The eponymous Killer Klowns have especially grotesque faces. But this overweens given that a usual clown is terrifying to so many. Clowns rest neatly in the uncanny valley between human and cartoon. Killer Klowns tell truth about the edges of human nature and the roots of the comic in horror.
Oh, the special effects are charming. And one scene is genuinely scary.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko