Eliza Dushku tells you what a Vampire Slayer is!

“Professional” or semi-professional vampire hunters played some part in the vampire beliefs of the Balkans (especially in Bulgarian, Serbian, and Romani folk beliefs). In Bulgarian, the terms used to designate them included glog (lit. “hawthorn”, the species of wood used for the stake), vampirdzhiya,vampirardzhadazhiyasvetocher etc.

They were usually either born on Saturday (then called Sabbatarians, Bulgarian sâbotnichav, Greek sabbatianoí) or the offspring of a vampire and a woman (typically his widow), called a dhampir in Romani or a vampirović in Serbian. It was also believed that someone born on a Saturday could see a vampire when it was otherwise invisible[1][2][3] (and sometimes other supernatural entities as well); similarly for the dhampir. In the case of the Sabbatarians, it was believed in some places that they needed to be fed meat from a sheep killed by a wolf (Bulgarian vâlkoedene); this would enable them not to fear the things that only they were able to see.

In some traditions, the killing of vampires was only performed by vampire hunters. Aside of the well-known manners of execution (staking the corpse, burning it etc) that were normally entrusted to them, the hunters were also capable of using other methods such as enticing the invisible creature with music and then shooting it, or throwing its hat or head-cloth into the water and telling it to go fetch it (which caused it to drown)