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Gastrodon

#423 in the Black and White Pokédex • Sea Slug Pokémon

Pokémon Black

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

Pokémon White

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

Pokédexes

-

Egg Group

Water 1Amorphous

Steps to Hatch

5,120

Effort Values Yielded

2 HP

Gender Ratio

50% male / 50% female

Capture Rate

75

Base Experience

166
PokémonRequiresEvolution
Shellos

Shellos

#422

Level 30

Gastrodon

Gastrodon

#423

Shellos

Drifloon

Gastrodon normal sprite

Normal

Shiny Gastrodon sprite

Shiny

Gastrodon

Sea Slug Pokémon

#423
WaterGround

Height

0.9 m

Weight

29.9 kg

Base XP

166

Abilities

Sticky HoldStorm DrainSand Force

HP

111

Attack

83

Defense

68

Sp. Atk

92

Sp. Def

82

Speed

39

Total

475

Type Chart

Weaknesses

Takes 4× from

Grass

Resistances

Takes 0× from

Electric

Takes 0.5× from

FirePoisonRockSteel
Class
Description
StartHardenNormalStatus--30

The user stiffens all the muscles in its body to raise its Defense stat.

StartMud-SlapGroundSpecial2010010

The user hurls mud in the target’s face to inflict damage and lower its accuracy.

StartMud SportGroundStatus--15

The user covers itself with mud. It weakens Electric-type moves while the user is in the battle.

StartWater PulseWaterSpecial6010020

The user attacks the target with a pulsing blast of water. It may also confuse the target.

2Mud SportGroundStatus--15

The user covers itself with mud. It weakens Electric-type moves while the user is in the battle.

4HardenNormalStatus--30

The user stiffens all the muscles in its body to raise its Defense stat.

7Water PulseWaterSpecial6010020

The user attacks the target with a pulsing blast of water. It may also confuse the target.

11Mud BombGroundSpecial658510

The user launches a hard-packed mud ball to attack. It may also lower the target’s accuracy.

16Hidden PowerNormalSpecial110015

A unique attack that varies in type and intensity depending on the Pokémon using it.

22Rain DanceWaterStatus--5

The user summons a heavy rain that falls for five turns, powering up Water-type moves.

29Body SlamNormalPhysical8510015

The user drops onto the target with its full body weight. It may also leave the target with paralysis.

41Muddy WaterWaterSpecial958510

The user attacks by shooting muddy water at the opposing team. It may also lower the targets’ accuracy.

54RecoverNormalStatus--5

Restoring its own cells, the user restores its own HP by half of its max HP.

Class
Description
HM03SurfWaterSpecial9510015

It swamps the area around the user with a giant wave. It can also be used for crossing water.

HM04StrengthNormalPhysical8010015

The target is slugged with a punch thrown at maximum power. It can also be used to move heavy boulders.

HM05WaterfallWaterPhysical8010015

The user charges at the target and may make it flinch. It can also be used to climb a waterfall.

HM06DiveWaterPhysical8010010

Diving on the first turn, the user floats up and attacks on the second turn. It can be used to dive deep in the ocean.

TM06ToxicPoisonStatus-9010

A move that leaves the target badly poisoned. Its poison damage worsens every turn.

TM07HailIceStatus--10

The user summons a hailstorm lasting five turns. It damages all Pokémon except the Ice type.

TM10Hidden PowerNormalSpecial110015

A unique attack that varies in type and intensity depending on the Pokémon using it.

TM13Ice BeamIceSpecial9510010

The target is struck with an icy-cold beam of energy. It may also freeze the target solid.

TM14BlizzardIceSpecial120705

A howling blizzard is summoned to strike the opposing team. It may also freeze them solid.

TM15Hyper BeamNormalSpecial150905

The target is attacked with a powerful beam. The user must rest on the next turn to regain its energy.

TM17ProtectNormalStatus--10

It enables the user to evade all attacks. Its chance of failing rises if it is used in succession.

TM18Rain DanceWaterStatus--5

The user summons a heavy rain that falls for five turns, powering up Water-type moves.

TM21FrustrationNormalPhysical-10020

A full-power attack that grows more powerful the less the user likes its Trainer.

TM26EarthquakeGroundPhysical10010010

The user sets off an earthquake that strikes those around it.

TM27ReturnNormalPhysical-10020

A full-power attack that grows more powerful the more the user likes its Trainer.

TM28DigGroundPhysical8010010

The user burrows, then attacks on the second turn. It can also be used to exit dungeons.

TM32Double TeamNormalStatus--15

By moving rapidly, the user makes illusory copies of itself to raise its evasiveness.

TM34Sludge WavePoisonSpecial9510010

It swamps the area around the user with a giant sludge wave. It may also poison those hit.

TM36Sludge BombPoisonSpecial9010010

Unsanitary sludge is hurled at the target. It may also poison the target.

