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Grimer

#88 in the FireRed and LeafGreen Pokédex • Sludge Pokémon

FireRed

Sludge exposed to X rays from the moon transformed into GRIMER. It loves feeding on filthy things.

LeafGreen

Appears in filthy areas. It thrives by sucking up polluted sludge that is pumped out of factories.

Egg Group

Amorphous

Steps to Hatch

5,120

Effort Values Yielded

1 HP

Gender Ratio

50% male / 50% female

Capture Rate

190

Base Experience

65
PokémonRequiresEvolution
Grimer

Grimer

#88

Level 38

Muk

Muk

#89

FireRed

LocationMethodLevelChanceConditions

Celadon City

Fishing with a Super Rod30-401%

-

Pokémon Mansion

Pokemon Mansion (1F)

Walking in tall grass or a cave285%

-

Pokémon Mansion

Pokemon Mansion (2F)

Walking in tall grass or a cave285%

-

Pokémon Mansion

Pokemon Mansion (3F)

Walking in tall grass or a cave285%

-

Pokémon Mansion

Pokemon Mansion (B1F)

Walking in tall grass or a cave285%

-

LeafGreen

LocationMethodLevelChanceConditions

Celadon City

Fishing with a Super Rod30-401%

-

Pokémon Mansion

Pokemon Mansion (1F)

Walking in tall grass or a cave2820%

-

Pokémon Mansion

Pokemon Mansion (1F)

Walking in tall grass or a cave3010%

-

Pokémon Mansion

Pokemon Mansion (2F)

Walking in tall grass or a cave2820%

-

Pokémon Mansion

Pokemon Mansion (2F)

Walking in tall grass or a cave3010%

-

Pokémon Mansion

Pokemon Mansion (3F)

Walking in tall grass or a cave2820%

-

Pokémon Mansion

Pokemon Mansion (3F)

Walking in tall grass or a cave3010%

-

Pokémon Mansion

Pokemon Mansion (B1F)

Walking in tall grass or a cave2820%

-

Pokémon Mansion

Pokemon Mansion (B1F)

Walking in tall grass or a cave3010%

-

Dewgong

Muk

Grimer normal sprite

Normal

Shiny Grimer sprite

Shiny

Grimer

Sludge Pokémon

#88
Poison

Height

0.9 m

Weight

30 kg

Base XP

65

Abilities

StenchSticky Hold

HP

80

Attack

80

Defense

50

Sp. Atk

40

Sp. Def

50

Speed

25

Total

325

Type Chart

Weaknesses

Takes 2× from

GroundPsychic

Resistances

Takes 0.5× from

GrassFightingPoisonBug
Class
Description
StartPoundNormalPhysical4010035

A physical attack delivered with a long tail or a foreleg, etc.

StartPoison GasPoisonStatus-5540

The foe is sprayed with a cloud of toxic gas that may poison the foe.

4HardenNormalStatus--30

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

8DisableNormalStatus-5520

For a few turns, it prevents the foe from using the move it last used.

13SludgePoisonSpecial6510020

Toxic sludge is hurled at the foe. It may poison the target.

19MinimizeNormalStatus--20

The user compresses all the cells in its body to raise its evasiveness.

26ScreechNormalStatus-8540

An ear-splitting screech is emitted to sharply reduce the foe’s DEFENSE.

34Acid ArmorPoisonStatus--40

The user alters its cells to liquefy itself and sharply raise DEFENSE.

43Sludge BombPoisonSpecial9010010

Filthy sludge is hurled at the foe. It may poison the target.

53MementoDarkStatus-10010

The user faints, but sharply lowers the foe’s ATTACK and SP. ATK.

Class
Description
Curse???Status--10

A move that works differently for the GHOST-type and all the other types.

ExplosionNormalPhysical2501005

The user explodes to inflict terrible damage even while fainting itself.

HazeIceStatus--30

Eliminates all stat changes among all Pokémon engaged in battle.

ImprisonPsychicStatus--10

Prevents foes from using any move that is also known by the user.

LickGhostPhysical2010030

The foe is licked and hit with a long tongue. It may also paralyze.

Mean LookNormalStatus--5

The foe is fixed with a mean look that prevents it from escaping.

Shadow PunchGhostPhysical60-20

The user throws a punch from the shadows. It cannot be evaded.

Class
Description
TM06ToxicPoisonStatus-8510

A move that badly poisons the foe. Its poison damage worsens every turn.

TM10Hidden PowerNormalSpecial110015

An attack that varies in type and intensity depending on the user.

TM11Sunny DayFireStatus--5

The sun blazes for five turns, powering up FIRE-type moves.

TM12TauntDarkStatus-10020

The foe is taunted into a rage that allows it to use only attack moves.

TM17ProtectNormalStatus--10

Enables the user to evade all attacks. It may fail if used in succession.

TM18Rain DanceWaterStatus--5

A heavy rain falls for five turns, powering up WATER- type moves.

TM19Giga DrainGrassSpecial751005

A harsh attack that absorbs half the damage it inflicted to restore HP.

