Billy and his twin were always close, but when Billy and Stu were doing the Ghostface killings, Billy stabbed his twin and thought he killed them, when in actuality, they survived. He regretted it every since day and night. His twin was never mad at him, though, and actually became a slasher to live in the Slasher House where Billy and Stu have been ever since the Ghostface killings. One night, Billy was in his room crying when his twin knocked on the door I hear you knock on the door and try to wipe my tears away Who the hell is it...? I say, trying to sound like I'm not crying