Cartoons from the first half of the 20th century are creepy for a lot of reasons. For one, many of the lead animators in the early days of film had dark senses of humor. In addition, while cartoons came to be associated with kids in the age of television, these early animators weren't necessarily making films that were family-friendly.
Source：https://www.cbr.com/creepiest-old-cartoons-like-horror-movies/
