Species guide · Ages 10+ · July 2026
Gastrodon
Say it: GA-str-odo-n
Kids summary (simpler)Tap to expand
Gastrodon is the Sea Slug Pokémon — Water and Ground from Shellos (East/West seas are cosmetic). In Pokémon GO it is a bulky Water/Ground attacker and Great League staple. Water/Ground hits Fire, Rock, and Electric well in spots; Grass hits it for 4×. Evolve Shellos or catch Gastrodon from events.
Say it: GA-str-odo-n
Gastrodon (#423) is a Water / Ground Pokémon in Pokémon GO — the final form of Shellos. Trainers use it for Great League PvP and bulky Water/Ground damage with Mud-Slap / Hidden Power + Earth Power / Earthquake / Water Pulse / Body Slam. Against Gastrodon, lead with Grass. Stats, type chart, moves, and counter picks below use our Game Master snapshot.
Type-colored placeholder — not official Pokémon artwork (see IP notice below).
Pokédex notes
Gastrodon is a Water / Ground-type Pokémon in Pokémon GO. National Dex #0423. Water/Ground pairs resist Electric — strong in open Ultra League metas.
Where in GO: Wild spawns, eggs, Field Research, and seasonal events
Invest tip: Invest for PvP bulk first. Mud-Slap + Earth Power / Body Slam is a common kit. Shadow Gastrodon hits harder but loses bulk. No Community Day exclusive is required.
Type matchups
- Water moves hit Fire, Ground, and Rock hard.
- Ground moves hit Fire, Electric, Poison, Rock, and Steel hard.
When Gastrodon is your opponent, Grass hits hard.
Full type matchup guide →GO base stats
From Game Master snapshot — IVs, buddy, and power-ups change real battle stats.
- Attack
- 169
- Defense
- 143
- Stamina
- 244
Weak to
Resists
Best Pokémon to use against it
When this species is your opponent (Rocket battle, gym, raid, or PvP), these picks exploit its typings. Each list is a pool of options — not a required 12-Pokémon lobby.
Recommended
Strongest practical attackers for this matchup.
- 1. Kartana · beats Grass
Razor Leaf + Leaf Blade
- 2. Mega Venusaur · beats Grass
Vine Whip + Frenzy Plant · Elite TM
- 3. Shadow Tangrowth · beats Grass
Vine Whip + Power Whip
- 4. Zarude · beats Grass
Vine Whip + Power Whip
- 5. Roserade · beats Grass
Razor Leaf + Grass Knot
- 6. Tangrowth · beats Grass
Vine Whip + Power Whip
- 7. Sceptile · beats Grass
Bullet Seed + Frenzy Plant · Elite TM
- 8. Venusaur · beats Grass
Vine Whip + Frenzy Plant · Elite TM
- 9. Torterra · beats Grass
Razor Leaf + Frenzy Plant · Elite TM
- 10. Exeggutor · beats Grass
Bullet Seed + Solar Beam
- 11. Breloom · beats Grass
Bullet Seed + Grass Knot
- 12. Tsareena · beats Grass
Magical Leaf + Grass Knot
Budget
Solid alternatives when you cannot build the Recommended picks.
- 1. Roserade · beats Grass
Razor Leaf + Grass Knot
- 2. Exeggutor · beats Grass
Bullet Seed + Solar Beam
- 3. Venusaur · beats Grass
Vine Whip + Frenzy Plant · Elite TM
- 4. Sceptile · beats Grass
Bullet Seed + Frenzy Plant · Elite TM
- 5. Vileplume · beats Grass
Razor Leaf + Solar Beam
- 6. Victreebel · beats Grass
Razor Leaf + Leaf Blade
- 7. Shiftry · beats Grass
Razor Leaf + Leaf Blade
- 8. Cacturne · beats Grass
Sucker Punch + Grass Knot
- 9. Leafeon · beats Grass
Razor Leaf + Leaf Blade
- 10. Simisage · beats Grass
Vine Whip + Grass Knot
- 11. Lilligant · beats Grass
Hidden Power + Petal Blizzard
- 12. Serperior · beats Grass
Vine Whip + Frenzy Plant · Elite TM
Recommended moves
Game Master “moves in GO” lists Gastrodon’s always-available TM pool. Build Mud-Slap + Earth Power for Great League first.
Fast
- Mud-Slap · Standard
Ground energy / default
- Hidden Power · Standard
Variable typing
Charged
- Earth Power · Standard
Ground nuke
- Earthquake · Standard
Ground alternate
- Water Pulse · Standard
Water coverage
- Body Slam · Standard
Normal / bait
Moves in GO
Always-available Game Master learnset (regular TMs). Community Day / Elite TM moves appear above when we have curated notes for this species.
Fast
- mud slap
- hidden power
Charged
- water pulse
- earth power
- body slam
- earthquake
PvP league ranks (family snapshot)
- Great League · rank #423 of 954 · CP 1494
Mud Slap + Earthquake
- Ultra League · rank #290 of 747 · CP 2489
Mud Slap + Earthquake
- Master League · rank #497 of 1023 · CP 2628
Mud Slap + Earthquake
In your Collect
Name match only (text). Cards you have saved in Card Nexus Collect — not official art.
Sign in to see holdings, or open Collect.
Open Collect →Raid and PvP advice uses our Game Master snapshot (updated July 2026).
Raid attacker roles
In the Competitive Guide
- Ch. 20: Lucky Pokémon & Family Trades
When lucky status matters for trades and Stardust savings.
- Ch. 21: Best Friends & Lucky Friends
Friendship steps for raid bonuses and lucky trades.