poke.study

No. 0423

Gastrodon

Sea Slug Pokémon

Gastrodon
Official art
WaterGround
Height
0.9 m 2′11″
Weight
29.9 kg 65.9 lbs
Base stat total
475 top 43%
Introduced
Gen IV
Abilities
Pokédex entryLegends: Arceus
Eats beach sand for nourishment. Should one Gastrodon encounter another of a different color, a fierce battle will inevitably ensue.
See all 11 entries

Base stats

HP111171–218332–426
Atk8379–148153–291
Def6865–132126–258
SpA9287–158170–311
SpD8278–147152–289
Spe3939–10074–194
Total475Higher than 57% of all Pokémon
HP111Atk83Def68Spe39SpD82SpA92

Ranges: 0 IV/EV with a hindering nature to 31 IV/252 EV with a helpful nature. EV yield: 2 HP.

Stat calculatorChampions Stat Points & Stat Alignment, or EVs, IVs & nature

Speed tiers

Speed at Lv 50 in Pokémon Champions (base 39). Scarf and Tailwind use the Max+ value.

Max+100Max91No SP59Min53Scarf150Tailwind200

At max Speed, Gastrodon outspeeds 9 of the 30 most used Pokémon in Champions VGC.

  1. 203Mega Garchomp ZModest · 32 SP · #21 in usage
  2. 200Mega GengarTimid · 32 SP · #26 in usage
  3. 190Mega Raichu YTimid · 23 SP · #13 in usage
  4. 189Mega SalamenceTimid · 32 SP · #4 in usage
  5. 184WhimsicottTimid · 32 SP · #23 in usage
  6. 178Mega MetagrossJolly · 32 SP · #28 in usage
  7. 178Mega StaraptorJolly · 32 SP · #29 in usage
  8. 172SneaslerAdamant · 32 SP · #2 in usage
  9. 169Mega FloetteTimid · 32 SP · #17 in usage
  10. 169GarchompJolly · 32 SP · #19 in usage
  11. 167Mega Charizard YTimid · 32 SP · #14 in usage
  12. 167Mega GardevoirTimid · 32 SP · #20 in usage
  13. 161IndeedeeTimid · 32 SP · #30 in usage
  14. 156Hisuian ArcanineJolly · 32 SP · #16 in usage
  15. 150ArchaludonTimid · 32 SP · #9 in usage
  16. 149GholdengoTimid · 32 SP · #8 in usage
  17. 143BasculegionJolly · 32 SP · #6 in usage
  18. 128PelipperTimid · 32 SP · #12 in usage
  19. 120VolcaronaBold · 0 SP · #25 in usage
  20. 105RillaboomAdamant · 0 SP · #1 in usage
  21. 101MiloticCalm · 0 SP · #15 in usage
  22. 100Gastrodon · Max+32 SP, Speed-raising alignment
  23. 95SylveonModest · 15 SP · #18 in usage
  24. 94Female IndeedeeRelaxed · 0 SP · #7 in usage
  25. 91Gastrodon · Max32 SP, neutral alignment
  26. 90PolitoedCalm · 0 SP · #22 in usage
  27. 90SinistchaBold · 0 SP · #24 in usage
  28. 85ArmarougeQuiet · 0 SP · #27 in usage
  29. 80IncineroarCareful · 0 SP · #3 in usage
  30. 80FarigirafBold · 0 SP · #11 in usage
  31. 70KingambitAdamant · 0 SP · #5 in usage
  32. 60Mega GolisopodAdamant · 0 SP · #10 in usage
  33. 59Gastrodon · No SP0 SP, neutral alignment

Others at their most common Speed investment in Champions VGC (Reg M-C · Doubles, Sep 2026); Pokémon holding a Mega Stone are shown as their Mega.

Type matchups

Weak to

Grass4×

Resists

Fire½×Poison½×Rock½×Steel½×

Immune to

Electric0×
Takes normal damage from 12 types
NormalFightingFlyingGroundBugGhostWaterPsychicIceDragonDarkFairy

With Storm Drain: Water becomes 0×

Abilities

  • Sticky Hold

    Prevents a held item from being removed by other Pokémon.

