To Speak or Not to Speak
One very creepy character from the film is The Thin Man, who is played by Crispin Glover. One of the creepiest elements of this character is he doesn’t speak; originally this was a speaking role, but Glover didn’t like the lines, so he asked for them to be removed.
The director and producer agreed to make it a non-speaking role to give the character a more mysterious feel—Glover even came up with many of his character’s eccentric traits, such as ripping off women’s hair, sniffing it and then screaming. This decision to give Glover a lot of say in the role obviously made such an impact on how the character translated to film.