Monstropolis

Monstropolis is a world in Kingdom Hearts III. It is based on the Pixar film Monsters, Inc., and is the only world in the game apart from the Keyblade Graveyard where the Unversed can be found.

Story
Sora, Donald, and Goofy arrive outside the building but are freaked out by each others monster forms. Sora is confused by their new looks and is more 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 unfamiliar enemies appear that Sora has never seen before. Sulley and Mike get Boo to safety and decides to help the trio fend off the new legion.

Characters

 * Needleman and Smitty are mentioned by Sulley as the Maintenance.

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