Yes Half Vampires,Demi-Vampires, or Dhampir’s, are real. Although they’re an extremely rare breed created by two methods. One is for a First Generation vampire to mate with a human. Although the First Generation vampire would actively try to eradicate what it would call a bastard abomination. The second method is if a vampire goes through the process of turning a human into one of their living dead kind. There is a small window of vulnerability where powerful magical or religious forces can intervene. Generally success equals a Demi-Vampire.
These Dhampir’s often go on to be Vampire Slayers since their human half tends to amazingly mentally dominate their mental state while their physicality is powered up by the demonic vampire side. Demi-Vampires have enhanced strength, speed, agility, and somewhat limited vampire hypnosis skills. They are perfect for vampire hunting not only thanks to their enhanced physical abilities but the fact that they can sense, and track vampires rather easily. This includes smelling vampire blood from great distances. This is why even their vampire parents will try to eradicate them. They can’t risk the danger, and dishonor of being slayed by their own offspring. Naturally their is great dishonor among vampires if one of their kind, or even a halfling, goes around killing them. It’s a stain upon the vampire parent which can lead to their termination by the order of vampire royalty.
The Dhampir’s urge for blood is minimal, and is easily satisfied by a moderate amount of animal blood. They simply don’t crave human blood, and therefore are not a threat to humanity. They eat a mostly carnivorous diet that is heavily raw uncooked meat dripping with blood. In fact they will sometimes have the urge to hunt down an animal with their bare hands. Along with a heavy helping of meat they will drink a glass of the animals blood as well. They can also eat all variety of food as well for the sake of appearances when around humans. However fruits, vegetables, and grains in too large a quantity will weaken them.
They don’t have the ability to transform humans into vampires, or even animals for that matter. Their powers are comparable to super humans even if their father or mother is a first generation vampire. Their human side drowns out the awesome power but thankfully it prevents them from turning evil, and it keeps them loyal to humanity. When angered there is a noticeable glowing of the eyes in complete darkness but it isn’t anywhere near as bright as vampire eyes. They also have retractable fangs smaller than most vampires.
Dhampir’s age extremely slow since they are theoretically half-immortal. The minimal records on such beings indicate that they age one year for every century on Earth. That along with their amazing cellular regeneration would allow them to live to the equivalent of 500 years old which would be 50,000 years of existence. They have an aversion to direct sunlight but they can tolerate it for many hours. They need heavy sun block on exposed skin or they sun burn within an hour. However they will not smoke or burst into flames like a vampire. They are only somewhat repelled by religious artifacts, such as holy water, or crosses, but it’s not enough to deter their use against vampires. Since they can handle these items they can develop a tolerance over time. More or less they lead almost normal lives like average humans unless they choose to fight the dark bloody forces of evil. This puts them on the radar of the vampire community, and makes it a necessity to live like a nomad never able to put down roots.