Billy Loomis

Billy Loomis is the central antagonist of the Scream franchise, serving as the main antagonist of the original Scream, the posthumous overarching antagonist in Scream 2, and a posthumous antagonist in subsequent films.

Billy is the boyfriend of Sidney Prescott, the heroine of the film series and he is recruited into playing the part of Ghostface by Sidney's half-brother Roman Bridger. Billy is left susceptible to Roman's machinations due to his family being fractured by the Prescotts. Hank "Henry" Loomis, Billy's father, was caught having an affair with Sidney's mother thus driving away his mother. Roman showed Billy the evidence of the said affair and convinces him to aid in terrorizing and murdering Maureen Prescott. Billy is aided by his somewhat dimwitted friend, Stu Macher (Matthew Lillard). Billy is killed, when Sidney shoots him in the head.

Biography
Billy's mother was Nancy Loomis and his father was Hank Loomis. Hank was secretly in a relationship with Maureen Prescott, the mother of Billy's girlfriend Sidney. Billy was blissfully unaware. One day, Sidney's half-brother, Roman Bridger, approached Billy and showed him videos of Hank and Maureen, along with other men. Billy was infuriated. Roman suggested that Billy kill Maureen, and gave him some pointers, such as getting an accomplice to sell out if he is caught.

Billy pressures his best friend Stuart "Stu" Macher into being his accomplice. They are not caught, nor suspected and therefore they want to continue their killing spree. Billy waited outside and called Stu's ex-girlfriend Casey Becker on the phone; while Stu was waiting for Steve. The call was at first charming, until he started to get aggressive. By this point Steve was there and Stu was tying him up on the back patio. Billy revealed to Casey that her boyfriend Steven Orth was tied to a chair outside. To defend Steve, Casey was forced to answer horror movie trivia (Billy was a horror fanatic). She got the second question wrong due to it being a trick question. Stu had been waiting near by for Billy’s single and then killed Steve. Casey begged them to leave her alone, but Billy told her they weren’t “finished yet”. He proceeded to ask her what door he was at, when Stu threw the chair. Billy then enters Casey’s house when she grabs a knife, and runs out. Billy catches her thru the window and she hits him on the head. Casey runs and see’s her parents car coming down the road. Billy then jumps at her and he is the one who attacks and stabs Casey. We know this because Billy loves to Strangle his victims, just like he does to Sidney at the end of the film. Billy strangles Casey, but she manages to get away. However, he ends up catching up and stabs her even more after she pulls of his mask and sees his face. Billy then proceeds to drag her to the side where Stu joins him outside. It is at this point that Stu most likely helps “gut” Casey. Evidence of this is Casey’s parents are in the house and are looking for her. Stu would have to be outside. Stu also describes how to gut someone the next day at school. It is highly unlikely that Billy could have tied her up and hung her on the tree by himself. There had to be two people do so. We know that both Billy and Stu took parts in the killing and raping of Sidney’s mom because they mention it at the end of the movie. So it makes sense that they would both take part in the murder of Casey.

During a discussion, in which Randy Meeks jokingly accused Stu of being the killer, Stu nervously denied it and Billy immediately shuts Stu up. Their next target was Principal Himbry, who was stabbed by one of the killers in his office. By this time, the "Ghostface" costume had been identified, but nobody suspected Billy or Stu until a costumed Stu attacked Sidney in her house. Billy came to her defense, but he dropped his cell phone and she suspected him of making the calls. He was questioned, but the conclusion was that Billy was innocent.

Billy pretended to strain his relationship with Sidney in order to make her feel guilty for accusing him. She went to a party at Stu's house, which Billy and Stu had planned to be a bloodbath. Billy didn't show up for hours as he was at the high school, waiting till nightfall to hang the principal from the goal post in the football field. At this time, Billy was killing Tatum and went around the house to make it look like he just “arrived”. Once Billy “arrived”, he gestured to Stu, confirming that the next phase of the plan was in motion. Now that the principal was hanging, they had a way to empty the house.

Billy asked Sidney what he could do to prove that he is not a killer moments before Stu came in and pretended to stab Billy. After an intense chase around the Macher house, Billy feigned injuries and fell down the stairs in front of Sidney. She handed him a pistol and he let Randy into the house. Quoting Norman Bates, he shot Randy in the chest and revealed himself as Ghostface. Sidney ran into the kitchen to hide from Billy, but Stu was waiting there, and revealed himself as Billy's accomplice.

Billy explained his true motives and then held Sidney at "knife point" while Stu framed Sidney's father Mr. Prescott for the spree. Gale Weathers then arrived and took the pistol from where Stu had set it down; she aimed it at Billy and Stu. Billy knocked her out and was about to shoot her, saying, "This is Gale Weathers, signing off..." until Stu noticed that Sidney had escaped. Sidney confronted them on the phone and Billy flew into a rage, ripping up pillows with the knife/dagger. Sidney then rammed him with an umbrella, causing him to fall down. She then killed Stu by dropping a TV on his head. Billy appeared, only to be shot in the chest by Gale. Randy warned Sidney that Billy would return for "one last scare". Billy then began to sit up, but Sidney shot him in the head, ending his life and the original Ghostface spree.

Legacy
Billy's mother would go on to become the second Ghostface in revenge for her son´s death, igniting the events of Scream 2 on the way, too. Finally, the events Billy ignited by continuing the killing spree in Scream after killing Maureen indirectly ignited the events of Scream 3, where Sidney finally finds out the truth regarding her mother´s death through her half-brother, who wanted the fame she achieved by stopping Billy and his mother. In Scream 4, Sidney's cousin Jill follows in Billy's footsteps. Ironically, Billy and Stu never betray one another nor did it seem like it would have happened as their plan was mostly working until the end. So far in the series with the exception of Scream 3 and Scream 5, in Scream 2 Mickey is betrayed and shot by Mrs. Loomis while in Scream 4 Charlie is betrayed and stabbed to death by Jill.

Murders committed

 * Maureen Prescott (alongside Stu Macher)
 * Casey Becker
 * Principal Arthur Himbry
 * Tatum Riley