Considering many of Batman’s Enemies go to Arkham Asylum(where Psychoanalysis is common) let’s look into their and Batman’s Personality and Mental Disorders:
First the Paranoids:
Batman: Clearly suffers from Insular Paranoid Personality Disorder though in the main Comics his disorder is not so severe that he doesn’t trust friends.
Joe Chill: Also suffers from Insular Paranoid Personality Disorder in that he secludes himself and fears that Bruce Wayne is after him(when he does come after him he takes advantage of his Paranoia to get Joe Chill killed by the other criminals).
Scarecrow: Suffers from Malignant Paranoid Personality Disorder. His inferiority complex and obsession with Fear(believing the whole world runs on it) makes him dangerous and since he cares little about public opinion(aside from making them afraid) unlike the Narcissists he is that much more dangerous.
Poison Ivy: Also suffers from Malignant Paranoid Personality Disorder.
Riddler: Suffers from OCD and Fanatic Paranoid Personality Disorder I.E grandiose delusions that are irrational and flimsy; pretentious, expensive supercilious contempt and arrogance toward others; lost pride re-established with extravagant claims and fantasies… Yes he has it.
Now the Borderlines(who have a shrunken hyperactive Amygdala like a OCD sufferer which can comorbid):
Two-Face: Suffers from both Multiple Personality Disorder, OCD and Borderline Personality Disorder. Borderlines need 5 traits for a diagnosis and he has them: Personality disassociation, black-and-white splitting, mood swings, alternating between extreme idealization and devaluation, and frequent outbursts of inappropriate anger.
Cartoon Terra: Suffers from Impulsive Borderline Personality Disorder I.E. Borderline Personality Disorder with Sociopathic/Psychopathic/Histrionic traits.
Cartoon Raven: Suffers from Petulant Borderline Personality Disorder(is more moody, passive aggressive, etc. than a normal Borderline) and Supernatural Empathy(which means she can properly Empathize despite having BPD).
Next the Histrionics(Histrionics if the Genetic Markers and shared diagnoses are any indication are a type of Psychopath):
Harley Quinn: Suffers from Appeasing Histrionic Personality Disorder. She desperately craves the Joker’s attention.
Penguin: Suffers from Theatrical Histrionic Personality Disorder.
Next the Narcissists:
Comic and Cartoon Joker: Suffers from Malignant Narcissism I.E Narcissism with Anti-Social and Sadistic traits(though he obviously doesn’t have enough to be a Sadist, Psychopath or Sociopath). He is shown to fear resourceful Psychopaths/Acquired Sociopaths.
Arkham-verse Joker: Suffers from Prion Disease-induced Hallucinatory Psychosis(someone in Gotham clearly turned the amazing Green Cow into Burgers when it caught the Mad Cow Disease) and Malignant Narcissism.
Next the Anti-Socials(Psychopaths and Sociopaths):
Dark Knight Trilogy Joker: Suffers from Psychopathy(Comic Joker would be afraid of this guy for the same reason he is afraid of The Batman who Laughs).
Cartoon Slade: Suffers from Psychopathy.
The Batman who Laughs: Suffers from Acquired Sociopathy(only differs from a Psychopath in that he caught it after birth during adulthood)
Comic Terra: Suffers from Sociopathy(too explosive to be a Psychopath since she lacks Borderline Personality Disorder, Histrionic Personality Disorder or OCD)…
Many of the initial diagnoses were taken from psychoanalysis from other sites including from Psychologists. The subtype diagnoses of course were from me looking at the subtypes for each character’s diagnosed Personality Disorder to see which one fitted(didn’t need to in Batman and the Joker’s cases since their subtypes were found in their diagnoses).
Anyone agree with the diagnoses?