Michael Myers, the quintessential serial killer, first appeared in the original Halloween film in 1978 by John Carpenter and subsequentially became people’s worst nightmare. According to Esquire, Carpenter got the inspiration from visiting a mental institution while in college. It was there that he would find the empty cold, calculated stare from a 12-year-old boy, a boy with the eyes of pure evil!
Freddy Krueger, the serial killer that stalked teenagers in their dreams, was first introduced in A Nightmare on Elm Street in 1984 by Wes Craven. His burned face, striped red shirt, and gloved razors cemented him as a horror movie classic. Craven states that he got the inspiration from an L.A. Times article about a boy who died in his dreams. His problems started when he moved with his family to the U.S. from Cambodia. Having nightmares, the boy was always afraid that something was out to get him in his sleep. Although he tried to stay awake for days, he finally gave in. His parents last heard his screams before he was found dead, reports USA Today.