Untitled Arkham Asylum series is an upcoming American television series, based on the DC Comics location of the same name. The series will be a spin-off of The Batman. It will be the second television series set in The Batman Universe.
When revealing that the GCPD spin-off series was not moving forward in March 2022, Reeves explained that it had led to work on a new idea based on Arkham Asylum. He said the series would build upon Arkham's introduction in the film and explore the origins of different characters related to it. He envisioned a horror tone, with Arkham being depicted as a haunted house.