The killers in the original Scream (1996) are Billy Loomis and Stu Macher. They reveal themselves as Ghostface at the end, having collaborated to carry out the string of murders. For clarity on who did what in Scream (1996):
- Billy Loomis: helps initiate the killings and ambushes several victims; provides the initial motive tied to his relationship with Sidney Prescott and a calculation to frame others.
- Stu Macher: Billy’s accomplice, handles some of the on-screen assaults and contributes to the overall plan, including pivotal scenes that seal the killers’ reveal.
If you’d like, I can summarize each victim’s fate and who was Ghostface behind each attack, or compare the reveal in Scream to later installments.
