Is Grimer Good in Red & Blue Playthrough?
Slow and limited offensively. Grimer doesn't offer much until it evolves into Muk, and even then Poison typing keeps both from being high-priority picks.
Brock's typing presses Grimer's defenses.
Grimer trades roughly evenly with Misty's team.
Grimer trades roughly evenly with Lt. Surge's team.
Erika's typing presses Grimer's defenses.
Koga's typing presses Grimer's defenses.
Grimer trades roughly evenly with Sabrina's team.
Muk trades roughly evenly with Blaine's team.
Muk trades roughly evenly with Giovanni's team.
Muk trades roughly evenly with Lorelei's team.
Muk trades roughly evenly with Bruno's team.
Agatha's Pokemon outpace and outclass Muk here.
Muk trades roughly evenly with Lance's team.
Muk trades roughly evenly with Blue's team.
Catchable
Catch Grimer in the Pokémon Mansion (walking, Lv 30, rare).
Recommended Moves
- After Misty
- TM08NormalBody SlamPower 85Accuracy 100%PP 15S.S. Anne
- After Lt. Surge
- TM24ElectricThunderboltPower 95Accuracy 100%PP 15Prize for defeating Vermilion Gym Leader Lt. Surge
- After Erika
- TM21GrassMega DrainPower 40Accuracy 100%PP 10Prize for defeating Celadon Gym Leader Erika
- LV 37PoisonSludgePower 98Accuracy 100%PP 20
- After Koga
- TM36NormalSelf-DestructPower 130Accuracy 100%PP 5Silph Co.
- TM25ElectricThunderPower 120Accuracy 70%PP 10Kanto Power Plant
- After Blaine
- TM38FireFire BlastPower 120Accuracy 85%PP 5Prize for defeating Cinnabar Gym Leader Blaine
- After Giovanni
- TM47NormalExplosionPower 170Accuracy 100%PP 5Victory Road 3F
Evolve Grimer to Muk
Grimer evolves into Muk at Level 38. Your Grimer should hit Level 38 before you reach Blaine, at typical leveling pace.
Recommended Moves
- STARTING (Lv 38)
- LV 38PoisonSludgePower 98Accuracy 100%PP 20
- After Misty
- TM08NormalBody SlamPower 85Accuracy 100%PP 15S.S. Anne
- After Lt. Surge
- TM15NormalHyper BeamPower 150Accuracy 90%PP 5Rocket Game Corner
- TM24ElectricThunderboltPower 95Accuracy 100%PP 15Prize for defeating Vermilion Gym Leader Lt. Surge
- After Koga
- TM36NormalSelf-DestructPower 130Accuracy 100%PP 5Silph Co.
- TM25ElectricThunderPower 120Accuracy 70%PP 10Kanto Power Plant
- After Blaine
- TM38FireFire BlastPower 120Accuracy 85%PP 5Prize for defeating Cinnabar Gym Leader Blaine
- After Giovanni
- TM47NormalExplosionPower 170Accuracy 100%PP 5Victory Road 3F
How to Get Grimer in Red & Blue
All eight wild Grimer encounters sit inside the Pokemon Mansion on Cinnabar, common throughout that one abandoned building. There is nowhere else in Kanto to find the sludge pile.
1 location to catch Grimer
Encountered via tall grass encounters
Badge 7Where To Catch Grimer in RB
Grimer is the chain's first catch. You'll find walking encounters from Lv. 30-42 across 16 total spots in the chain.
- Step 2Catch or Evolve into MukPokémon Mansion - 3FLv.38-40FloorBlueRate 15%Pokémon Mansion - B1FLv.40FloorBlueRate 10%Pokémon Mansion - 1FLv.37FloorBlueRate 4%Pokémon Mansion - 2FLv.39FloorBlueRate 4%or evolve from Grimer (Step 1)
To plan your throws, open the Red & Blue catch rate calculator with Grimer preloaded.
