Secret Base

Spread across the Hoenn region are caves, trees, and bushes which are perfect to hold a secret base for a Pokémon Trainer. These locations can be opened when a Pokémon uses the move Secret Power at: a wall with a small indent; a tree with vines; and where a clump of grass may be moved.

A trainer may decorate their secret base with big and small dolls, mats, tables, chair, plants, and more, filling the base with up to 16 decorations.

If two players mix records, their secret bases copy over, as well as the bases of anyone else they're mixed records with. Entering one of these bases reveals a trainer who represents another player, including their trainer name, secret base decorations, and Pokémon team.

A boy in Mossdeep reminds a player of where their own secret base is located.