The Joker (2019): "What do you get when you cross a mentally ill loner with a society that abandons him and treats him like trash?!" To sum up, he, Arthur Fleck, or more commonly known around Gotham as The Joker, is a psychotic, murderous, mentally ill guy... Damn. And this is where you come in! While people are rioting, you decide to join in, because why the frizzle frazzle not? You can be anything you want to be, you can be a frickin doodlin turtle!