True Vampire

Many so called "experts" would include alps, mulas, katakans, bruxae, and nekurats as members of this group. These species indeed possess several unique traits not shared by their lesser cousins, and thus are commonly called higher vampires. They are resistant to sunlight and most can mask their true natures and pretend to be human, which aids them in hunting or evading pursuit. Many are also capable of transformation and possess telepathic powers, making them formidable foes. Despite all these abilities, however, they are not true vampires.
Genuine true vampires are a separate, extremely powerful breed, commanding great powers that are sometimes unique to particular specimens. They are masters of the art of camouflage and in most cases appear nearly identical to humans. Only their their teeth, and the fact that they cast no shadows and have no reflections in mirrors, can reveal their true nature. Besides being supernaturally fast and agile, a true vampire can become invisible, and use their gaze to mesmerize their victims or put them to sleep. They are invulnerable to sunlight, fire, and silver, and have unbelievable regenerative powers which allow them to return to life even after beheading, dismemberment, or incineration- though in such cases the process may take many months.
Only a mutual thirst for blood links true vampires to their distant and much more primitive cousins: ekimmaras, alps, katakans and the like. true vampires are, in fact, much more similar to humans than to those bat-like blood slurpers. They not only resemble us in appearance, but also share our intelligence and behavioral patterns. This means they do not squat in distant forest or hide in the shadows. On the contrary, they are particularly fond of cities, where they live out deceivingly normal lives. Even witches are not capable of recognizing them at once, for true vampires seem to be immune to divination magic to discern their true nature. Yet all these similarities should not blind us to an essential difference: unlike men, true vampires are immortal. Those who have faced them in combat and survived can be counted on one hand.
Even defeating a true vampire in combat does not guarantee it will stay dead, as wounds, even critical, will heal in given time. true vampires cannot be truly killed by just anyone. Only a true vampire can completely kill another of its kind, without the risk of regeneration.
One of their greatest abilities is true immortality where only another true vampire can truly end the existence of another true vampire; no other means, not a master slayer, powerful magic, or even willows wood to the heart can end their lives for good. Instead, they enter a regenerative state, slowly healing over a protracted period of time. Even with this ability, a sufficient degree of bodily destruction can put them down for months, and leave them much weakened even following their regeneration.
It is also assumed that like its lesser kin, true vampires also posses a real, non-humanoid form. However if this is true; no mortal has yet seen it and lived long enough to share its findings.
It is a hunter's good fortune that true vampires are extremely rare. A hunter who braves fighting a true vampire must bear in mind that he faces a monster That we know next to nothing about - and furthermore one which is nearly impossible to kill. In other words, even an experienced monster slayer should think twice before accepting a contract on one of these creatures, even if half a kingdom and a princess' hand is in the offing.