Gastrodon: Stats, Moves, Weakness & Evolution

Base stats

HP111186–218332–426

Atk8392–148153–291

Def6879–132126–258

SpA92100–158170–311

SpD8291–147152–289

Spe3953–10074–194

Total475Higher than 57% of Pokémon

Ranges in Pokémon Champions at Lv 50: 0 Stat Points with a −10% Stat Alignment to 32 Stat Points with a +10% one (HP has no alignment).Ranges in the main games at Lv 100: 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

Calculate damage →

Type matchups

WaterGroundshow which type causes itweaknessresistance

Weak to

4×

Grass

Resists

½×

FirePoisonRockSteel

Immune to

0×

Electric

Takes normal damage from 12 types

NormalFightingFlyingGroundBugGhostWaterPsychicIceDragonDarkFairy

With : Water becomes 0×

Speed tiers

The faster Pokémon moves first each turn, so knowing who you outspeed decides a lot of battles. These are its Speed values at Lv 50 in Pokémon Champions (base Speed 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 on Showdown.

Speed at Lv 50 in Pokémon Champions: Gastrodon against the 30 most used Pokémon in Champions VGC on Showdown, fastest first
Speed		Pokémon
203		Mega Garchomp ZModest · 32 SP · #21 on Showdown
200		Mega GengarTimid · 32 SP · #26 on Showdown
190		Mega Raichu YTimid · 23 SP · #13 on Showdown
189		Mega SalamenceTimid · 32 SP · #4 on Showdown
184		WhimsicottTimid · 32 SP · #23 on Showdown
178		Mega MetagrossJolly · 32 SP · #28 on Showdown
178		Mega StaraptorJolly · 32 SP · #29 on Showdown
172		SneaslerAdamant · 32 SP · #2 on Showdown
169		Mega FloetteTimid · 32 SP · #17 on Showdown
169		GarchompJolly · 32 SP · #19 on Showdown
167		Mega Charizard YTimid · 32 SP · #14 on Showdown
167		Mega GardevoirTimid · 32 SP · #20 on Showdown
161		IndeedeeTimid · 32 SP · #30 on Showdown
156		Hisuian ArcanineJolly · 32 SP · #16 on Showdown
150		ArchaludonTimid · 32 SP · #9 on Showdown
149		GholdengoTimid · 32 SP · #8 on Showdown
143		BasculegionJolly · 32 SP · #6 on Showdown
128		PelipperTimid · 32 SP · #12 on Showdown
120		VolcaronaBold · 0 SP · #25 on Showdown
105		RillaboomAdamant · 0 SP · #1 on Showdown
101		MiloticCalm · 0 SP · #15 on Showdown
100		Gastrodon · Max+32 SP, Speed-raising alignment
95		SylveonModest · 15 SP · #18 on Showdown
94		Female IndeedeeRelaxed · 0 SP · #7 on Showdown
91		Gastrodon · Max32 SP, neutral alignment
90		PolitoedCalm · 0 SP · #22 on Showdown
90		SinistchaBold · 0 SP · #24 on Showdown
85		ArmarougeQuiet · 0 SP · #27 on Showdown
80		IncineroarCareful · 0 SP · #3 on Showdown
80		FarigirafBold · 0 SP · #11 on Showdown
70		KingambitAdamant · 0 SP · #5 on Showdown
60		Mega GolisopodAdamant · 0 SP · #10 on Showdown
59		Gastrodon · No SP0 SP, neutral alignment

Smogon · Showdown 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.

Abilities

This Pokémon cannot lose its held item due to another Pokémon's Ability or attack.
Everything about Sticky Hold →
Other Pokémon with Sticky Hold 9
Grimer Muk Gulpin Swalot Shellos Trubbish Accelgor Dipplin Hydrapple
This Pokémon draws Water moves to itself to raise Sp. Atk by 1; Water .
Everything about Storm Drain →
Other Pokémon with Storm Drain 7
Lileep Cradily Shellos Finneon Lumineon Maractus Tatsugiri
This Pokémon's Ground/Rock/Steel attacks do 1.3× in Sandstorm; to it.
Everything about Sand Force →
Other Pokémon with Sand Force 15
Diglett Dugtrio Mega Steelix Nosepass Shellos Mega Garchomp Hippopotas Hippowdon Probopass Roggenrola Boldore Gigalith Drilbur Excadrill Landorus

