- Actor Allusion: "What the hell am I gonna feed him at this hour?"
- Casting Gag: The speaker for the jury in Waxwork II is played by Stanley Sheff, who directed this film's director Anthony Hickox in Lobster Man from Mars a few years earlier. A clip can be seen playing on the TV in the Brightman household when Sarah returns home at the start of the film.
- The Danza: David Warner as David Lincoln
- Name's the Same: Sarah's last name happens to be Brightman.
- Shown Their Work: In the Frankenstein sequence in Waxwork II, the Doctor has an Igor, but like in the Universal film adaptation, his name is Fritz, not Igor.
- The Other Darrin: Sarah is played by Deborah Foreman in Waxwork and Monika Schnarre in Waxwork II. Particularly noticeable because Waxwork II replays some footage of the first movie's climax.
- What Could Have Been: Original script for the first film had Jason Voorhees and the children from Village of the Damned (1960) among the exhibits.