  • Storm Drain

    Redirects single-target Water moves to this Pokémon where possible. Absorbs Water moves, raising Special Attack one stage.

  • Sand ForceHidden ability

    Strengthens Rock, Ground, and Steel moves to 1.3× their power during a sandstorm. Protects against sandstorm damage.

Competitive

SV SinglesRUSV Doubles(DUU)National DexRU

7.47% of teams · rank #27 · Singles · 1630+ rating · 20,763 battles · Sep 2026

Most common build

Item
Rocky Helmet
Ability
Storm Drain
Nature
Bold
EVs
252 HP / 252 Def / 4 SpD
Tera Type
Ghost
  1. Recover
  2. Ice Beam
  3. Earth Power
  4. Spikes

Each part is the most used on its own, so not every team runs this exact set.

Usage by rating

  • All players7.37%
  • Rated 1500+7.56%
  • Rated 1630+7.47%
  • Rated 1760+9.21%

Usage by month

Oct 20257.47%

Moves

  • Recover99.7%
  • Ice Beam81.9%
  • Earth Power69.6%
  • Spikes69.4%
  • Earthquake27.7%
  • Stealth Rock26.8%
  • Surf11.6%
  • Sludge Bomb5.5%
  • Clear Smog2.8%
  • Chilling Water1.7%

Items

  • Rocky Helmet82.7%
  • Heavy-Duty Boots10.3%
  • Leftovers6.3%
  • No item0.4%
  • Damp Rock0.1%
  • Choice Specs0.1%

Abilities

  • 56.7%
  • 43.3%
  • 0%

EV spreads

  • Bold 252 HP / 252 Def / 4 SpD34.8%
  • Relaxed 252 HP / 252 Def / 4 SpD27.9%
  • Bold 252 HP / 252 Def / 4 SpA8.6%
  • Calm 252 HP / 4 SpA / 252 SpD6.8%
  • Bold 252 HP / 252 Def / 4 Spe3.6%

Tera types

  • Ghost50.7%
  • Poison18.3%
  • Fairy14.3%
  • Dragon8.2%

Common teammates

Checks & counters

Evolution

  1. #0422ShellosWater
    1. Level 30#0423GastrodonWaterGround

Moves

Level up 11

1HardenRaises the user’s Defense by one stage.NormalStatus——30
1Mud-SlapHas a 100% chance to lower the target’s accuracy by one stage.GroundSpec20100%10
1RecoverHeals the user by half its max HP.NormalStatus——5
1Water GunInflicts regular damage with no additional effect.WaterSpec40100%25
15Water PulseHas a 20% chance to confuse the target.WaterSpec60100%20
20Ancient PowerHas a 10% chance to raise all of the user’s stats by one stage.RockSpec60100%5
25Body SlamHas a 30% chance to paralyze the target.NormalPhys85100%15
33Muddy WaterHas a 30% chance to lower the target’s accuracy by one stage.WaterSpec9085%10
39Earth PowerHas a 10% chance to lower the target’s Special Defense by one stage.GroundSpec90100%10
46Rain DanceChanges the weather to rain for five turns.WaterStatus——5
53MementoLowers the target’s Attack and Special Attack by two stages. User faints.DarkStatus—100%10

