Shellos is technically a pre-evolution of Gastrodon, but it holds its own in formats where Eviolite is allowed. Storm Drain redirects Water moves and boosts its Sp. Atk, adding extra value. Only weak to Electric and Grass.
Nothing fancy in Shellos's spread. It leans mixed with HP out front. And you'll get 1 HP EV per KO for it. Follows a medium-fast 1M XP curve.
Found in abundance on seashores bordering cold waters. When pressed upon, the Pokémon will secrete from its body’s surface a purple fluid that will stain one’s clothes.
Shellos Weakness
GoodType-wise, Shellos takes extra damage from Electric and Grass. The Water typing picks up 4 resistances to work with. Storm Drain grants an additional Water immunity, reshaping the matchup chart.
Shellos is the base form in a two-stage line leading to Gastrodon. Check the evolution method below. A decent partner pool for breeding via two egg groups. Eggs are average hatch time. Evolving adds up to 150 stat points total.
How to Evolve
Breed Shellos easily with 19 breeding partners from the Indeterminate and Water1 egg groups.
Don't let the NFE status fool you. Shellos with Eviolite hits bulk numbers that compete with final forms. Max Sp. Atk without Speed EVs and Hardy nature maximize that, and Stormdrain handles the rest. Recover patches up chip damage.
Best Build
Legends: Arceus uses different battle mechanics.
Competitive build content is not applicable for this game. Select a main series game for builds.
A compact toolkit overall. The offense runs through Hydro Pump and Water Pulse for Shellos, with Ground and Normal coverage and more doing what it can. Don't expect versatility from this one.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
A handful of locations for Shellos with decent spawn rates across mid-game routes. The sort toggle below swaps between best odds and earliest access, so you can approach it based on where you are in the game.
Best Locations
You can find Shellos through 4 walking encounters at walking. The list is sorted by game progression, so the earliest accessible spots show up first.
At 325 BST, Shellos is firmly in pre-evolution territory. Evolve it into Gastrodon before bringing it to any serious fight.
Shellos evolves into Gastrodon at level 30. Shellos is the base form of this evolutionary line.
Shellos gets Storm Drain, Sticky Hold, and Sand Force. But Storm Drain is the one that matters — it's the centerpiece of every viable set. Build around that.
Shellos is a mixed attacker — base 48 Attack and 57 Sp. Atk. But the speed tells the real story — base 34 Speed is low. Priority moves or Trick Room are the way to go.
Shellos appears in 13 games, including Platinum, HeartGold & SoulSilver, and Diamond & Pearl.
Debuting in Diamond & Pearl, Shellos appears in 13 games across 6 generations. A reliable presence in a solid number of games, typically found through catching or hatching as a base form.
- 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 IVDPDebut
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