Fan Casting Fable in The Commandos

An average insomniac, narcoleptic and illiterate janitor with a limited vocabulary working at an old library who curiously read a mysterious magical book that caused eleven literary monsters to be magically-grafted onto his mind and soul. Many of the characters inside of him argue over who gets to come out into the open and take control of Don's body, which ultimately lead him to being falsely deemed mentally unstable and send to an insane asylum. His sleep cycle had been improved, allowing him to have lucid dreams, as well as his vocabulary; mysteriously articulate and quoting famous literary lines every now and then. The inside of his mind is all the respective universes that his forms originate from all combined into one giant landscape; Wonderland, Hogwarts, Middle Earth, etc.