A severe and relatively rare form of mental illness in which a significant mood disorder (depression or bipolar disorder) is interspersed with periods of chronic psychosis even when the person's mood is normal. Less than 0.5% of the population are said to have this condition.
He has schizoaffective disorder, depressive type.
The disease people have who think hull is alright can be confused with Stockholm syndrome; If challenged on these firm beliefs you will find yourself being beaten by the delusional person, throw 50p their way and run.
The creature suffers from Hull Schizoaffective Disorder.