Frisk allows the Pokémon to see the opponent's held item upon entering battle. If the foe is holding an item, a message identifying the item will be shown right after the Pokémon with Frisk enters the battle. If the foe is not holding an item, no message will appear.
In a Double or Triple Battle, an unidentified opponent is randomly chosen and their held item revealed. The item revealed may be from a non-adjacent opponent.
Frisk now identifies the held items of all opposing Pokémon, regardless of position.