The Ghost in Gray for Batman: Arkham Knight - PC

• The Ghost in Gray

In several areas of the game like Oracle's Clock Tower and Panessa Studios, posters can be seen for The Gray Ghost. This is a reference to the Batman Animated Series episode "Beware the Gray Ghost," where Batman must solve a crime spree reminiscent of an old TV show who's main hero (voiced by Adam West) operated much like Batman.

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