrodon. Scald is the most common pick at 0% usage. Scald provides reliable STAB damage.
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 1RB
Red & Blue - Gen 1Y
Yellow - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3E
Emerald - Gen 3FRLG
FireRed & LeafGreen - Gen 4DPDebut
Diamond & Pearl - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7SM
Sun & Moon - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7LGPE
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 8PLA
Legends: Arceus - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves