Stats & Training
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.
Its shape and coloration vary, depending on its habitat.
Its shape and coloration vary, depending on its habitat.
Shellos Weakness
Type-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.
| Damage | Types |
|---|---|
| 2x (Weak) | Electric, Grass |
| 0.5x (Resist) | Fire, Water, Ice, Steel |
- Fairy type does not exist — Dragon has fewer checks
- Physical / Special split now per-move (introduced Gen IV)
In HeartGold & SoulSilver, Magnezone can KO Shellos with Thunderbolt (149-175%). Rotom's Thunderbolt also KOs at 120-141%.
 Magnezone ElectricSteel | B | |
Recommended Build AbilityMagnetpull ItemLeftovers NatureTimid Moves
Damage vs Shellos View Magnezone builds →Thunderbolt 2x149-175%KO Explosion73-86% | ||
 Roserade GrassPoison | B | |
Recommended Build AbilityNatural Cure ItemBlack Sludge NatureTimid Moves View Roserade builds →
| ||
 Rotom ElectricGhost | C | |
Recommended Build AbilityLevitate ItemChoice Scarf NatureTimid Moves
Damage vs Shellos View Rotom builds →Thunderbolt 2x120-141%KO Shadow Ball53-63% | ||
HeartGold & SoulSilver Evolution
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. View every chain in the Evolution Chart.
How to Evolve
Breeding
Breed Shellos easily with 31 breeding partners from the Indeterminate and Water1 egg groups. Pass egg moves like Amnesia, Counter, Curse and 9 more to offspring.
HeartGold & SoulSilver Shellos Best Moveset
Best Build
No build content available for this Pokemon in Gen 4.
Try selecting a different game/generation filter, or check back later.
Moves
Breeding's the move. Amnesia and Counter give Shellos options it can't learn any other way, and coverage across 7 types already covers a decent range on top of Muddy Water and Surf. The egg moves push it further.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
How to Get Shellos in HeartGold & SoulSilver
Shellos can't be caught in HeartGold & SoulSilver. Bring it over from Diamond, Platinum, or Sword instead. The encounter info below covers the source games.
Shellos is not available as a wild encounter in this game.
Catch in the wild in:
Then trade to HeartGold & SoulSilver.
Also found in:
Shellos Guide
Shellos evolves into Gastrodon at level 30. One evolution, no branching. Solid jump from 325 BST.
Shellos evolves into Gastrodon at level 30. Takes some grinding. Plan your team around the mid-game wait.
In HeartGold & SoulSilver, For a casual playthrough, Shellos works as a placeholder. Water coverage is useful early. The real payoff is Gastrodon. That's where the stats start mattering.
Shellos is catchable in HeartGold & SoulSilver. Check the Locations section above for specific routes, encounter rates, and methods. It also appears in 12 other games across the series.
Game Availability
Debuting in Diamond & Pearl, Shellos appears in 13 games across 7 generations. A reliable presence in a solid number of games, typically found through catching or hatching as a base form.
Click a game to view version-specific details
- Gen 1Y
Yellow - Gen 1RB
Red & Blue - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3FRLG
FireRed & LeafGreen - Gen 3E
Emerald - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 4DPDebut
Diamond & Pearl - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7SM
Sun & Moon - Gen 7LGPE
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8PLA
Legends: Arceus - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves