Aswang

The crippled matriarch of the Null family, Olive rules the estate with chilling poise. She exerts control through subtle manipulation and a cold insistence on keeping the family’s dark secrets intact. Her presence embodies the estate’s oppressive legacy and its power over others.

A young, unmarried woman who agrees to be a surrogate for money and to pose as Peter's wife. Initially frightened and pragmatic, she grows determined to escape when she realizes the danger to her unborn child. Her choices drive the plot and test her resolve under extreme coercion.

Wealthy heir to the estate who treats pregnancy as property and manipulatively orchestrates the deceit around Katrina. He is controlling, cruel, and motivated by status and lineage. His actions propel the horror and reveal the family’s predatory nature.

The devoted Filipino maid who was once a midwife. She remains loyal to the Null family, while secretly serving as a guardian within the estate. She plays a key role in the escape and later in protecting the child, embodying a quiet strength.

The mentally ill, reclusive sister of Olive who shares the estate's dark secrets. Her fragility contrasts with the family’s ruthlessness, and she represents the psychological horror that festers within isolated households.

An eccentric mushroom forager who detects that something is wrong at the estate. He becomes a key outsider who collects fetal cocoons and uncovers the truth about the family’s vampirism, putting himself at risk.

A young girl glimpsed five years later, hinting that Katrina’s child survived and became heir to the estate. Her presence marks the continuation of the Null lineage and the horror it represents.