Cornelius Stirk is a fictional character appearing in DC Comics. He is a cannibalistic supervillain with the ability to cause fear or hallucinations through telepathy and appears as a recurring adversary of Batman.

The Elizabeth Arkham Asylum for the Criminally Insane, commonly referred to as Arkham Asylum, is a fictional forensic psychiatric hospital appearing in American comic books published by DC Comics, commonly in stories featuring the superhero Batman. It first appeared in Batman #258, written by Dennis O'Neil with art by Irv Novick. Located in Gotham City, the asylum houses patients who are criminally insane, as well as select prisoners with unusual medical requirements that are beyond a conventional prison's ability to accommodate. Its high-profile patients are often members of Batman's rogues gallery.