Films: Happy Birthday to Me (1981)
Location: Civilized area
Height/Weight: That of an average human.
Summary: Admittingly, a birthday has a tendency to remind you that you're getting old fast. But now, it's an opportunity for some murderous misguided vengeance.
History: Ann Thomason and Ginny Wainwright were half-sisters, but the latter didn't know that. Ann was the result of Ginny's mom having an affair with her father. It ruined her life, and drove her to madness. She decided to ruin Ginny by donning a disguise that looked just like her. Cue the murders of the "top ten", an elitist group of high schoolers.
Notable Kills: That kebab kill that the posters so graciously advertise all the time.
Final Fate: Eventually, Ginny and Ann meet, and after the latter explains the situation, she is violently stabbed to death by the distraught Ginny. The authorities can only look in horror...
Weakness: Anything conventional.
Scariness Factor: 3.5-A clever one, this killer is. Her plan is a bit elaborate, and her kills are definitely that of the creative sort. Though maybe she shouldn't explain it all to the one she's trying to ruin.
Trivia: -Reportedly, actor Glenn Ford, the token notable star in this film, was awful to everyone, having little patience to be starring in a low-key slasher film.
-This film faced a bit of controversy due to being filmed not long after the infamous death of John Lennon just a year before release.