In Batman: Arkham City (2011), you can find Harley Quinn's outfit from Batman: Arkham Asylum (2009) in Joker's Fun House, complete with Warden Sharp's ID tag. : r/GamingDetails
Harley Quinn Hot Toys VGM41 Batman Arkham Knight
Batman Arkham Knight Harley Quinn Poster 61x91,5cm | Yourdecoration.com