TM / HM / TR 47

TM01Take DownUser receives 1/4 the damage it inflicts in recoil.NormalPhys9085%20
TM05Mud-SlapHas a 100% chance to lower the target’s accuracy by one stage.GroundSpec20100%10
TM07ProtectPrevents any moves from hitting the user this turn.NormalStatus——10
TM11Water PulseHas a 20% chance to confuse the target.WaterSpec60100%20
TM22Chilling WaterThe user attacks the target by showering it with water that's so cold it saps the target's power. This also lowers the target's Attack stat.WaterSpec50100%20
TM25FacadePower doubles if user is burned, paralyzed, or poisoned.NormalPhys70100%20
TM28BulldozeHas a 100% chance to lower the target’s Speed by one stage.GroundPhys60100%20
TM34Icy WindHas a 100% chance to lower the target’s Speed by one stage.IceSpec5595%15
TM35Mud ShotHas a 100% chance to lower the target’s Speed by one stage.GroundSpec5595%15
TM36Rock TombHas a 100% chance to lower the target’s Speed by one stage.RockPhys6095%15
TM47EndurePrevents the user’s HP from lowering below 1 this turn.NormalStatus——10
TM50Rain DanceChanges the weather to rain for five turns.WaterStatus——5
TM51SandstormChanges the weather to a sandstorm for five turns.RockStatus——10
TM52SnowscapeThe user summons a snowstorm lasting five turns. This boosts the Defense stats of Ice types.IceStatus——10
TM55DigUser digs underground, dodging all attacks, and hits next turn.GroundPhys80100%10
TM66Body SlamHas a 30% chance to paralyze the target.NormalPhys85100%15
TM70Sleep TalkRandomly uses one of the user’s other three moves. Only works if the user is sleeping.NormalStatus——10
TM76Rock BlastHits 2-5 times in one turn.RockPhys2590%10
TM77WaterfallHas a 20% chance to make the target flinch.WaterPhys80100%15
TM84Stomping TantrumHas double power if the user’s last move failed.GroundPhys75100%10
TM85RestUser sleeps for two turns, completely healing itself.PsychicStatus——5
TM86Rock SlideHas a 30% chance to make the target flinch.RockPhys7590%10
TM90SpikesScatters Spikes, hurting opposing Pokémon that switch in.GroundStatus——20
TM103SubstituteTransfers 1/4 of the user’s max HP into a doll, protecting the user from further damage or status changes until it breaks.NormalStatus——10
TM110LiquidationHas a 20% chance to lower the target’s Defense by one stage.WaterPhys85100%10
TM116Stealth RockCauses damage when opposing Pokémon switch in.RockStatus——20
TM123SurfInflicts regular damage and can hit Dive users.WaterSpec90100%15
TM128AmnesiaRaises the user’s Special Defense by two stages.PsychicStatus——20
TM130Helping HandAlly’s next move inflicts half more damage.NormalStatus——20
TM133Earth PowerHas a 10% chance to lower the target’s Special Defense by one stage.GroundSpec90100%10
TM135Ice BeamHas a 10% chance to freeze the target.IceSpec90100%10
TM142Hydro PumpInflicts regular damage with no additional effect.WaterSpec11080%5
TM143BlizzardHas a 10% chance to freeze the target.IceSpec11070%5
TM148Sludge BombHas a 30% chance to poison the target.PoisonSpec90100%10
TM149EarthquakeInflicts regular damage and can hit Dig users.GroundPhys100100%10
TM150Stone EdgeHas an increased chance for a critical hit.RockPhys10080%5
TM152Giga ImpactUser foregoes its next turn to recharge.NormalPhys15090%5
TM163Hyper BeamUser foregoes its next turn to recharge.NormalSpec15090%5
TM171Tera BlastIf the user has Terastallized, it unleashes energy of its Tera Type. This move inflicts damage using the Attack or Sp. Atk stat—whichever is higher for the user.NormalSpec80100%10
TM176Sand TombPrevents the target from fleeing and inflicts damage for 2-5 turns.GroundPhys3585%15
TM193Weather BallIf there be weather, this move has doubled power and the weather’s type.NormalSpec50100%10
TM202Pain SplitSets the user’s and targets’s HP to the average of their current HP.NormalStatus——20
TM208WhirlpoolPrevents the target from leaving battle and inflicts 1/16 its max HP in damage for 2-5 turns.WaterSpec3585%15
TM209Muddy WaterHas a 30% chance to lower the target’s accuracy by one stage.WaterSpec9085%10
TM214Sludge WaveHas a 10% chance to poison the target.PoisonSpec95100%10
TM219Skitter SmackLowers the target’s Special Attack by one stage.BugPhys7090%10
TM224CurseGhosts pay half their max HP to hurt the target every turn. Others decrease Speed but raise Attack and Defense.GhostStatus——10

Pokédex entries

Category
Sea Slug Pokémon
Debut
Sinnoh · Diamond & Pearl
Color
Purple
Shape
Habitat
—
Pal Park area
Sea

About its forms: Forms only affect appearance. A form is determined before a wild encounter based on whether the battle is in western or eastern Sinnoh and cannot be changed.

