Alphas stand as the fathers of their allotted species.
Powers and Abilities
As the creators of their specific species, each of them are much more powerful because of literally being the first of their kind.
As well as this, they also possess several unique powers:
- Telepathic Link - They possess a telepathic link to their children, allowing them to track or communicate with them over great distance. They can also learn knowledge their children possess. Although all monsters possess a link to Eve, the Alphas possess a stronger link.
- Immunity - Alphas are more resistant to certain weapons that harm lesser members of their races. For example, the Alpha Shapeshifter is immune to silver and the Alpha Vampire demonstrated a high degree of resilience to dead man's blood. Also, the Alpha Shapeshifter was only slowed down by an amount of tranquilizer fluid that would have taken down an elephant.
- Immortality - Even if their species is not immortal, the Alpha is, provided they are not killed. This is supported by the fact that while Shapeshifters are not immortal, their Alpha did not die until recently, when he was beheaded by Crowley, despite having been alive the last time Eve, the Mother of All, walked the Earth, when all Alphas were created.
- Endurance - The Alpha Vampire was not even phased by being electrocuted, so it stands to reason the other Alphas have an extreme pain threshold as well.
Weaknesses
- The Colt - Can kill any monster.
- Death's Scythe - Can kill anything.
- The First Blade - Can kill anything.
- Leviathans - They can eat them.
- God - As the nigh-omnipotent God, God can kill them.
- Death - As the bringer of death, Death can kill them.
- The Darkness - As the older sister of God, The Darkness can kill them.
- Archangels - As the nigh-omnipotent archangels, The Archangels can annihilate all of them.
- Eve - As their mother, Eve can kill Alphas.
Known Alphas
- Alpha Vampire
- Alpha Shapeshifter (Deceased)
- Alpha Skinwalker (mentioned but never appears onscreen)
- Alpha Werewolf (mentioned by Crowley)
- Alpha Djinn (mentioned indirectly by Crowley)
- Alpha Borderwalker (tie-in Novel only)
- Alpha Khan Worm (Season 6 specimen presumably Alpha)
In the Show
Two And A Half Men
The Alpha Shapeshifter appears before the Campbells to retrieve a baby Shapeshifter, it was immune to everything the Campbells had to throw at it and was able to defeat the Campbells easily.
Live Free or Twihard
The Alpha Vampire showed all Vampires of the nest Dean was currently occupying a vision of his location so that his army could gather to him.
Family Matters
The Alpha Vampire is kidnapped and taken by Samuel and Christian for interrogation, it reveals Samuel's motives of locating Purgatory. It seemed very interested in the fact that Sam had no soul. It escaped the Campbell's custody and snapped Christian's neck in a fight. It was about to turn Sam when Christian injected it with dead man's blood, which weakened it. Three Demons then restrained The Alpha teleporting him away to Crowley's prison. Although snapping Christian's neck had no effect on the demon that was currently possessing him, the Alpha killed the actual Christian.
All Dogs Go To Heaven
The Alpha Skinwalker (off-screen) rallies an army of Skinwalkers who are ordered to turn the families of the pets they are posing as when directed. Also at the beginning of the episode, Crowley alludes to the existence of an Alpha Werewolf.
Caged Heat
The Alpha Shapeshifter appears in the beginning of the episode taking the form of Crowley's host. He was being tortured by Crowley and was killed by a beheading because he would not tell him the location of Purgatory. Weapons made of iridium are capable of harming the Alpha Shapeshifter. At the conclusion of the episode, Castiel clears out Crowley's prison of all the monsters, of which it is mentioned at least a few Alphas were there that were destroyed.
There Will Be Blood
The Alpha Vampire returns, having escaped Crowley's prison before it was destroyed. The Winchesters need his blood to help stop the Leviathans as the blood of an Alpha is one of the ingredients needed for Bone Of Righteous Mortal Washed In the Three Bloods of Fallen. After learning that the Leviathans intend to wipe out his race and when Sam and Dean save him from Edgar, the Alpha Vampire gives them his blood without a fight.