That seems pretty conclusive to us, which points towards Joaquin Phoenix's failed comedian Arthur being a genuine murderer and not just a delusional Arkham Asylum patient.

A similar poll last month posed the question: "Is Arthur actually Bruce Wayne's half-brother?" And yes, the majority of you also thought that Joker and Batman are related after all.

Could Robert Pattinson's forthcoming DC movie The Batman see Bruce referencing a troubled half-sibling? Sadly for some, it doesn't look like the two films will be that closely connected...