Silent, unstoppable serial killer driven by an inexplicable urge to murder on Halloween night.
Lynda is one of Michael's early Halloween-night victims.
At Michael's abandoned home, Michael appears after attacking Lynda's boyfriend and strangles Lynda.
Annie becomes one of Michael's targeted victims.
Michael attacks Annie after killing her boyfriend, and Laurie later finds Annie badly injured at the Wallace residence.
Laurie is revealed to be Michael's surviving younger sister.
Loomis learns that Laurie is Michael's baby sister and that she was adopted by the Strodes after their mother's suicide.
Loomis is Michael's psychiatrist and long-term clinical observer.
After Michael is sentenced to Smith's Grove Sanitarium, he is placed under Dr. Samuel Loomis's care. Loomis continues treating Michael for fifteen yea...
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Related entry on Wikidata (Q1426891), public domain (CC0).