Original Sinnoh#061Extended Sinnoh#061Original Alola#261Original Poni#076Updated Alola#342Updated Poni#089Galar#231Hisui#083Paldea#328

  1. Eats beach sand for nourishment. Should one Gastrodon encounter another of a different color, a fierce battle will inevitably ensue.

    Legends: Arceus

  2. The softness of its body helps disperse the force of impacts, so although its body is uncommonly squishy, it’s also surprisingly resilient.

    Shield

  3. Its search for food sometimes leads it onto land, where it leaves behind a sticky trail of slime as it passes through.

    Sword

  4. Their shape and color change, depending on their environment and diet. There are many of them at beaches where the waves are calm.

    Ultra Moon

  5. Long ago, it had a shell on its back. There’s now a vestigial plate on its back that’s hard but thin.

    Ultra Sun

  6. Plankton, invisible to the naked eye, is its main food source. It comes onto the land periodically, but the reason for this is not known.

    Moon

  7. It has strong regenerative capabilities. Even if parts of it are bitten off by fish Pokémon, it will return to normal within a few hours.

    Sun

  8. When its natural enemy attacks, it oozes purple fluid and escapes.

    HeartGold · SoulSilver · X · Omega Ruby

  9. Long ago, its entire back was shielded with a sturdy shell. There are traces of it left in its cells.

    Platinum · Black · White · Black 2 · White 2

  10. It apparently had a huge shell for protection in ancient times. It lives in shallow tidal pools.

    Pearl · Y · Alpha Sapphire

  11. It has a pliable body without any bones. If any part of its body is torn off, it grows right back.

    Diamond

Names around the world

Japanese
トリトドン
Japanese (romaji)
Tritodon
Korean
트리토돈
Chinese (Traditional)
海兔獸
Chinese (Simplified)
海兔兽
French
Tritosor
German
Gastrodon
Spanish
Gastrodon
Italian
Gastrodon

Sprites

Tap any sprite to show it on the Pokédex above. ▶ marks official animations; Gen VIII–IX models are large, so they load only when you tap them.

Official artwork

3D models

Generation IV

Generation V

Generation VI

Generation VII

Generation VIII · animated models

Generation IX · animated models

Training

EV yield
2 HP
Catch rate
75 ≈9.8% with a Poké Ball at full HP
Base friendship
70
Base experience
166
Growth rate
Medium

Breeding

Egg groups
Water 1Amorphous
Gender
♂ 50%♀ 50%
Hatch time
20 egg cycles ≈5,355 steps (Gen IV–VII)

