Roman Sionis, a.k.a. Black Mask, is the first and only inmate to have escaped from Arkham City.
Using explosives stolen from the Penguin, he waited until the TYGER shift change, blasted his way through the containment wall, and went on the run in Gotham City.
Furious, Hugo Strange ordered his TYGER operatives onto the streets, to focus all their attention on finding Black Mask, who was finally recaptured after a violent siege at the meatpacking plant he owned.
Promising that no one else would ever escape again, Strange fitted a series of automated machine guns to the walls of Arkham City, designed to kill anyone else who dared to try.
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Gotham City Stories
FanfictionRipped straight from the files of the Arkhamverse including Batman Arkham Asylum, Batman Arkham City and Batman Arkham Knight but prominently the Gotham City Stories of Batman Arkham Knight. (Not a part of the #villainverse)
