Ikaijin

A transdimensional being that watches over the events of World's End Club. They can communicate with Pochi, an X-TYPE, and assists him in the Go-Getters' adventures across Japan. They give subliminal instructions to the Go-Getters when they're in trouble, and they're able to travel through time and witness alternate histories, gathering clues and avoiding the Go-Getters' deaths.

The Otherworlder represents the Player in the story.