Monstropolis

Monstropolis is a world in Kingdom Hearts III. It is based on the Pixar film Monsters, Inc.. It is a city inhabited by monsters and powered by laughter energy provided by Monsters, Inc.

Story
Sora, Donald, and Goofy arrive outside the building, but are freaked out by each other's monster forms. Sora is confused by their new looks and is further puzzled when they read the sentence "We Scare Because We Care". The trio walks into the building where they see two creatures with a child and Sora thinks that they're scaring her, but changes his mind after seeing her happy. Boo, Mike, and Sulley introduce themselves with Boo mistaking Donald for Mike Wazowski. Introductions are cut short when the Unversed appear, creatures that Sora has never seen before. Sulley and Mike get Boo to safety and decide to help the trio fend off the new legion.

Characters

 * Maintenance are mentioned by Sulley.
 * Trailer Son and Mom do not appear in the game physically, but are heard.

Character Design
Sora, Donald and Goofy turn into monsters when they visit the world.