Midnight Dreamer

The Midnight Dreamer is a treasure that is unlocked when the player scans the Celeste amiibo from the Animal Crossing series. It looks just like the amiibo, and is worth.

Collecting the treasure
After scanning the amiibo on the area selection screen (in any sector), the treasure will appear in one of the Secret Spots of the area. Then, the player has to retrieve the Midnight Dreamer in that spot.

Trivia

 * Olimar's connection to the night sky in relation to this statue refers to Celeste's role in the Animal Crossing, where she runs the museum's observatory or encourages the player to look for shooting stars.
 * He also guesses this creature may "thrive in darkness", referring to how owls are nocturnal.