https://en.wikipedia.org/wiki/Michael_Myers_(Halloween)

Michael Myers is a fictional character from the Halloween series of slasher films. He first appears in 1978 in John Carpenter's Halloween as a young boy who murders his elder sister, Judith Myers. Fifteen years later, he returns home to Haddonfield 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 and substituted by Tony Moran and Tommy Lee Wallace in the final scenes. The character was created by John Carpenter and has appeared in ten films, as well as novels, multiple video games, and several comic books.

The character is the primary antagonist in the Halloween film series, except Halloween III: Season of the Witch, which is not connected in continuity to the rest of the films. Since Castle, Moran, and Wallace put on the mask in the original film, six people have stepped into the same role. Castle, George P. Wilbur, Tyler Mane, and James Jude Courtney are the only actors to have portrayed Michael Myers more than once, with Mane and Courtney being the only actors to do so in consecutive films. Michael Myers is characterized as pure evil, both directly in the films, by the filmmakers who created and developed the character over nine films, and by random participants in a survey. In the first two films, Michael wears a Captain Kirk mask that is painted white. The mask, which was made from a cast of William Shatner's face, was originally used in the 1975 horror film The Devil's Rain.