Heavy Metal

 is an Ability that doubles the user's weight.

Effect
The user's weight is doubled. This raises damage taken from Low Kick and Grass Knot, lowers damage taken from Heavy Slam and Heat Crash, along with raising damage the user does with Heavy Slam and Heat Crash.

Pokémon with

 * Aron
 * Lairon
 * Aggron
 * Bronzor
 * Bronzong
 * Cufant
 * Copperajah
 * Duraludon