In Romanian mythology, strigoi are the troubled souls of the dead rising from the grave. Some strigoi can be living people with certain magical properties. Some of the properties of the strigoi include: the ability to transform into an animal, invisibility

Invisibility

Invisibility is the state of an object that cannot be seen. An object in this state is said to be invisible . The term is usually used as a fantasy/science fiction term, where objects are literally made unseeable by magical or technological means; however, its effects can also be seen in the real...

, and the propensity to drain the vitality of victims via blood loss. Strigoi are also known as immortal

Immortality

Immortality is the ability to live forever. It is unknown whether human physical immortality is an achievable condition. Biological forms have inherent limitations which may or may not be able to be overcome through medical interventions or engineering...

 vampire

Vampire

Vampires are mythological or folkloric beings who subsist by feeding on the life essence of living creatures, regardless of whether they are undead or a living person...

s.

A strigoaică (singular feminine form) is a witch.