In The Texas Chainsaw Massacre, Leatherface is a chainsaw-wielding, psychopathic murder who has a taste for human flesh. He and his inbred family hunt down victims and turn them into practical items like housebuilding materials and meat for BBQ and chili. Probably the scariest thing about Leatherface is that the fact that he was inspired by real life killer Ed Gein, who wore a mask of human skin.
October 9, 2013 by Amy
In Saw, John Kramer is a civil engineer dying from an inoperable brain tumor who decides to help others appreciate the value of life. Instead of giving them a pep talk however, he builds complex torture devices that they can only escape through self-sacrifice. Typical engineer.
October 26, 2016 by Real Human Bean
Dr. Decker is the slasher villain of the cult classic fantasy/horror film Nightbreed (played by legendary horror director David Cronenberg) and the novel Cabal by Clive Barker of Hellraiser and Candyman fame. He is a serial killer psychologist who convinces his patients that they are serial killers before reporting them to the police and having them killed.