PokemonLore

Legends Z-A

#423

Water

Ground

POKÉDEX No. #423

Gastrodon

Sea Slug Pokémon

Generation 4

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

Height0.9 m

Weight29.9 kg

AbilitiesSticky Hold

Forms1

Defensive Fingerprint

4×2×1×½×¼×0×

NORNormal 1×

FIRFire ½×

WATWater 1×

ELEElectric 0×

GRAGrass 4×

ICEIce 1×

FIGFighting 1×

POIPoison ½×

GRDGround 1×

FLYFlying 1×

PSYPsychic 1×

BUGBug 1×

ROCRock ½×

GHOGhost 1×

DRADragon 1×

DRKDark 1×

STESteel ½×

FAIFairy 1×

Base Stats

Lv.100 Range

HP111
332–426
Attack83
153–291
Defense68
126–258
Sp. Atk92
170–311
Sp. Def82
152–289
Speed39
74–194

Total475

/ 720

BST475

60 percentile (1025)+43 vs Gen 4 avg (432)

Stat Radar

This PokémonAverage

Weak to

Grass

Resists

Poison

Rock

Steel

Fire

Immune

Electric

Full Type Defense Chart ↓

Species Identity

Core species facts, alternate varieties, and Pokédex placements at a glance.

Generation

Generation 4

Habitat

Unknown

Color

Purple

Shape

Squiggle

Gender Difference

Forms Switchable

Evolves From

Shellos#422

Regional Pokédex Numbers

National	#423
Extended Sinnoh	#61
Galar	#231
Hisui	#83
Original Alola	#261
Original Poni	#76
Original Sinnoh	#61
Paldea	#328
Updated Alola	#342
Updated Poni	#89

Training Profile

Battle-ready training facts pulled from EV yield, growth curve, and wild held item data.

Base Experience

166

EV Yield

+2 HP

Growth Curve

Medium Fast

x³

Exp at Lv. 50

125,000

Exp at Lv. 100

1,000,000

Wild Held Items

No wild held item data available.

Evolution Chain

#422

Shellos

→

Level 30

#423

Gastrodon

Encounter Guide

Where this Pokémon appears in supported games, including method, level range, and encounter conditions.

1 spots

33% max

Friend Safari (Ground)

33%

Method: Walking in tall grass or a cave
Level Range: Lv. 30
Conditions: Randomly assigned to Friend Safari Slot 3

1 spots

33% max

Friend Safari (Ground)

33%

Method: Walking in tall grass or a cave
Level Range: Lv. 30
Conditions: Randomly assigned to Friend Safari Slot 3

Ultra Sun

2 spots

20% max

Ancient Poni Path

20%

Method: Surfing
Level Range: Lv. 41-44
Conditions: Any

Poni Breaker Coast

20%

Method: Surfing
Level Range: Lv. 41-44
Conditions: Any

Ultra Moon

2 spots

20% max

Ancient Poni Path

20%

Method: Surfing
Level Range: Lv. 41-44
Conditions: Any

Poni Breaker Coast

20%

Method: Surfing
Level Range: Lv. 41-44
Conditions: Any

Sun

1 spots

20% max

Poni Wilds

20%

Method: Surfing
Level Range: Lv. 40-43
Conditions: Any

Moon

1 spots

20% max

Poni Wilds

20%

Method: Surfing
Level Range: Lv. 40-43
Conditions: Any

Platinum

1 spots

20% max

Road 218

20%

Method: Walking in tall grass or a cave
Level Range: Lv. 28
Conditions: Not during a swarm

Pearl

1 spots

20% max

Road 221

20%

Method: Walking in tall grass or a cave
Level Range: Lv. 28
Conditions: Not during a swarm

Diamond

2 spots

20% max

Road 222

20%

Method: Walking in tall grass or a cave
Level Range: Lv. 40
Conditions: Not during a swarm

Road 224

20%

Method: Walking in tall grass or a cave
Level Range: Lv. 53
Conditions: Not during a swarm

Type Matchups

Understanding damage taken from different types is crucial for battles. Plan your team accordingly!

Weaknesses

4× Weakness

4×

Takes 4× damage from these types - extremely vulnerable!

Grass

4×

Resistances

½× Resistance

½×

Takes half damage from these types - good defense!

0.5×

0.5×

0.5×

0.5×

Immunities

0×

Completely immune to these types - no damage taken!

Electric

Tip: Build your team with Pokémon that cover each other's weaknesses!