Competitive

Smogon · Showdown On Showdown

Sep 2026

Other Showdown formats Scarlet & Violet, with Tera

SV SinglesRUSV Doubles(DUU)National DexRU

7.5% of teams · rank #27 · Singles · 1630 weighting · 20,763 battles · Sep 2026

Most common build

Item: Rocky Helmet
Ability
Nature: Bold
EVs: 252 HP / 252 Def / 4 SpD
Tera Type: Ghost

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

Usage by rating

All games7.4%
1500 weighting7.6%
1630 weighting7.5%
1760 weighting9.2%

Usage by month

Oct 20257.5%

Moves

Items

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

Cyclizar42.8%
Noivern39.1%
Entei38.6%
Gardevoir28.9%
Gengar20.8%
Registeel20.7%
Jirachi20.1%
Empoleon17.3%

Checks & counters

Chesnaught61.6%
Krookodile31.1%
Jirachi28.1%
Noivern15.9%

Evolution

#0422ShellosWater
1. Level 30
  #0423GastrodonWaterGround

Moves

Level up 11


1	HardenRaises the user's Defense by 1.	Normal	Status	—	—	30
1	Mud-Slap100% chance to lower the target's accuracy by 1.	Ground	Spec	20	100%	10
1	RecoverHeals the user by 50% of its max HP.	Normal	Status	—	—	5
1	Water GunNo additional effect.	Water	Spec	40	100%	25
15	Water Pulse20% chance to confuse the target.	Water	Spec	60	100%	20
20	Ancient Power10% chance to raise all stats by 1 (not acc/eva).	Rock	Spec	60	100%	5
25	Body Slam30% chance to paralyze the target.	Normal	Phys	85	100%	15
33	Muddy Water30% chance to lower the foe(s) accuracy by 1.	Water	Spec	90	85%	10
39	Earth Power10% chance to lower the target's Sp. Def by 1.	Ground	Spec	90	100%	10
46	Rain DanceFor 5 turns, heavy rain powers Water moves.	Water	Status	—	—	5
53	MementoLowers target's Attack, Sp. Atk by 2. User faints.	Dark	Status	—	100%	10

TM / HM / TR 47


TM01	Take DownHas 1/4 recoil.	Normal	Phys	90	85%	20
TM05	Mud-Slap100% chance to lower the target's accuracy by 1.	Ground	Spec	20	100%	10
TM07	ProtectPrevents moves from affecting the user this turn.	Normal	Status	—	—	10
TM11	Water Pulse20% chance to confuse the target.	Water	Spec	60	100%	20
TM22	Chilling Water100% chance to lower the target's Attack by 1.	Water	Spec	50	100%	20
TM25	FacadePower doubles if user is burn/poison/paralyzed.	Normal	Phys	70	100%	20
TM28	Bulldoze100% chance lower adjacent Pkmn Speed by 1.	Ground	Phys	60	100%	20
TM34	Icy Wind100% chance to lower the foe(s) Speed by 1.	Ice	Spec	55	95%	15
TM35	Mud Shot100% chance to lower the target's Speed by 1.	Ground	Spec	55	95%	15
TM36	Rock Tomb100% chance to lower the target's Speed by 1.	Rock	Phys	60	95%	15
TM47	EndureUser survives attacks this turn with at least 1 HP.	Normal	Status	—	—	10
TM50	Rain DanceFor 5 turns, heavy rain powers Water moves.	Water	Status	—	—	5
TM51	SandstormFor 5 turns, a sandstorm rages. Rock: 1.5× SpD.	Rock	Status	—	—	10
TM52	SnowscapeFor 5 turns, snow falls. Ice: 1.5× Def.	Ice	Status	—	—	10
TM55	DigDigs underground turn 1, strikes turn 2.	Ground	Phys	80	100%	10
TM66	Body Slam30% chance to paralyze the target.	Normal	Phys	85	100%	15
TM70	Sleep TalkUser must be asleep. Uses another known move.	Normal	Status	—	—	10
TM76	Rock BlastHits 2-5 times in one turn.	Rock	Phys	25	90%	10
TM77	Waterfall20% chance to make the target flinch.	Water	Phys	80	100%	15
TM84	Stomping TantrumPower doubles if the user's last move failed.	Ground	Phys	75	100%	10
TM85	RestUser sleeps 2 turns and restores HP and status.	Psychic	Status	—	—	5
TM86	Rock Slide30% chance to make the foe(s) flinch.	Rock	Phys	75	90%	10
TM90	SpikesHurts grounded foes on switch-in. Max 3 layers.	Ground	Status	—	—	20
TM103	SubstituteUser takes 1/4 its max HP to put in a substitute.	Normal	Status	—	—	10
TM110	Liquidation20% chance to lower the target's Defense by 1.	Water	Phys	85	100%	10
TM116	Stealth RockHurts foes on switch-in. Factors Rock weakness.	Rock	Status	—	—	20
TM123	SurfHits adjacent Pokémon. Double damage on Dive.	Water	Spec	90	100%	15
TM128	AmnesiaRaises the user's Sp. Def by 2.	Psychic	Status	—	—	20
TM130	Helping HandOne adjacent ally's move power is 1.5× this turn.	Normal	Status	—	—	20
TM133	Earth Power10% chance to lower the target's Sp. Def by 1.	Ground	Spec	90	100%	10
TM135	Ice Beam10% chance to freeze the target.	Ice	Spec	90	100%	10
TM142	Hydro PumpNo additional effect.	Water	Spec	110	80%	5
TM143	Blizzard10% chance to freeze foe(s). Can't miss in Snow.	Ice	Spec	110	70%	5
TM148	Sludge Bomb30% chance to poison the target.	Poison	Spec	90	100%	10
TM149	EarthquakeHits adjacent Pokémon. Double damage on Dig.	Ground	Phys	100	100%	10
TM150	Stone EdgeHigh critical hit ratio.	Rock	Phys	100	80%	5
TM152	Giga ImpactUser cannot move next turn.	Normal	Phys	150	90%	5
TM163	Hyper BeamUser cannot move next turn.	Normal	Spec	150	90%	5
TM171	Tera BlastIf Terastallized: Phys. if Atk > SpA, type = Tera.	Normal	Spec	80	100%	10
TM176	Sand TombTraps and damages the target for 4-5 turns.	Ground	Phys	35	85%	15
TM193	Weather BallPower doubles and type varies in each weather.	Normal	Spec	50	100%	10
TM202	Pain SplitShares HP of user and target equally.	Normal	Status	—	—	20
TM208	WhirlpoolTraps and damages the target for 4-5 turns.	Water	Spec	35	85%	15
TM209	Muddy Water30% chance to lower the foe(s) accuracy by 1.	Water	Spec	90	85%	10
TM214	Sludge Wave10% chance to poison adjacent Pokémon.	Poison	Spec	95	100%	10
TM219	Skitter Smack100% chance to lower target's Sp. Atk by 1.	Bug	Phys	70	90%	10
TM224	CurseCurses if Ghost, else -1 Spe, +1 Atk, +1 Def.	Ghost	Status	—	—	10

