Ronald DeFeo Jr.
Background
Ronald DeFeo Jr. is the ghost of a murderer who lived at the Amityville House in Amityville, New York. He murdered his entire family.
During the events of The Amityville Haunting (2011) played by Luke Barnett
Donny Reddit, Bri, Brett, and Ivy go to the Amityville house, which Donny films. They break into the house and Brett and Ivy think they see someone, but Donny and Bri just make fun of them. The couple split up and Donny and Bri go together while Brett and Ivy go together. Brett and Ivy are about to have sex when they are both killed, while Donny and Bri are killed while they are having sex. After Douglas Benson, Virginia Benson, Tyler Benson, Lori Benson, and Melanie Benson visit the house, Ronald systematically begins to murder more people including Prunella Weldon, Steve, Greg, and Cut. June 17, 2008. Between 3 and 4 a.m., almost all of the family is killed, Virginia is burned to death, Tyler is mutilated, and Lori's spine is broken, except for Melanie, who disappears after stabbing Douglas to death.