Luther (Supernatural)

Luther was a vampire and leader of a vampire litter and the main antagonist of the episode Dead Man's Blood. He and his band of vampires kidnapped people and turned them into vampires to recruit for their pack and some humans were devoured. He has a revenge on Daniel Elkins for killing his family, but he was trying to put revenge aside. And then when his girlfriend Kate stole Colt from Elkins and killed him. Sam, Dean and John Winchester manage to destroy the pack and kill Luther with a headshot. being the first supernatural creature to be killed in the series by the weapon.