TM21FrustrationNormalPhysical-10020

This attack move grows more powerful the less the user likes its TRAINER.

TM24ThunderboltElectricSpecial9510015

A strong electrical attack that may also leave the foe paralyzed.

TM25ThunderElectricSpecial1207010

A brutal lightning attack that may also leave the foe paralyzed.

TM27ReturnNormalPhysical-10020

This attack move grows more powerful the more the user likes its TRAINER.

TM28DigGroundPhysical6010010

An attack that hits on the 2nd turn. Can also be used to exit dungeons.

TM32Double TeamNormalStatus--15

The user creates illusory copies of itself to raise its evasiveness.

TM34Shock WaveElectricSpecial60-20

A rapid jolt of electricity strikes the foe. It can’t be evaded.

TM35FlamethrowerFireSpecial9510015

The foe is scorched with intense flames. The foe may suffer a burn.

TM36Sludge BombPoisonSpecial9010010

Filthy sludge is hurled at the foe. It may poison the target.

TM38Fire BlastFireSpecial120855

The foe is hit with an intense flame. It may leave the target with a burn.

TM39Rock TombRockPhysical508010

Boulders are hurled at the foe. It also lowers the foe’s SPEED if it hits.

TM41TormentDarkStatus-10015

It enrages the foe, making it incapable of using the same move successively.

TM42FacadeNormalPhysical7010020

An attack that is boosted if user is burned, poisoned, or paralyzed.

TM43Secret PowerNormalPhysical7010020

An attack that may have an additional effect that varies with the terrain.

TM44RestPsychicStatus--5

The user sleeps for two turns to fully restore HP and heal any status problem.

TM45AttractNormalStatus-10015

If it is the other gender, the foe is made infatuated and unlikely to attack.

TM46ThiefDarkPhysical4010010

An attack that may take the foe’s held item if the user isn’t holding one.

Class
Description
Body SlamNormalPhysical8510015

The user drops its full body on the foe. It may leave the foe paralyzed.

ExplosionNormalPhysical2501005

The user explodes to inflict terrible damage even while fainting itself.

MimicNormalStatus--10

The user copies the move last used by the foe for the rest of the battle.

SubstituteNormalStatus--10

The user creates a decoy using one- quarter of its full HP.

Stench

Helps repel wild Pokémon.

Has a 10% chance of making target Pokémon flinch with each hit.

Sticky Hold

Prevents item theft.

Prevents a held item from being removed by other Pokémon.

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.

FR/LG / Pokédex

Grimer

Grimer

#88 in the FireRed and LeafGreen Pokédex • Sludge Pokémon

FireRed

Sludge exposed to X rays from the moon transformed into GRIMER. It loves feeding on filthy things.

LeafGreen

Appears in filthy areas. It thrives by sucking up polluted sludge that is pumped out of factories.

Egg Group

Amorphous

Steps to Hatch

5,120

Effort Values Yielded

1 HP

Gender Ratio

50% male / 50% female

Capture Rate

190

Base Experience

65
PokémonRequiresEvolution
Grimer

Grimer

#88

Level 38

Muk

Muk

#89

FireRed

LocationMethodLevelChanceConditions

Celadon City

Fishing with a Super Rod30-401%

-

Pokémon Mansion

Pokemon Mansion (1F)

Walking in tall grass or a cave285%

-

Pokémon Mansion

Pokemon Mansion (2F)

Walking in tall grass or a cave285%

-

Pokémon Mansion

Pokemon Mansion (3F)

Walking in tall grass or a cave285%

-

Pokémon Mansion

Pokemon Mansion (B1F)

Walking in tall grass or a cave285%

-

LeafGreen

LocationMethodLevelChanceConditions

Celadon City

Fishing with a Super Rod30-401%

-

Pokémon Mansion

Pokemon Mansion (1F)

Walking in tall grass or a cave2820%

-

Pokémon Mansion

Pokemon Mansion (1F)

Walking in tall grass or a cave3010%

-

Pokémon Mansion

Pokemon Mansion (2F)

Walking in tall grass or a cave2820%

-

Pokémon Mansion

Pokemon Mansion (2F)

Walking in tall grass or a cave3010%

-

Pokémon Mansion

Pokemon Mansion (3F)

Walking in tall grass or a cave2820%

-

Pokémon Mansion

Pokemon Mansion (3F)

Walking in tall grass or a cave3010%

-

Pokémon Mansion

Pokemon Mansion (B1F)

Walking in tall grass or a cave2820%

-

Pokémon Mansion

Pokemon Mansion (B1F)

Walking in tall grass or a cave3010%

-

Dewgong

Muk

Grimer normal sprite

Normal

Shiny Grimer sprite

Shiny

Grimer

Sludge Pokémon

#88
Poison

Height

0.9 m

Weight

30 kg

Base XP

65

Abilities

StenchSticky Hold

HP

80

Attack

80

Defense

50

Sp. Atk

40

Sp. Def

50

Speed

25

Total

325

Type Chart

Weaknesses

Takes 2× from

GroundPsychic

Resistances

Takes 0.5× from

GrassFightingPoisonBug
Class
Description
StartPoundNormalPhysical4010035

A physical attack delivered with a long tail or a foreleg, etc.

