Unnerve

 is a Pokémon ability introduced in the fifth generation. It prevents opponents from eating their own Berries.

Description
Pokémon with Unnerve prevents opposing P ok émon from eating their held Berries. In Generation VII, it gains the effect of causing wild P ok émon to call for help more often. It shares the effect with Intimidate and Pressure.

Pokémon with Ability

 * Joltik
 * Galvantula
 * Litleo
 * Pyroar

As a Hidden Ability

 * Ekans
 * Arbok
 * Meowth
 * Persian
 * Aerodactyl
 * Mewtwo
 * Ursaring
 * Houndour
 * Houndoom
 * Tyranitar
 * Masquerain
 * Vespiquen
 * Axew
 * Fraxure
 * Haxorus
 * Bewear