Arkham Asylum Inmates

    Team » Arkham Asylum Inmates appears in 578 issues.

    The inmates of Arkham are deemed too insane and dangerous for regular prisons. Although usually at each other's throats, the inmates will occasionally band together to take on their greatest foe - Batman.

    Short summary describing this team.

    Arkham Asylum Inmates last edited by stunninggirl99 on 04/16/24 03:55AM View full history

    Some of Batman's most dangerous foes are sent to Arkham Asylum after being declared not mentally fit to stand trial. The inmates have been known to occasionally take over the Asylum and team up in order to defeat the Batman.

    Most Notable Inmates


    Possibly Batman's strongest foe, Bane has been incarcerated in both Blackgate Penitentiary and Arkham. During Bane's first attack against Batman, Bane made the Dark Knight face a gauntlet of his greatest foes from the Asylum.

    Black Mask

    Both criminals with the moniker of the Black Mask have been committed to Arkham, Roman Sionis and Jeremiah Arkham, the latter formerly being the director of the Asylum.


    Most of the villains using the alias of Clayface have been inmates of the Asylum, including the most notable four - Basil Karlo, Matt Hagen, Preston Payne, Sondra Fuller and Cassius Payne.

    Harley Quinn

    Harleen Quinzel was formerly a Psychiatrist at Arkham who was appointed to Joker which led to her corruption and transformation into the villain, Harley Quinn.

    Hugo Strange

    Hugo Strange is often depicted as an Arkham Asylum Staff member with him sometimes being director of the Asylum before he went into his criminal ways.


    Arguably Arkham's longest residing resident, Joker usually takes the lead when orchestrating take overs of the Asylum. The Asylum was originally built purely to hold two inmates - Joker and Two-Face.

    Killer Croc

    Killer Croc is one of Arkham's most dangerous inmates with him being kept under maximum security. Croc is also notable for biting the hand of Aaron Cash, a corrections officer in Arkham.

    Mad Hatter

    Mad Hatter is essential for the times when the inmates take over the Asylum as he utilises his mind-control technology to subdue the guards.


    Man-Bat is an occasional ally of Batman, but is most often kept in Arkham.

    Mr. Freeze

    Mr. Freeze is actually sane but is kept in Arkham Asylum as no other prisons hold the facilities needed to keep Freeze alive.


    Penguin, like Mr. Freeze, has been shown to actually be sane and has spent time in Blackgate Penitentiary as well as Arkham. However, Penguin is usually committed to the Asylum anyway.

    Poison Ivy

    Possibly Arkham's most powerful inmate, Poison Ivy is usually kept under high-security.


    Riddler is arguably Arkham's smartest inmate and has been shown to know all the possible ways to escape his cell.


    One of the Asylum's deadliest residents, Scarecrow has been known to previously be a doctor at the Asylum.


    One of Arkham's most tragic inmates, Arkham Asylum was originally built to only hold two-Face and Joker.


    This edit will also create new pages on Comic Vine for:

    Beware, you are proposing to add brand new pages to the wiki along with your edits. Make sure this is what you intended. This will likely increase the time it takes for your changes to go live.

    Comment and Save

    Until you earn 1000 points all your submissions need to be vetted by other Comic Vine users. This process takes no more than a few hours and we'll send you an email once approved.