"Suppose that at one point a vampire was able to turn a fae into their own kind. I never imagined such a mongrel could exist but if it did, I suppose they might have both powers, faerie and vampire."
A faerie-vampire is a faerie that has been turned into a vampire. For centuries it was thought such a combination could not exist. The main reason being that vampires find faerie blood so delicious, they would be unable to stop themselves from killing the faerie before they could complete the turning. Fittingly, the only vampire-faerie, Macklyn Warlow, was created by Lilith herself.
Warlow, as indicated in the Book of the Vampyr, is one of the progeny of Lilith. He caused his makers downfall thousands of years ago and has been active in some form even in the common Era. His name is known to those who have studied the Book of Lilith, but he remains a mysterious figure.("Who Are You, Really?")
Since Warlow, the feat of creating another vampire-faerie hybrid does not appear to have been replicated. It is likely not even considered, given how few vampires know about faeries in modern times. Since other supernatural creatures like weres and maenads cannot be turned, it was probably thought that faeries couldn't be either. Warlow himself was only found out due to a relatively random series of events. ("F**k the Pain Away")
Characteristics
Biology
The vampire side of Warlow.
Faerie-Vampires are indistinguishable from normal Faeries and appear as they did when they were turned. Their minds can still be read by faeries and halflings. Like vampires, they have fangs that extend and retract willingly, though they can be stimulated to extend unwillingly. Since Warlow came into physical contact with Sookie and Niall without arousing suspicion, it also seems that vampire-faeries have functional circulatory systems and are warm to the touch like faeries. Faerie-vampires can subsist on mortal food like faeries, or on blood like vampires. ("You're No Good")
Though they appear human, the true form of a fairy-vampire is like a goblin. ("Radioactive")
Psychology
Warlow attacking Sookie
Psychologically it seems Faerie-vampires are unable to control themselves once the sun sets, Warlow who is over 5,500 years old and should have better control over his bloodlust is unable to stop himself from attacking once night falls. This may be because Vampires are natural predators of Faeries and thus a Hybrid would be slightly unbalanced due to the conflicting essences, Vampires are creatures of darkness, while Faeries are creatures of light. Its possible that Warlow couldn't control his thirst because of his maker Lilith never taught him how, just like vampires. ("Don't You Feel Me")
This variable lack of control is specifically driven by the thirst for blood it seems, as Warlow only demonstrated uncontrollable urges at night-time whenever he was hungry. Warlow was able to drain Niall Brigant (a faerie elder who should be completely irresistible to any vampire) without consuming his blood, thereby confirming that he does have some level of control, it only varies according to hunger, which is the norm for most vampires irrespective of their age.
Powers & Abilities
Warlow's fae powers.
Powers of Fairies and vampires: Faerie-vampires possess all the powers of faeries and the vampires, such as telepathy, photokinesis, dimensional manipulation/creation superhuman speed, superhuman strength, heightented senses, accelerated healing, flight and glamouring. ("At Last") As with normal vampires and fairies, faerie-vampires become more powerful as they age, in terms of both their fae and vampiric abilities.
Silver & Invitation Immunity: Thanks to their heritage faerie, Faerie-Vampires possess the ability to enter the homes of human's without an invitation and are not affected by silver, making them far more powerful than either vampire or faerie. ("At Last")
Maker abilities: The maker/progeny bond seems to function the same for faerie-vampires as it does for standard vampires, since Bill (or rather, Bilith) was able to command Warlow. ("F**k the Pain Away")
Faerie-vampire Blood Abilities
Faerie-vampire blood
V Abilities: The blood of a faerie-vampire also combines the powers of both species. It can be used as V but also enables the Faerie-vampire to daywalk indefinitely. ("At Last") In addition, drinking the blood of a vampire-Faerie seems to increase or somewhat replenish the powers of a halfling, whose powers are normally finite. ("In the Evening")
Daywalking Abilities: Consumption of faerie-vampire blood by a standard vampire grants them daywalking indefinitely. ("In the Evening") Not only this, but when regular vampires feed from another regular vampire that has already consumed some amount of faerie-vampire blood, then they too acquire the daywalking ability, thereby indicating that its effects have a contagious nature ("Life Matters"). However, if the faerie-vampire meets the true death, then any vampire who gained the ablity to daywalk through that faerie-vampire's blood, loses this ablity. ("Radioactive")
Healing power: The blood of a faerie-vampire is capable of healing both vampires and humans alike; it can heal humans because of the vampiric nature of the blood and it can heal vampires because of its part-fae nature. Its ability to heal vampires was confirmed when James saved a dying Bill Compton with some of Warlow's blood which he received from Bill himself, and when Warlow mentioned to Sookie that once she was turned they would both heal each other before getting staked at the hands of Niall and Jason. ("Radioactive")
Perpetual Nourishment: Based on Warlow's conversations with Sookie, it can be presumed that 2 faerie-vampires can indefinitely sustain each other by feeding off each other's blood, something ordinary vampires themselves are incapable of as normal vampire blood doesn't heal vampires.
Stakeout: It is revealed that, even if it is not instantaneous as in normal vampire, Faerie-vampire may be killed by staking. Like ordinary faeries, a fairie-vampire returns to its original / true appearance which is a human-sized goblin-like creature. ("Radioactive")
Sookie threatening Warlow
Super Nova: Warlow was seen to get burned by the "Super Nova" technique, hinting he has some vulnerability to faerie magic despite being one himself. Considering the speed with which he recovered from the burns however, this power is not as lethal as for normal vampires. ("F**k the Pain Away")
Faerie Magic: In addition to the above mentioned "supernova" vulnerability, faerie-vampires can also be restrained by objects enchanted by fae magic, which can leave them susceptible to attack from even younger vampires. ("Dead Meat")
Warlow was the oldest known supernatural being, and was the only Faerie-vampire currently in existence
Notes
When Bill receives the visions on the offspring of Lilith one of them can be seen in the sun indicating a possible Faerie ancestor .
As normal faerie, Faerie-vampire are able to send others in other dimensions, against their will. ("At Last")
Considering his feeling in regards to vampires, it is unknown and unlikely whether Warlow has created other Faerie-vampires during his lifetime.
It is not known if faerie-vampire's blood can allow vampires immunity to silver, but when Bill came to Governor Burrel's mansion, he was shot multiple times with what probably was a combination of UV and silver bullets. It's unknown if Bill's Lilith powers had anything to do with this.
Most likely a human being transformed from a Faerie-vampire would possess the ability to daywalking since the day of its transformation.
Warlow has expressed a desire to turn Sookie Stackhouse. ("Don't You Feel Me") However, given the true death of Warlow is highly unlikely that there will be other Faerie-vampire in the future. ("Radioactive")
