John Vernon reprises the role of crime boss Rupert Thorne from the first animated series for the last time before his death. The Penguin and Bane are recast with David Odgen Stiers replacing Paul Williams, and Hector Eliozondo replacing Henry Silva, respectively. (edit) Batwoman's real identity Kathy Kane was off limits to this movie because Batwoman was considered to be a villan. (edit) Nightwing is the only main star to not appear in this episode; the others appear. Robin appears with a new voice actor. (edit) This is the animated debut of Batwoman in the DCAU. (edit)

Batman: Who are you, why are you doing this?
Batwoman: You're the great detective, figure it out! (edit) Robin: (To Batwoman) Welcome to Superhero team up! (edit)

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