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,[1] and slowly "lost his mind" during his time in the Arkham Asylum, subsequently becoming the second Black Mask.[2] Though described as a sadist,[3][4] Arkham seems to believe his intentions are for the benefit of his patients.[5]