Grimer sits at the start of its evolution line — not yet at full power, but that changes fast. Most trainers push through to Muk as fast as possible. Only weak to Ground and Psychic. Known as the Sludge Pokemon.
HP and Attack carry most of Grimer's stat budget. Speed's the obvious dump stat. Common in the wild and yields 1 HP EV. Follows a medium-fast 1M XP curve.
Sludge exposed to X rays from the moon transformed into GRIMER. It loves feeding on filthy things.
Appears in filthy areas. It thrives by sucking up polluted sludge that is pumped out of factories.
Grimer Weakness
AvgGrimer is weak to Ground and Psychic-type moves. 4 resistances help offset the weaknesses. Just 2 weak spots to worry about, which keeps teambuilding straightforward.
- Dark and Steel types added — Fairy does not exist yet
- Moves are Physical or Special based on type, not per move
One evolution ahead. Grimer grows into Muk through a straightforward two-stage chain. A decent partner pool for breeding via one egg group. Eggs are average hatch time. Evolving adds up to 175 stat points total.
How to Evolve
Breed Grimer easily with 22 breeding partners from the Indeterminate egg group. Pass egg moves like Curse, Explosion, Haze and 4 more to offspring.
Best Build
No build content available for this Pokemon in Gen 3.
Try selecting a different game/generation filter, or check back later.
Breeding opens up real options for Grimer. Curse and Explosion come exclusively from egg moves, and they're worth the effort. The rest of the kit covers basics through Sludge Bomb and Sludge and coverage across 8 types.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
6 encounter spots for Grimer at high spawn rates starting from mid-game routes. Two different catch methods are in play here. Best and Earliest sort options below help narrow down your approach based on odds vs. Accessibility.
Best Locations
Before you go hunting for Grimer, check which of the 6 spots belong to your version. LeafGreen and FireRed each have different walking and fishing encounters at Lv. 28-40.
Grimer is meant to evolve into Muk. At 325 BST, the stats aren't there for competitive play yet. Pre-evolution Pokemon rarely hold up against fully evolved threats.
Grimer can evolve into Muk and Alolan Muk depending on the method. Grimer is the base form in a 3-stage evolutionary line.
Stench is the go-to ability for Grimer. It has a 10% chance of making target Pokémon flinch with each hit. Its hidden ability Poison Touch can work in specific setups. Sticky Hold is the other option — pick based on what your team needs.
Base 25 Speed is low. Priority moves or Trick Room are the way to go. On offense, Grimer is a physical attacker with base 80 Attack. Best used as a trick room.
Grimer appears in 19 games, including Yellow, Red & Blue, and Gold & Silver.
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.
- Gen IY
Yellow - Gen IRBDebut
Red & Blue - Gen IIGS
Gold & Silver - Gen IIC
Crystal - Gen IIIRS
Ruby & Sapphire - Gen IIIFRLG
FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS
HeartGold & SoulSilver - Gen IVDP
Diamond & Pearl - Gen VBW
Black & White - Gen VB2W2
Black 2 & White 2 - Gen VIXY
X & Y - Gen VIORAS
Omega Ruby & Alpha Sapphire - Gen VIIUSUM
Ultra Sun & Ultra Moon - Gen VIISMAlolan
Sun & Moon - Gen VIILGPE
Let's Go Pikachu & Eevee - Gen VIIISwSh
Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP
Brilliant Diamond & Shining Pearl - Gen IXSV
Scarlet & Violet - Gen IXLZA
Legends: Z-A