8) ALPHA VAMPIRES ,
The Alpha Vampire was the very first vampire and progenitor of all other vampires. He was one of the Alpha monsters captured and interrogated by Crowley and Castiel in their efforts to locate Purgatory. He escaped Crowley's prison and set up a new nest in North Dakota, and then Montana. He was later tracked down for his blood for the weapon to defeat the Leviathans. Ultimately recognizing a common enemy, he gave the Winchesters what they asked for without a fight. During an attack on the British Men of Letters, the Alpha Vampire was killed by Sam Winchester with the Colt.
It is unknown exactly how old he is, but he mentions he was "the thing in the dark" when humans first built fire, as well has having lived through "continental divide", implying he's hundreds of thou
