Rivalry
The Pokémon's competitive spirit makes it deal more damage to Pokémon of the same gender, but less damage to Pokémon of the opposite gender.
Pokémon with this ability8 Pokémon
FAQ
What does Rivalry do?
The Pokémon's competitive spirit makes it deal more damage to Pokémon of the same gender, but less damage to Pokémon of the opposite gender.
Which Pokémon have Rivalry?
8 Pokémon have it, e.g. Shinx, Luxio, Luxray, Axew, Fraxure, Haxorus, Litleo, Pyroar.