Don't let the raw stats fool you. Thick Fat halves incoming Fire and Ice damage, and that completely changes the math for Grumpig. Only weak to Bug, Ghost, and Dark. Part of the Gen 3 roster.
Nothing fancy in Grumpig's spread. It leans special with Sp. Def out front. And you'll get 2 Sp. Def EVs per KO for it. Follows a fast 800K XP curve.
It can gain control over foes by doing odd dance steps. The black pearls on its forehead are precious gems.
Grumpig Weakness
VulnerableType-wise, Grumpig takes extra damage from Bug, Ghost, and Dark. Thick Fat reduces Fire/Ice damage, further improving the defensive spread. Grumpig's special bulk (base 110 Sp.Def) helps absorb special-type weaknesses, though physical moves exploit the lower Defense.
- Dark and Steel types added — Fairy does not exist yet
- Moves are Physical or Special based on type, not per move
Grumpig is what Spoink becomes. Breed it for Spoink eggs (average hatch time). A massive partner pool for breeding via one egg group. Eggs are average hatch time. The evolution from Spoink pushed Grumpig to 470 total stats. Defense saw the largest single gain at +30.
How to Evolve
Breed with Grumpig to get Spoink eggs easily using 102 partners from the Ground egg group. Notable egg moves include Extrasensory, Future Sight, Substitute and 1 more.
Find one free turn for Calm Mind and Grumpig can run through teams. Hasty nature leans fast mixed, Thickfat supports the sweep, and utility options stops anything from walling it cleanly.
Best Build
Best Grumpig Moveset
- Psychic
- Fire Punch
- Calm Mind
- Trick
Recommended Teammates
Breeding's the move. Extrasensory and Future Sight give Grumpig options it can't learn any other way, and coverage across 7 types already covers a decent range on top of Future Sight and Dream Eater. The egg moves push it further.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
No wild encounters for Grumpig in FireRed & LeafGreen. Bring Spoink over from Ruby, Emerald, or Scarlet, then level through the stages. Each step in the chain is laid out below.
How to Obtain Grumpig in FireRed & LeafGreen
Step 1Obtain SpoinkCatch in the wild in:
Then trade to FireRed & LeafGreen to continue the evolution chain.
Also found in:
Step 2Grumpig ✓
Grumpig looks average on paper at 470 BST. But Thick Fat is why it sees play — build around that and it pulls its weight. C-Tier on our tier list.
Grumpig's biggest threats include Heracross (Bug), Misdreavus (Ghost), and Houndoom (Dark), all carrying super-effective STAB moves.
Spoink evolves into Grumpig at level 32. Grumpig is the fully evolved form. It sits at 470 BST in its evolved form.
Grumpig gets Thick Fat, Own Tempo, and Gluttony. But Thick Fat is the one that matters — it's the centerpiece of every viable set. Build around that.
Grumpig is a special attacker with base 90 Sp. Atk. Enough bulk to take a hit or two, too. But the speed tells the real story — base 80 Speed is workable — faster than some, slower than many.
Grumpig appears in 15 games, including Ruby & Sapphire, FireRed & LeafGreen, and Emerald.
Debuting in Ruby & Sapphire, Grumpig appears in 15 games across 7 generations. A reliable presence in most mainline games, typically found through wild encounters.
- Gen IY
Yellow - Gen IRB

Red & Blue - Gen IIGS

Gold & Silver - Gen IIC
Crystal - Gen IIIRSDebut

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 VIISM

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