 Michael Myers is a character from the Halloween series of slasher films . He first appears in John Carpenter 's Halloween ( 1978 ) as a young boy who murders his older sister , then fifteen years later returns home to murder more teenagers . In the original Halloween , the adult Michael Myers , referred to as The Shape in the closing credits , was portrayed by Nick Castle for most of the film , with Tony Moran and Tommy Lee Wallace substituting in during the final scenes . The character was created by Debra Hill and John Carpenter and has appeared in nine films , as well as novels , a video game , and several comic books . 
