10 Worst Things The Joker Has Ever Done On-Screen

10. Slaughtering Randall - Joker

Arthur kicks Joker (2019) off by suffering a needlessly cruel beatdown, seemingly defenceless against the attack. Feeling bad for the struggling clown, Randall hands him a mode of self defence for a city growing more violent than ever: a gun. He doesn't seem to expect much from Arthur in return, making us wonder if this questionable decision was genuinely committed out of kindness over anything sinister.

The gun winds up getting Arthur fired, and from there we have three possibilities:

First, Randall lied about Arthur to the boss in order to save himself from termination.

Second, Arthur hallucinated that his boss told him Randall badmouthed him (we know via his 'dates' with Sophie that Arthur is prone to hallucination).

Third, Arthur's hallucinations mean he actually did seek out Randall for a gun, but remembered it differently.

Due to being such an unreliable protagonist, we're never too sure of any event in Arthur's life. What we do know, however, is that Randall suffers a brutal, grisly death for his trouble. Stabbed to ruins in Arthur's living room, he then has his head bashed against a wall till he expires.

It's a bloodthirsty scene made worse by Joker scaring the wits out of the hapless witness Gary. We wonder if he'll send him to the grim reaper too but cooler heads prevail. After spending much of the film on the receiving end of punishment, Joker's feral outburst confirmed he had become the dastardly jester we love to hate.