Shell Armor

Shell Armor prevents the Pokémon from receiving a critical hit.

Game descriptions

Ruby, Sapphire, FireRed, LeafGreen, Emerald:Blocks critical hits.
Diamond, Pearl, Platinum, HeartGold, SoulSilver:The Pokémon is protected against critical hits.
Black, White, Black 2, White 2:The Pokémon is protected against critical hits.
X, Y, O.Ruby, A.Sapphire:Protects the Pokémon from critical hits.
Sun, Moon, Ultra Sun, Ultra Moon:A hard shell protects the Pokémon from critical hits.
Sword, Shield, B.Diamond, S.Pearl:A hard shell protects the Pokémon from critical hits.
Scarlet, Violet:A hard shell protects the Pokémon from critical hits.