Justified
Dark hits raise Attack.
19 species 13 as main 6 as innate 4 battle AI weight, −2 to 10
In detail
Immune to Dark-type moves, and boost Attack by 1 stage when the user is hit by them.
Types that carry it
19 species Fighting 7 Water 4 Bug 3 Dark 2 Fire 2 Flying 2 Grass 2 Steel 2
As a main ability
13 speciesSelectable — one of up to three, and only one is active.
As an innate
6 speciesAlways on, alongside whichever main ability is chosen.