Vampires are easily the most recognized of all undead and retain their humanity to some degree. However their hunger for the blood and life force of humans drives them to do things they may not have done in life. While a magical disease is the cause of vamprism, it seems impossible to cure and people changed into vampires don't all become one 'type' of vampire. Even the Sire of a new vampire isn't always the same type as the new born vamp. All vampires however have the same cravings to feed, enhanced strength and speed, and are effectively immortal outside specific conditions.