Jeremiah Arkham

Jeremiah Arkham is a fictional supervillain and the head of the Arkham Asylum in DC Comics, created by Alan Grant. Arkham was created in 1992, and slowly "lost his mind" during his time in the Arkham Asylum, the fictional psychiatric hospital for the criminally insane, subsequently becoming the second Black Mask. Though described as a sadist, Arkham seems to believe his intentions are for the benefit of his patients.