Dr. Hydeker

Dr. Hydeker is a Shtriga and the main antagonist of the episode Something Wicked Supernatural.

History
After a series of child deaths, Sam and Dean Winchesters decide to investigate. They meet Dr. Hydeker in the pediatric ward at the local hospital and he says he has no treatment for the immune system. While they investigate similar incidents from the past, Sam discovers a photo of Dr. Hydeker taken in 1890 in which he appears. Winchesters realize that the doctor is a sthriga they are hunting. Shortly thereafter, the Winchesters decide to trap Dr. Hydeker by using Michael a boy who counts as a possible victim of his. With this Dr. Hydeker appears and during the fight Dr. Hydeker tries to feed on Sam, but is killed by Dean when he fed.