Grimer Weakness
Grimer is weak to Ground, Psychic, and Bug. Standard number of weaknesses for the Poison typing.
| Damage | Types |
|---|---|
| 2x (Weak) | Ground, Psychic, Bug |
| 0.5x (Resist) | Grass, Fighting, Poison |
- Only 15 types exist — Dark, Steel, and Fairy are absent
- Ghost has no effect on Psychic (a known bug, fixed in Gen II)
- Special stat governs both offense and defense — no Sp.Atk / Sp.Def split
What is Grimer Weak Against
VulnerableBest Pokemon Against Grimer
 Rhydon GroundRock | S | |
 Graveler RockGround | C | |
 Nidoking PoisonGround | C | |
Obtain MethodEvolve Nidorino (Celadon City Gift) | ||
 Hypno Psychic | C | |
 Nidoqueen PoisonGround | C | |
Obtain MethodEvolve Nidorina (Celadon City Gift) | ||
 Exeggutor GrassPsychic | S | |
 Kadabra Psychic | B | |
Available Moves Moves
Damage vs Grimer View Kadabra builds →Psychic 2x148-175%KO Dig 2x38-45% | ||
 Marowak Ground | C | |
 Starmie WaterPsychic | S | |
Obtain MethodEvolve Staryu (Route 19 Super Rod) | ||
 Parasect BugGrass | C | |
Available Moves Moves
Damage vs Grimer View Parasect builds →Dig 2x77-92% Leech Life 2x26-31% | ||
 Dugtrio Ground | B | |
 Slowbro WaterPsychic | B | |
Available Moves Moves
Damage vs Grimer View Slowbro builds →Psychic 2x127-150%KO Earthquake 2x65-77% | ||
 Onix RockGround | C | |
 Venomoth BugPoison | C | |
Available Moves Moves
Damage vs Grimer View Venomoth builds →Psychic 2x77-92% Leech Life 2x19-23% | ||
Grimer Evolutions
Grimer evolves into Muk, but can't breed. At 315 stats as a Poison type, evolution is the only path. Evolving adds up to 185 stat points total. View every chain in the Evolution Chart.
How to Evolve
RB Grimer Best Moveset
Poison pre-evolution where the typing offers nothing offensively. The stats can't back any role, and the moves run into the same wall of irrelevance. No path forward before Muk.
Best Build
Utility Moveset
- Harden
- Toxic
- Mimic
- Disable
Recommended Teammates
Moves List
TMs carry this one. Grimer learns Sludge naturally for STAB, but the offensive range comes almost entirely from technical machines. Normal and Fire and beyond give it real matchup play.
How to Read the Moves Table
Tabs
- Level-Up
- Learned by leveling up.
- TM
- Taught by a Technical Machine.
- Tutor
- NPC tutor (cost: items, BP, money).
- Reminder
- An NPC reteaches any move this Pokemon could have learned by leveling up.
- Transfer
- Carried over from an older game using Pokemon HOME.
- Event
- Given out through Mystery Gift events.
Visual Signals
CAT (Category)
How the move deals damage and which stats it uses.
A small dot on the icon's corner marks the move as contact.
Tier (S to D)
Each move's competitive rank in RankedBoost's system. TM and Tutor sort by tier by default (best first). On Level-Up, click the Tier header to do the same.
PWR (Power)
Base damage. Numbers shown in a type color include STAB (base × 1.5). Hover any colored number to see the math.
— means no power (status moves) or variable power.
Sorting & Filter
Click any column header to sort. Level-Up opens with Lv 1 at the top. TM and Tutor open with the highest-tier moves at the top.
Search filters by move name or type. The Filter button limits the list to STAB, Physical, Special, or Status moves.
Level-Up Moves
TM Moves
All 14 TMs are obtainable before the Elite Four
Tutor Moves
Base Stats
Appears in filthy areas. Thrives by sucking up polluted sludge that is pumped out of factories.
Grimer Red & Blue Guide
For Red & Blue, you can run Grimer through the first few routes without issues. 315 BST won't carry you far though. Get it to Muk as fast as you can.
Yes. Alolan Grimer is a regional variant with different typing and a reworked stat spread. Introduced in Gen 7. Plays completely differently from the original.
Game Availability
Since debuting in Red & Blue, Grimer has appeared in 19 titles over 9 generations. Along the way, it received an Alolan form in Generation 7, keeping it relevant across different competitive metas.
Click a game to view version-specific details
- Gen 1RBDebut
Red & Blue - Gen 1Y
Yellow - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3E
Emerald - Gen 3FRLG
FireRed & LeafGreen - Gen 4DP
Diamond & Pearl - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7SMAlolan
Sun & Moon - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7Let's Go
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 8PLA
Legends: Arceus - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves
Explore
Where to go next after Grimer.
Keep playing · Red & BlueRed & Blue Tier ListThe best Pokemon ranked tier by tierSee Red & Blue Tier List