Full Type Defense Chart

Damage multipliers from all 18 attacking types

1×

1×

1×

½×

1×

½×

1×

1×

½×

½×

1×

4×

0×

1×

1×

1×

1×

1×

Battle Profile

Offensive Coverage

Super effective against these types with STAB moves

Strategic Insight

Gastrodon's water/ground typing gives it 1 weakness but strong offensive coverage against ground, rock, fire, poison, steel, electric types

Battle Strategy

Offensive Coverage

Ground

Rock

Fire

Poison

Steel

Electric

Gastrodon's Water / Ground typing gives it 1 weakness but strong offensive coverage against ground, rock, fire, poison, steel, electric types

Recommended NaturesBased on stat distribution

Naive

+Speed−Sp. Def

Move Insights

High-signal moves surfaced from learnsets and move metadata, grouped by battle purpose.

Best STAB Options

Reliable same-type attacks that match this Pokémon's typing.

Hydro Pump

Learned at Lv. 47

Legends Arceus

Water

Power: 110Accuracy: 80PP: 5Special

Inflicts regular damage with no additional effect.

Earth Power

Learned at Lv. 39

Sword Shield

Ground

Power: 90Accuracy: 100PP: 10Special

Has a chance to lower the target’s Special Defense by one stage.

Muddy Water

Learned at Lv. 41

X Y

Water

Power: 90Accuracy: 85PP: 10Special

Has a chance to lower the target’s accuracy by one stage.

Coverage Picks

Off-type attacks that expand what this Pokémon can threaten.

Blizzard

TM/TR Moves

X Y

Ice

Power: 110Accuracy: 70PP: 5SpecialFreeze

Has a chance to freeze the target.

Body Slam

Learned at Lv. 29

X Y

Normal

Power: 85Accuracy: 100PP: 15PhysicalParalysis

Has a chance to paralyze the target.

Headbutt

Tutor Moves

Heartgold Soulsilver

Normal

Power: 70Accuracy: 100PP: 15Physical

Has a chance to make the target flinch.

Utility & Status

Support, disruption, and setup tools worth noticing.

Body Slam

Learned at Lv. 29

X Y

Normal

Power: 85Accuracy: 100PP: 15PhysicalParalysis

Has a chance to paralyze the target.

Attract

TM/TR Moves

X Y

Normal

Accuracy: 100PP: 15StatusInfatuation

Target falls in love if it has the opposite gender, and has a 50% chance to refuse attacking the user.

Blizzard

TM/TR Moves

X Y

Ice

Power: 110Accuracy: 70PP: 5SpecialFreeze

Has a chance to freeze the target.

Amnesia

TM/TR Moves

Sword Shield

Psychic

PP: 20Status

Raises the user’s Special Defense by two stages.

Related Guides & News

Guide

Evolution Strategies →

Guide

Stats & IVs Guide →

Related Pokémon

TCG Cards

View all Gastrodon trading cards and their competitive usage.

View Gastrodon TCG Cards →

Reference Data

Names in Other Languages

English	Gastrodon
Japanese	トリトドン
Japanese (Kanji)	トリトドン
Roomaji	Toritodon
Korean	트리토돈
French	Tritosor
German	Gastrodon
Spanish	Gastrodon
Italian	Gastrodon
Chinese (Traditional)	海兔獸
Chinese (Simplified)	海兔兽

Sprite Gallery

Diamond Pearl

Gastrodon shiny sprite (Diamond Pearl) — Shiny

Gastrodon shiny back sprite (Diamond Pearl) — Shiny Back

Heartgold Soulsilver

Gastrodon shiny sprite (Heartgold Soulsilver) — Shiny

Gastrodon shiny back sprite (Heartgold Soulsilver) — Shiny Back

Platinum

Gastrodon shiny sprite (Platinum) — Shiny

Gastrodon shiny back sprite (Platinum) — Shiny Back

Pokédex Data

Height

0.9 m

Weight

29.9 kg

Type

Water

Ground

Abilities

Prevents a held item from being removed by other Pokémon.

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

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

Breeding Information

🥚

Egg Groups

Water 1Indeterminate

⚧

Gender Ratio

♂

50%

♀

50%

🐣

Hatch Steps

5,100

Hatch Counter: 20

⚪

Capture Rate

Higher values mean easier to catch

❤️

Base Happiness

Initial friendship level

📈

Growth Rate

Medium Fast

Experience points needed to level up

Move Name

Harden

harden

Lv. 4

Mud Slap

mud-slap

Lv. 1

Mud Sport

mud-sport

Lv. 2

Recover

recover

Lv. 54

Water Gun

water-gun

Lv. 1

Water Pulse

water-pulse

Lv. 15

Tackle

tackle

Lv. 5

Mud Bomb

mud-bomb

Lv. 21

Ancient Power

ancient-power

Lv. 20

Hidden Power

hidden-power

Lv. 16

Rain Dance

rain-dance

Lv. 46

Body Slam

body-slam

Lv. 29

Earth Power

earth-power

Lv. 39

Muddy Water

muddy-water

Lv. 41

Hydro Pump

hydro-pump

Lv. 47

Memento

memento

Lv. 53

Pokédex Entries

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