Answer:
The Joker embodies themes of chaos, anarchy and obsession: throughout the film, he expresses a desire to upset the social order in Gotham through crime, and defines himself by his conflict with Batman.
Explanation:
The Joker's main characteristic is his apparent insanity, although he is not described as having any particular psychological disorder. Like a psychopath, he lacks empathy, a conscience, and concern over right and wrong.
