Strigoi

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, and the propensity to drain the vitality of victims via blood loss. Strigoi are also known as immortal vampires. The strigoi can be a living man, born under certain conditions:

Be the seventh child of the same sex in a family

Be redhead

Lead a life of sin

Die without being married

For perjury

By suicide

Have been cursed by a witch.