The psychopathology Arthur exhibits is unclear, preventing diagnosis of psychotic disorder or schizophrenia; the unusual combination of symptoms suggests a complex mix of features of certain personality traits, namely psychopathy and narcissism (he meets DSM-5 criteria for narcissistic personality disorder).

Phillips confirmed a “Joker” sequel in June 2022 with an Instagram post teasing the title. The film is set to be released October 4, 2024 from Warner Bros. Keep scrolling to see all the details on “Joker 2.”

The Joker's age changes depending on the version of the character – for example, in Batman: The Animated Series, he's 44 years old, but in some stories in the comics, he has been portrayed as being in his late 50's, so it's not surprising that the movie went for a younger portrayal.