Michael Myers

Michael Myers is a fictional character from the Halloween slasher movie series. 
 He first appears on Halloween (1978) as a 6-year-old boy who murders his older sister and then, fifteen years later, returns home to murder his younger sister. In the original Halloween, the adult Michael Myers, known as The Way in closing credits, was played by Nick Castle for most of the film, with Tony Moran and Tommy Lee Wallace in the substitution during the last scene. It was created by Debra Hill and John Carpenter. Michael Myers has appeared in 9 movies, as well as in a novel, a video game and several comic books. In 2007, the filmmaker and musician Rob Zombie takes up the film series with remakes.
The character has gone through three different versions or continuities. In the original version of Carpenter and Hill is a psychopathic killer by nature without there being a rational explanation behind his actions beyond what seems to be an intrinsic evil, as described by Dr. Loomis played by Donald Pleasence.