Where to find

Shield: The Crown Tundra 1 area
  • Max LairCapture during a Dynamax Adventure. · Lv 65
Sword: The Crown Tundra 1 area
  • Max LairCapture during a Dynamax Adventure. · Lv 65
Shield 16 areas
  • Bridge Field (Max Den A)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
  • Bridge Field (Max Den G)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 55–60
  • Dusty BowlSpecial overworld spawn in a fixed location in the water. · Lv 56–60
  • Dusty Bowl (Max Den C)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
  • Dusty Bowl (Max Den H)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
  • Dusty Bowl (Max Den I)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
  • Galar Mine No. 2Static encounter · Lv 50
  • Giant's Cap (Max Den D)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 55–60
  • Giant's Mirror (Main Area)Special overworld spawn in a fixed location in the water. · Lv 56–60
  • Giant's Mirror (Max Den B)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
  • Lake of Outrage (Max Den A)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 55–60
  • Rolling Fields (Max Den B)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
  • Route 9 (Circhester Bay)Walking in tall grass or a cave · Lv 39–43
  • Route 9 (Main)Walking in the overworld · Lv 41–44
  • South Lake Miloch (Max Den C)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 55–60
  • West Lake Axewell (Max Den E)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
Sword 16 areas
  • Bridge Field (Max Den A)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
  • Bridge Field (Max Den G)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 55–60
  • Dusty BowlSpecial overworld spawn in a fixed location in the water. · Lv 56–60
  • Dusty Bowl (Max Den C)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
  • Dusty Bowl (Max Den H)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
  • Dusty Bowl (Max Den I)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
  • Galar Mine No. 2Static encounter · Lv 50
  • Giant's Cap (Max Den D)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 55–60
  • Giant's Mirror (Main Area)Special overworld spawn in a fixed location in the water. · Lv 56–60
  • Giant's Mirror (Max Den B)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
  • Lake of Outrage (Max Den A)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 55–60
  • Rolling Fields (Max Den B)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
  • Route 9 (Circhester Bay)Walking in tall grass or a cave · Lv 39–43
  • Route 9 (Main)Walking in the overworld · Lv 41–44
  • South Lake Miloch (Max Den C)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 55–60
  • West Lake Axewell (Max Den E)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 45–60
Ultra Moon 4 areas
  • Ancient Poni PathSurfing, Walking in tall grass or a cave · Lv 41–44
  • Exeggutor IslandWalking in tall grass or a cave · Lv 42–45
  • Poni Breaker CoastSurfing · Lv 41–44
  • Poni WildsWalking in tall grass or a cave · Lv 41–44
Ultra Sun 4 areas
  • Ancient Poni PathSurfing, Walking in tall grass or a cave · Lv 41–44
  • Exeggutor IslandWalking in tall grass or a cave · Lv 42–45
  • Poni Breaker CoastSurfing · Lv 41–44
  • Poni WildsWalking in tall grass or a cave · Lv 41–44
Moon 3 areas
  • Ancient Poni PathWalking in tall grass or a cave · Lv 40–43
  • Exeggutor IslandWalking in tall grass or a cave · Lv 40–43
  • Poni WildsSurfing, Walking in tall grass or a cave · Lv 40–43
Sun 3 areas
  • Ancient Poni PathWalking in tall grass or a cave · Lv 40–43
  • Exeggutor IslandWalking in tall grass or a cave · Lv 40–43
  • Poni WildsSurfing, Walking in tall grass or a cave · Lv 40–43
Y 1 area
  • Friend Safari (Ground)Walking in tall grass or a cave · Lv 30
X 1 area
  • Friend Safari (Ground)Walking in tall grass or a cave · Lv 30
Platinum 9 areas
  • Canalave CitySurfing · Lv 20–40
  • Fuego IronworksSurfing, Walking in tall grass or a cave · Lv 20–40
  • Pastoria CitySurfing · Lv 20–40
  • Road 205 (south, towards Floaroma Town)Surfing · Lv 20–40
  • Road 212 (east, towards Pastoria City)Surfing · Lv 20–40
  • Road 213Surfing · Lv 20–40
  • Road 218Surfing, Walking in tall grass or a cave · Lv 20–40
  • Road 224Surfing, Walking in tall grass or a cave · Lv 35–55
  • Valley WindworksSurfing · Lv 20–40
Pearl 6 areas
  • Fuego IronworksWalking in tall grass or a cave · Lv 29–30
  • Road 218Walking in tall grass or a cave · Lv 28–30
  • Road 221Walking in tall grass or a cave · Lv 28–30
  • Road 222Walking in tall grass or a cave · Lv 40–42
  • Road 224Walking in tall grass or a cave · Lv 52–53
  • Road 230Walking in tall grass or a cave · Lv 51
Diamond 6 areas
  • Fuego IronworksWalking in tall grass or a cave · Lv 29–30
  • Road 218Walking in tall grass or a cave · Lv 28–30
  • Road 221Walking in tall grass or a cave · Lv 29–30
  • Road 222Walking in tall grass or a cave · Lv 40–42
  • Road 224Walking in tall grass or a cave · Lv 52–53
  • Road 230Walking in tall grass or a cave · Lv 51