While most trainers evolve Sliggoo into Goodra immediately, the unevolved form has a niche with Eviolite boosting its defenses. Only weak to Ice, Dragon, and Fairy. Can go either physical or special depending on the set. Been around since Gen 6.
Sliggoo's spread isn't flashy. Sp. Def leads, Defense trails, 2 stats clear the bar. Tough to catch and worth 2 Sp. Def EVs, on a slow 1.25M XP grind.
A creature given to melancholy. I suspect its metallic shell developed as a result of the mucus on its skin reacting with the iron in Hisui’s water.
Sliggoo Weakness
AvgIce, Dragon, and Fairy-type moves hit Sliggoo for super-effective damage. It resists 4 types, giving it decent defensive coverage. Sap Sipper grants an additional Grass immunity, reshaping the matchup chart. Sliggoo's special bulk (base 113 Sp.Def) helps absorb special-type weaknesses, though physical moves exploit the lower Defense.
Sliggoo is the middle stage between Goomy and Goodra. It's a three-stage line with one more evolution to go. For breeding, takes forever to hatch with a small partner pool via one egg group. So far, Sp.Def got the biggest boost (+38 from Goomy). The final form adds another 148 stats on top.
How to Evolve
Best Build
Legends: Arceus uses different battle mechanics.
Competitive build content is not applicable for this game. Select a main series game for builds.
Sliggoo's movepool balances level-up moves with TM options. Consistent STAB comes from Draco Meteor and Outrage, and Water and Poison coverage and more keeps opponents from switching in for free. No major gaps here.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Sliggoo appears at decent spawn rates across 2 spots in mid-game routes. Sort by Best below if you want the highest rate, or Earliest if you want the quickest access point in your playthrough.
Where To Catch Sliggoo in Legends: Arceus
Goomy is your first catch on the way to Sliggoo. You'll find walking encounters from walking across 4 total spots in the chain.
Step 1Catch GoomyEASYAncient QuarryGrassUncommonRuinsEASYHolm of TrialsGrassUncommon
Step 2Sliggoo ✓EASYAncient QuarryGrassUncommonRuinsEASYHolm of TrialsGrassUncommonor evolve from Goomy (Step 1)
Sliggoo isn't fully evolved, so it's not built for competitive play. You'll want to evolve it into Goodra to unlock its full potential. At 452 BST, it's a stepping stone rather than a team anchor.
Run Sap Sipper on Sliggoo. It's the ability that defines how you build around it and the main reason it holds a competitive niche. Sliggoo also gets Hydration and Gooey, but they don't compare.
Sliggoo fills the balanced role. It's a mixed attacker — base 75 Attack and 83 Sp. Atk. At base 60 Speed, it won't be moving first often. And it's enough bulk to take a hit or two.
Sliggoo appears in 8 games, including X & Y, Omega Ruby & Alpha Sapphire, and Ultra Sun & Ultra Moon.
Sliggoo first appeared in X & Y and spans 8 games across 4 generations. It later gained a Hisuian form in Generation 8, adding new dimensions to its competitive identity.
- Gen IY
Yellow - Gen IRB

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 VIXYDebut

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 VIIIPLAHisuian
Legends: Arceus - Gen VIIIBDSP

Brilliant Diamond & Shining Pearl - Gen IXSV

Scarlet & Violet - Gen IXLZA
Legends: Z-A