Billy (Black Christmas)

Billy is the main antagonist of the horror film Black Christmas.
In the original, Billy is an unknown killer who taunts the sorority and was portrayed and voiced by Nick Mancuso.
==History==
There is almost no information given about the killer in the original movie. All that is known is that a person climbs into a sorority house, and starts making obscene and sexual phone calls to the girls downstairs.
From the phone calls, the audience discovers that the man's name is Billy, and he obviously is mentally unstable. Billy routinely repeats phrases over the phone that give hints to his identity. It is assumed that he sexually abused his younger sister Agnes. And his parents abused him regularly.
Billy goes on a killing spree killing the girls in a delusional rampage. He attempts to kill a girl named Jess but she manages to lock herself in the cellar. Her boyfriend Peter gains access to the cellar and believing he is the killer making the phone calls, ends up bludgeoning him to death in "self defense" and she is later discovered by the police, making them believe Peter must have been the killer all along.
The police leave Jess to sleep and leave, while one cop waits outside for forensics to arrive. However the camera pans into the attic where the two bodies of Billy's victims are still there, and he can be heard saying "Agnes, it's me Billy"; the telephone then rings. The ultimate fate of Jess is left ambiguous to the audience.
==Gallery==