The commentary track featured on the disc is, as usual for most Criterion commentaries, edited together from various sources. It would seem that director Paul Morrissey made a live commentary while watching the film, as did Udo Kier. Then, the commentaries were edited together under the narration of film historian Maurice Yacowar, who analyzes the movie as it goes along. Morrissey essentially discusses how he tried to make the film more funny than scary, and also offers insight into what he thinks qualifies as good direction and good acting. Udo Kier mostly focuses on his experiences working on the film and how he tried to take his role as Baron Frankenstein very seriously so that he would seem funnier in retrospect. As insightful as Maurice Yacowar's input is, to a certain extent he dissects the film way too much and manages to find vast amounts of symbolism and hidden meaning in almost every frame of the film.