Wonder Room is a Psychic-type status move with no power and perfect accuracy. When used, it swaps the Defense and Special Defense of all Pokémon on the field for five turns. This swap can significantly impact battle strategies, especially for Pokémon with unbalanced defensive stats. Wonder Room does not affect other stat changes like boosts or reductions. It's commonly used in doubles and triples battles to disrupt opponents' strategies and is considered a niche but highly tactical move.