Generation V
Heavy Metal
Doubles the Pokémon’s weight.
Detailed Effect
This Pokémon has double the usual weight for its species.
Pokémon With Heavy Metal
10 canonical Pokémon forms can have this Ability.
Generation V
Doubles the Pokémon’s weight.
This Pokémon has double the usual weight for its species.
10 canonical Pokémon forms can have this Ability.
Duraludon 
Duraludon Gmax 
Aron 
Lairon 
Aggron 
Bronzor 
Bronzong 
Cufant 
Copperajah 
Copperajah Gmax