StartPoison GasPoisonStatus-5540

The foe is sprayed with a cloud of toxic gas that may poison the foe.

4HardenNormalStatus--30

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

8DisableNormalStatus-5520

For a few turns, it prevents the foe from using the move it last used.

13SludgePoisonSpecial6510020

Toxic sludge is hurled at the foe. It may poison the target.

19MinimizeNormalStatus--20

The user compresses all the cells in its body to raise its evasiveness.

26ScreechNormalStatus-8540

An ear-splitting screech is emitted to sharply reduce the foe’s DEFENSE.

34Acid ArmorPoisonStatus--40

The user alters its cells to liquefy itself and sharply raise DEFENSE.

43Sludge BombPoisonSpecial9010010

Filthy sludge is hurled at the foe. It may poison the target.

53MementoDarkStatus-10010

The user faints, but sharply lowers the foe’s ATTACK and SP. ATK.

Class
Description
Curse???Status--10

A move that works differently for the GHOST-type and all the other types.

ExplosionNormalPhysical2501005

The user explodes to inflict terrible damage even while fainting itself.

HazeIceStatus--30

Eliminates all stat changes among all Pokémon engaged in battle.

ImprisonPsychicStatus--10

Prevents foes from using any move that is also known by the user.

LickGhostPhysical2010030

The foe is licked and hit with a long tongue. It may also paralyze.

Mean LookNormalStatus--5

The foe is fixed with a mean look that prevents it from escaping.

Shadow PunchGhostPhysical60-20

The user throws a punch from the shadows. It cannot be evaded.

Class
Description
TM06ToxicPoisonStatus-8510

A move that badly poisons the foe. Its poison damage worsens every turn.

TM10Hidden PowerNormalSpecial110015

An attack that varies in type and intensity depending on the user.

TM11Sunny DayFireStatus--5

The sun blazes for five turns, powering up FIRE-type moves.

TM12TauntDarkStatus-10020

The foe is taunted into a rage that allows it to use only attack moves.

TM17ProtectNormalStatus--10

Enables the user to evade all attacks. It may fail if used in succession.

TM18Rain DanceWaterStatus--5

A heavy rain falls for five turns, powering up WATER- type moves.

TM19Giga DrainGrassSpecial751005

A harsh attack that absorbs half the damage it inflicted to restore HP.

TM21FrustrationNormalPhysical-10020

This attack move grows more powerful the less the user likes its TRAINER.

TM24ThunderboltElectricSpecial9510015

A strong electrical attack that may also leave the foe paralyzed.

TM25ThunderElectricSpecial1207010

A brutal lightning attack that may also leave the foe paralyzed.

TM27ReturnNormalPhysical-10020

This attack move grows more powerful the more the user likes its TRAINER.

TM28DigGroundPhysical6010010

An attack that hits on the 2nd turn. Can also be used to exit dungeons.

TM32Double TeamNormalStatus--15

The user creates illusory copies of itself to raise its evasiveness.

TM34Shock WaveElectricSpecial60-20

A rapid jolt of electricity strikes the foe. It can’t be evaded.

TM35FlamethrowerFireSpecial9510015

The foe is scorched with intense flames. The foe may suffer a burn.

TM36Sludge BombPoisonSpecial9010010

Filthy sludge is hurled at the foe. It may poison the target.

TM38Fire BlastFireSpecial120855

The foe is hit with an intense flame. It may leave the target with a burn.

TM39Rock TombRockPhysical508010

Boulders are hurled at the foe. It also lowers the foe’s SPEED if it hits.

TM41TormentDarkStatus-10015

It enrages the foe, making it incapable of using the same move successively.

TM42FacadeNormalPhysical7010020

An attack that is boosted if user is burned, poisoned, or paralyzed.

TM43Secret PowerNormalPhysical7010020

An attack that may have an additional effect that varies with the terrain.

TM44RestPsychicStatus--5

The user sleeps for two turns to fully restore HP and heal any status problem.

TM45AttractNormalStatus-10015

If it is the other gender, the foe is made infatuated and unlikely to attack.

TM46ThiefDarkPhysical4010010

An attack that may take the foe’s held item if the user isn’t holding one.

Class
Description
Body SlamNormalPhysical8510015

The user drops its full body on the foe. It may leave the foe paralyzed.

ExplosionNormalPhysical2501005

The user explodes to inflict terrible damage even while fainting itself.

MimicNormalStatus--10

The user copies the move last used by the foe for the rest of the battle.

SubstituteNormalStatus--10

The user creates a decoy using one- quarter of its full HP.

Stench

Helps repel wild Pokémon.

Has a 10% chance of making target Pokémon flinch with each hit.

Sticky Hold

Prevents item theft.

Prevents a held item from being removed by other Pokémon.

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.