Shell Armor prevents Pokémon from receiving a critical hit, even if they would usually always land one such as with Frost Breath, Storm Throw or with Merciless (If the user is poisoned).
Outside of battle
Shell Armor has no effect outside of battle.
Pokemon with Shell Armor
|Pokémon||Types||First Ability||Second Ability||Hidden Ability|
|Sandugg||Bug||Ground||Shell Armor||Sand Veil||Sand Stream|
|Cassand||Bug||Ground||Shell Armor||Sand Veil||Sand Stream|
|Tortarock||Rock||Ground||Dry Skin||None||Shell Armor|
|Bouldoise||Rock||Ground||Dry Skin||None||Shell Armor|
|Mossnail||Bug||Rock||Sap Sipper||Overcoat||Shell Armor|
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