TM37SandstormRockStatus--10

A five-turn sandstorm is summoned to hurt all combatants except the Rock, Ground, and Steel types.

TM39Rock TombRockPhysical508010

Boulders are hurled at the target. It also lowers the target’s Speed by preventing its movement.

TM42FacadeNormalPhysical7010020

An attack move that doubles its power if the user is poisoned, burned, or has paralysis.

TM44RestPsychicStatus--5

The user goes to sleep for two turns. It fully restores the user’s HP and heals any status problem.

TM45AttractNormalStatus-10015

If it is the opposite gender of the user, the target becomes infatuated and less likely to attack.

TM48RoundNormalSpecial6010015

The user attacks the target with a song. Others can join in the Round and make the attack do greater damage.

TM55ScaldWaterSpecial8010015

The user shoots boiling hot water at its target. It may also leave the target with a burn.

TM68Giga ImpactNormalPhysical150905

The user charges at the target using every bit of its power. The user must rest on the next turn.

TM70FlashNormalStatus-10020

The user flashes a bright light that cuts the target’s accuracy. It can also be used to illuminate caves.

TM71Stone EdgeRockPhysical100805

The user stabs the foe with sharpened stones from below. It has a high critical-hit ratio.

TM78BulldozeGroundPhysical6010020

The user stomps down on the ground and attacks everything in the area. Hit Pokémon’s Speed stat is reduced.

TM80Rock SlideRockPhysical759010

Large boulders are hurled at the opposing team to inflict damage. It may also make the targets flinch.

TM87SwaggerNormalStatus-9015

The user enrages and confuses the target. However, it also sharply raises the target’s Attack stat.

TM90SubstituteNormalStatus--10

The user makes a copy of itself using some of its HP. The copy serves as the user’s decoy.

TM94Rock SmashFightingPhysical4010015

The user attacks with a punch that can shatter a rock. It may also lower the target’s Defense stat.

Sticky Hold

Ability Slot 1

Protects the Pokémon from item theft.

Prevents a held item from being removed by other Pokémon.

Storm Drain

Ability Slot 2

Draws in all Water-type moves to up Sp. Attack.

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

Sand Force

Hidden Ability

Boosts certain moves’ power in a sandstorm.

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

Dittobase

© 2026 dittobase.com. All rights reserved.

This website is an independent platform and is not associated with, validated, backed, or sponsored by Nintendo, Game Freak, Niantic, or The Pokémon Company.

B/W / Pokédex

Gastrodon

Gastrodon

#423 in the Black and White Pokédex • Sea Slug Pokémon

Pokémon Black

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

Pokémon White

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

Pokédexes

-

Egg Group

Water 1Amorphous

Steps to Hatch

5,120

Effort Values Yielded

2 HP

Gender Ratio

50% male / 50% female

Capture Rate

75

Base Experience

166
PokémonRequiresEvolution
Shellos

Shellos

#422

Level 30

Gastrodon

Gastrodon

#423

Shellos

Drifloon

Gastrodon normal sprite

Normal

Shiny Gastrodon sprite

Shiny

Gastrodon

Sea Slug Pokémon

#423
WaterGround

Height

0.9 m

Weight

29.9 kg

Base XP

166

Abilities

Sticky HoldStorm DrainSand Force

HP

111

Attack

83

Defense

68

Sp. Atk

92

Sp. Def

82

Speed

39

Total

475

Type Chart

Weaknesses

Takes 4× from

Grass

Resistances

Takes 0× from

Electric

Takes 0.5× from

FirePoisonRockSteel
Class
Description
StartHardenNormalStatus--30

The user stiffens all the muscles in its body to raise its Defense stat.

StartMud-SlapGroundSpecial2010010

The user hurls mud in the target’s face to inflict damage and lower its accuracy.

StartMud SportGroundStatus--15

The user covers itself with mud. It weakens Electric-type moves while the user is in the battle.

StartWater PulseWaterSpecial6010020

The user attacks the target with a pulsing blast of water. It may also confuse the target.

2Mud SportGroundStatus--15

The user covers itself with mud. It weakens Electric-type moves while the user is in the battle.

4HardenNormalStatus--30

The user stiffens all the muscles in its body to raise its Defense stat.

7Water PulseWaterSpecial6010020

The user attacks the target with a pulsing blast of water. It may also confuse the target.

11Mud BombGroundSpecial658510

The user launches a hard-packed mud ball to attack. It may also lower the target’s accuracy.

16Hidden PowerNormalSpecial110015

A unique attack that varies in type and intensity depending on the Pokémon using it.

22Rain DanceWaterStatus--5

The user summons a heavy rain that falls for five turns, powering up Water-type moves.

29Body SlamNormalPhysical8510015

The user drops onto the target with its full body weight. It may also leave the target with paralysis.

41Muddy WaterWaterSpecial958510

The user attacks by shooting muddy water at the opposing team. It may also lower the targets’ accuracy.

