Every ability

Shell Armor

This Pokémon cannot be struck by a critical hit.

Standard ability
18
Pokémon
Hidden ability
7
Pokémon
Only in battle
1
Pokémon

Pokémon that can have it

26

Standard ability18Any one caught or hatched may have it

Hidden ability7Only one with its hidden ability has it

Only in battle1A forme it takes mid-battle, like a Mega Evolution