Batman: Arkham Asylum - 10 Coolest Easter Eggs, Secrets And References Explained

9. The Injustice Gang Strikes Again

Batman Arkham Asylum Harley Quinn Injustice Gang
Rocksteady

One of the best locations for easter eggs in Arkham Asylum is Harley Quinn's old office. Of course, Quinn herself had once been a psychologist at the facility before she fell for the Joker, and her infatuation with the Clown Prince is clear for all to see once you enter.

Also cool to note is that the various tapes relating to Harley in Asylum serve as a neat adaptation of Paul Dini and Bruce Timm's Mad Love comic, which told the character's origin. The comic was adapted into an episode of The New Batman Adventures, which means Arleen Sorkin (the voice behind Harley Quinn) has technically starred in two adaptations of that particular story.

For all that the Harley room offers loads of cool insight into her origins - including her famous jester hat - there's another secret in the room that instantly made the Arkhamverse feel SO much bigger than it initially seemed. Take a look at the various newspaper printouts that adorn Quinn's wall, and you can spot a couple of references to the Injustice Gang, the second most famous DC supervillain team (the first being the Legion of Doom, duh).

Rocksteady would amp up their Justice League-related teases in both Arkham City and Knight, but only time will tell if they'll be the stars of the studio's next project...

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WhatCulture's very own resident movie guy, Ewan has been working in the content creation biz for over 10 years now, having started as a freelance contributor to WhatCulture Gaming all the way back in 2015. After graduating with a First-Class Honours in History from Northumbria University in 2017 (where he won a prize for a totally killer dissertation on the Watergate years), Ewan took on the role of Comics Editor at WhatCulture and quickly developed WhatCulture Comics into one of the biggest superhero-focused channels on YouTube. He followed this with a brief hiatus at Screen Rant in 2021, where he worked across the Gaming and Film sections as a writer and editor, before returning to WhatCulture as a Senior Content Producer / Presenter in 2023. He started his own podcast, We Love Dad Movies, in 2022, and has contributed several written pieces to the Eisner-nominated comics website Shelfdust as well. In his current role, Ewan incorporates his love of cinema, comic books, and history into written pieces and video essays for WhatCulture's Film & TV channel, as well as WhatCulture Gaming and WhatCulture Horror, with a particular focus on nineties-era Dad Movies, old school Westerns, and Golden Age Hollywood Noir. John Carpenter is his fave, and he thinks Batman Beyond should never have been cancelled. If that's your vibe, you'll probably like his stuff.