Kilson was a former inmate of Arkham Asylum and henchman of the Joker who was used to free Lau from the Major Crimes Unit jail.


Kilson was a delusional criminal who imagined hearing voices and for a time was incarcerated in Arkham Asylum. At some point after his escape in Arkham mass breakout that occured during Ra's al Ghul's and the Scarecrow's reign of fear, the Joker found him and offered to remove the voices, "replacing them with bright lights, like Christmas", which in reality, was the Joker making arrangements for Kilson to have a pre-planted cell phone-activated surgically implanted just under the skin on Kilson's abdomen.

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