Revealing mistake: There is a large painted hanging cloth backdrop of clouds in the mountain scenes near the end of the film. Vertical streaks can be seen in the backdrop that are the pleats in the fabric. These streaks really stand out in the restored versions of the film.
Revealing mistake: When Dr. Waldman gives the monster an injection and the Monster is trying to get the torch out of Henry Frankenstein's hands, if you look closely, Boris Karloff's (the Monster) make-up begins to smoke when he is hit by the torch. (00:37:35)
Answer: There seems to be no officially stated reason why the name was changed, but it's possible to theorise. There were numerous changes between the original book and the film. One theory is that these changes were to make the story more accessible to the mass audiences, and altering the name of the main character to a more common one could be seen as part of that. Another (possibly more likely) reason is down to alterations in the characters. Unlike the book, the film ultimately seeks to redeem Frankenstein's character, making him a more human and sympathetic character. Conversely, the character of Frankenstein's old friend, named Victor in the film, but Henry in the book, has been made a much less pleasant character. As Victor is quite a harsh, martial name and Henry comes across as rather more amiable, the filmmakers might well have decided that it would be more appropriate to the characters that they were trying to portray to switch the names round.
Tailkinker ★