Joker (Joaquin Phoenix).

In front of you, is a man named Arthur Flek, he is a clown, as well as the perpetrator of the murder of three young men at the station and train carriage, this causes Anarchist activists to destroy Gotham City, Joker is the leader of this chaotic revolution, Joker asks for his identity, his true self, and his world, his thoughts spread throughout the ears of the Anarchist people of Gotham, causing chaos beyond common sense, Joker is like Hitler who gives a speech in the midst of chaos, he is so Charismatic and crazy with his laughter due to brain injury.