This was the first on-screen appearance of the DC Comics western character Jonah Hex.
This was Elizabeth Montgomery's final television work before her death on 5/18/95 at the age of 62. This episode was first broadcast almost four months after her death.
When Ra's al Ghul's crewmen abandon the airship, their parachutes have a pyramid-like shape. This design comes from the notes of Leonardo Da Vinci. This implies that Ra's either studied the works of Leonardo or possibly knew him personally given his claim to Batman that he is 600 years old.
Sen. Patrick Leahy of Vermont voices the "Territorial Governor". Leahy is an avid fan of comic books in general, and Batman in particular. He has a cameo in the live-action film Batman Forever (1995), which was released three months prior to the initial airing of this episode, and also appears in Batman & Robin (1997), The Dark Knight (2008), The Dark Knight Rises (2012), and Batman v Superman: Dawn of Justice (2016). All royalties and fees from his roles are donated to charities, primarily the Kellogg-Hubbard library in Vermont where Leahy read comic books as a child.
Malcolm McDowell (Arkady Duvall) and David Warner (Ra's Al Ghul) both previously appeared in Time After Time (1979), in which they played H.G. Wells and John Leslie Stevenson / Jack the Ripper.