The Gray Ghost
This next Easter egg is easy enough to just glance right past if you’re not looking out for it. In several areas of the game, such as Oracle’s Clocktower and Panessa Studios, the above poster is sprawled over random walls. It’s also one of the best examples of Rocksteady’s excellent knowledge on Batman and everything else DC.
This is a little reference to the Batman Animated Series episode “Beware the Gray Ghost.” Gray Ghost was a “fictional” superhero in the animated series who was also Bruce’s inspiration of Batman, to an extent. Gray Ghost is essentially an homage to the ’66 Batman and only exists in the animated/ Arkham/ Dini-verse.
In the above episode, Batman teams up with the Gray Ghost who is also kind of a superhero in real life. He too, was voiced by Adam West. Furthermore, in Batman Beyond, a villain named Inque infiltrates the Batcave. In order to disguise himself and fight her off, Bruce Wayne wears the mask of the Gray Ghost he has in the Batcave. Pretty cool historiography, Rocksteady.