Grotesque

Lisa is Orville's daughter who becomes the focal point when intruders invade the family home. She is resourceful and determined, fleeing the scene and surviving long enough to confront the attackers, though she ultimately dies during an emergency operation. Her arc anchors the drama and exposes the limits of protection against intruders from within the house.

Kathy is Lisa's friend who accompanies her to the house. She becomes a victim of the gang's assault, resisting until the end of the confrontation. Her fate underscores the brutality of the intruders and the fragility of safety in the film's opening acts.

Orville is a special effects artist who hosts a prank with his creations before the violence escalates. He is killed by the gang during the break-in, and his death marks a turning point in the brutal disruption of the family’s life.

Scratch is the gang's leader, a violent thief on the run after a mass murder. He contributes to the terror through intimidation and coercion, and faces consequences as the story hurtles toward Rod's vigilante retribution.

Shelley is Scratch's partner and participant in the gang's brutal acts. She is implicated in the assault and ultimately faces the same fate as Scratch when Rod enacts his brutal revenge.

Rod is Lisa's uncle and a plastic surgeon who arrives after the chaos to confront the attackers. He later reveals his own deformity and orchestrates a surgical act of vengeance, showcasing a calculated and chilling sense of justice.

Lisa's mother is killed by the intruders early in the invasion, a fatal blow that sets the film's darker tone and intensifies the family's vulnerability.

Lisa's adopted, severely deformed brother who appears to terrorize the criminals with his acts of murder and finally clashes with the police. His existence justifies Rod's later actions and underscores the theme of monstrous power.