Statues are used to decorate the Plaza, often the outer edges of the platform. They are only accessible if the player owns or uses other Kirby products, specifically amiibo. When Kirby enters the amiibo door, the player is prompted to tap a figure on the Touch Screen, which unlocks a statue based on the tapped amiibo. Statues change the background music as well.
If the player scans an amiibo that already has a statue, the music will simply change, with the game giving the player a message saying "This amiibo has already been used. Only the music will be changed."
Using an amiibo that is not compatible will read "This amiibo is not supported."