- B-Team Sequel: Bruce Timm and Paul Dini had no involvement with this film.
- Executive Meddling: Because of how anti-heroic the Batwoman of the movie was behaving, DC insisted that the filmmakers not actually use Kathy Kane. That said, this didn't stop the writers from homaging her via Kathy Duquesne, nor did it stop them from making her one of the Batwomen.
- The Other Darrin: David Ogden Stiers replaced Paul Williams as the Penguin and Hector Elizondo replaced Henry Silva as Bane.
Trivia / Batman: Mystery of the Batwoman