Justified

 is a Pokémon ability introduced in the fifth generation. It raises attack when hit by a Dark move.

Description
When a Pokémon with this ability is hit a Dark-type damaging attack, they will raise the Attack by one stage. There is no immunity granted to Dark-type moves though. If the Pokémon by a multi-hit Dark move, each hit activate this ability

Pokémon with Ability

 * Cobalion
 * Terrakion
 * Virizion
 * Keldeo

As a Hidden Ability

 * Growlithe
 * Arcanine
 * Absol
 * Lucario
 * Gallade