54RecoverNormalStatus--5

Restoring its own cells, the user restores its own HP by half of its max HP.

Class
Description
HM03SurfWaterSpecial9510015

It swamps the area around the user with a giant wave. It can also be used for crossing water.

HM04StrengthNormalPhysical8010015

The target is slugged with a punch thrown at maximum power. It can also be used to move heavy boulders.

HM05WaterfallWaterPhysical8010015

The user charges at the target and may make it flinch. It can also be used to climb a waterfall.

HM06DiveWaterPhysical8010010

Diving on the first turn, the user floats up and attacks on the second turn. It can be used to dive deep in the ocean.

TM06ToxicPoisonStatus-9010

A move that leaves the target badly poisoned. Its poison damage worsens every turn.

TM07HailIceStatus--10

The user summons a hailstorm lasting five turns. It damages all Pokémon except the Ice type.

TM10Hidden PowerNormalSpecial110015

A unique attack that varies in type and intensity depending on the Pokémon using it.

TM13Ice BeamIceSpecial9510010

The target is struck with an icy-cold beam of energy. It may also freeze the target solid.

TM14BlizzardIceSpecial120705

A howling blizzard is summoned to strike the opposing team. It may also freeze them solid.

TM15Hyper BeamNormalSpecial150905

The target is attacked with a powerful beam. The user must rest on the next turn to regain its energy.

TM17ProtectNormalStatus--10

It enables the user to evade all attacks. Its chance of failing rises if it is used in succession.

TM18Rain DanceWaterStatus--5

The user summons a heavy rain that falls for five turns, powering up Water-type moves.

TM21FrustrationNormalPhysical-10020

A full-power attack that grows more powerful the less the user likes its Trainer.

TM26EarthquakeGroundPhysical10010010

The user sets off an earthquake that strikes those around it.

TM27ReturnNormalPhysical-10020

A full-power attack that grows more powerful the more the user likes its Trainer.

TM28DigGroundPhysical8010010

The user burrows, then attacks on the second turn. It can also be used to exit dungeons.

TM32Double TeamNormalStatus--15

By moving rapidly, the user makes illusory copies of itself to raise its evasiveness.

TM34Sludge WavePoisonSpecial9510010

It swamps the area around the user with a giant sludge wave. It may also poison those hit.

TM36Sludge BombPoisonSpecial9010010

Unsanitary sludge is hurled at the target. It may also poison the target.

TM37SandstormRockStatus--10

A five-turn sandstorm is summoned to hurt all combatants except the Rock, Ground, and Steel types.

TM39Rock TombRockPhysical508010

Boulders are hurled at the target. It also lowers the target’s Speed by preventing its movement.

TM42FacadeNormalPhysical7010020

An attack move that doubles its power if the user is poisoned, burned, or has paralysis.

TM44RestPsychicStatus--5

The user goes to sleep for two turns. It fully restores the user’s HP and heals any status problem.

TM45AttractNormalStatus-10015

If it is the opposite gender of the user, the target becomes infatuated and less likely to attack.

TM48RoundNormalSpecial6010015

The user attacks the target with a song. Others can join in the Round and make the attack do greater damage.

TM55ScaldWaterSpecial8010015

The user shoots boiling hot water at its target. It may also leave the target with a burn.

TM68Giga ImpactNormalPhysical150905

The user charges at the target using every bit of its power. The user must rest on the next turn.

TM70FlashNormalStatus-10020

The user flashes a bright light that cuts the target’s accuracy. It can also be used to illuminate caves.

TM71Stone EdgeRockPhysical100805

The user stabs the foe with sharpened stones from below. It has a high critical-hit ratio.

TM78BulldozeGroundPhysical6010020

The user stomps down on the ground and attacks everything in the area. Hit Pokémon’s Speed stat is reduced.

TM80Rock SlideRockPhysical759010

Large boulders are hurled at the opposing team to inflict damage. It may also make the targets flinch.

TM87SwaggerNormalStatus-9015

The user enrages and confuses the target. However, it also sharply raises the target’s Attack stat.

TM90SubstituteNormalStatus--10

The user makes a copy of itself using some of its HP. The copy serves as the user’s decoy.

TM94Rock SmashFightingPhysical4010015

The user attacks with a punch that can shatter a rock. It may also lower the target’s Defense stat.

Sticky Hold

Ability Slot 1

Protects the Pokémon from item theft.

Prevents a held item from being removed by other Pokémon.

Storm Drain

Ability Slot 2

Draws in all Water-type moves to up Sp. Attack.

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

Sand Force

Hidden Ability

Boosts certain moves’ power in a sandstorm.

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

Dittobase

© 2026 dittobase.com. All rights reserved.

This website is an independent platform and is not associated with, validated, backed, or sponsored by Nintendo, Game Freak, Niantic, or The Pokémon Company.