These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Badass Decay: The creature goes from being intelligent enough to learn how to read and speak on his own, as well as framing someone for murder in the book, to almost completely mindless brute.
I Am Not Shazam: The name of the hunchbacked assistant is not Igor, it's Fritz. Ygor is an unrelated character from the third and fourth movies, who had a broken neck and didn't really assist the Doctor (he's the main antagonist in fact).
Narm: When the Monster confronts Henry's fiancee. While the scene is still fairly chilling and unnerving even by todays standards, right as she discovers the Monster behind her and screams for her life, the Monster lets out a snarl that... well, let's just say it gives the scene a healthy dose of unintended hilarity.