• Tiyanak or impakto are babies who died before receiving baptism rites. After death, they go to a place known as Limbo, a chamber of Hell where unbaptized dead people fall into, and transformed into evil spirits. These phantasms return into the mortal realm in the form of goblins to eat living victims. The tiyanak can also be the offspring of a woman and a demon. It can also be the aborted fetus, which comes to life to take revenge on its mother. Most Tiyanaks are said to live in forests. If they see a human, they transform into what looks like a normal baby. When the person notices the Tiyanak and comes near to take a look at it, that's when the Tiyanak changes back to its true form and eats its prey.

Appearance and behavior

• During the day a tiyanak might appear to be an ordinary baby. By night, however, it grows sharp teeth, long fingernails, and black and hairy skin.It lures its victims by imitating the cries of an abandoned baby. Anyone who makes the mistake of approaching or picking up the "baby" is attacked. Aside from slashing victims, the tiyanak also delights in leading travelers astray or in kidnapping children. In some instances, it is said that once given the chance to suck milk from the breast of a mother, the tiyanak will drain all her blood.

Types

• Mantianak - Described as a baby with a long beard. Pregnant women who hear its cries end up miscarrying.
• Muntianak - A baby who died in the womb. Lives in the forest and terrorizes people.