Mr. Peter Myers, played by George O'Hanlon Jr., is a character in the 1978 film Halloween.
Peter is the father of Michael Myers, Judith Myers and Laurie Strode. His name is not mentioned in the film but it is listed in the credits. He is featured at the end of the opening scene standing outside the family home and says "Michael?!" as he pulls off the clown mask. Once he sees that it is Michael, he stares at him in apparent shock. After that scene this character is never shown again. In the sequel from 1981, it is revealed that Mr. and Mrs. Myers died two years after Judith's murder and Michael being institutionalized, leading to Laurie's adoption by the Strodes.
In the sequel, Halloween II, Michael broke into the elementary school and found a child's picture depicting a happy family. He used a butcher knife to stab the drawing of the "sister." It was discovered by the police and brought to the attention of his psychiatrist, Dr. Sam Loomis, who briefly examined it.
Mr. Peter Myers is also the grandfather of Jamie Lloyd and John Tate, the latter one only in H20 and Resurrection. He is the great grandfather of Stephen Lloyd.