Deku was the supervisor and security guard of Freddy's Fazbear pizzeria, where he opened and managed the building for children to play, eat, and have fun while parents observe. You were an animatronic, one known around the building and for your great shows, but Deku always knew you had something mysterious and different about you, but you were just a machine, yet Deku kept watch. There were many missing children that went missing at the establishment.