Biology

A relative of the Shellder line, Gastrodon used to have a shell. Traces of it still remain in its genes. It can excrete different mucuses to soften blows, make its flesh bitter to deter predators, and melt prey. East and west sea Gastrodon may fight each other if they meet.

Adapted from Wikipedia: List of generation IV Pokémon · CC BY-SA 4.0 · edited.

Polls & views

Official vote, Japan#289 of 720 in the 2016 Pokémon General Election 720 (Japan)Official results, via Cinematoday

Each line is one source, as it published it. Polls counted every form under its species.

Pokédex entries

: Sea Slug Pokémon
: Sinnoh · Diamond & Pearl
Color: Purple

: —
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

Eats beach sand for nourishment. Should one Gastrodon encounter another of a different color, a fierce battle will inevitably ensue.
Legends: Arceus
The softness of its body helps disperse the force of impacts, so although its body is uncommonly squishy, it’s also surprisingly resilient.
Shield
Its search for food sometimes leads it onto land, where it leaves behind a sticky trail of slime as it passes through.
Sword
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
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
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
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
When its natural enemy attacks, it oozes purple fluid and escapes.
HeartGold · SoulSilver · X · Omega Ruby
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
It apparently had a huge shell for protection in ancient times. It lives in shallow tidal pools.
Pearl · Y · Alpha Sapphire
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

English: Gastrodon
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

Artwork and 3D models

Generation IX · animated models

Generation VIII · animated models

Gen VII · Gen VI · Gen V

Generation IV

Training

: 2 HP
: 75 ≈9.8% with a Poké Ball at full HP
: 70
: 166
: Medium

Breeding

: Water 1Amorphous
: ♂ 50%♀ 50%
: 20 egg cycles ≈5,355 steps (Gen IV–VII)

Where to find

Evolves from Shellos: Level 30.

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

Locations cover Red & Blue to Sword & Shield (with its DLC) and Let’s Go. We don’t have them yet for Legends: Arceus, Brilliant Diamond & Shining Pearl, Scarlet & Violet and Legends: Z-A.