Ronald 'Butch' Defeo, Jr.
Dawn DeFeo
Ronnie Defeo, Sr.
Louise DeFeo
Angela 'Nonna' Brigante
Michael Brigante
Marc Defeo
Allison Defeo
John 'Jody 'DeFeo
Donna Benedettio
Steve Pelskie (as Sky Patterson)
Randy 'Beak' Buechler
Officer Aiello
Officer 2 / Shadow Demon
Real Estate Agent
George Lutz
Kathy Lutz
Thug
Shadow Demon
as Luke Aragon
Dawn's Girlfriend
Party Guest
Kid
as Qerri Woods