Ray mentions that the Ghostbusters hadn't encountered vampires before this episode, which is incorrect for they did deal with vampires in the earlier episode "No One Comes to Lupusville."
Person in village: Vliafranz, you sound like someone from a cheap animated t.v. show.
Peter: It's times like this that I wish I'd listened to what my dad used to tell me.
Winston: Yeah? What was that?
Peter: I don't know. I never listened.
The voices of the young couple running away from the giant bats are played by Kath Soucie (the new Janine) and Frank Welker (Ray/Slimer)
Janine still has her original appearance but has a new voice (Laura Summer to Kath Soucie), but changes to her appearance wait in "Baby Spookums" while Peter's new voice is never explained.