Lean, bleached-blonde, smoking, with a, oh, wait, pepper already beat me to it.
I once tried to write the Great American Vampire novel, but I abandone the project after being attacked by one too many plot bunnies.
Anyhoo, I have three different varieties of vampire, but they all straddle the line between the Eastern European folkloric vampire and the literary vampire.
Variety 1 is based on the idea that an evildoer who has never received his/her comeuppance in life is doomed to become a vampire after death. Basically, someone who is a psychopath but was not punished for his/her crimes can rise as a vampire in death, especially if they died an unnatural death, such as accident or suicide. This is the truly, truly evil variety that lives to kill, enjoys creating mayhem and dominating others, and generally being very nasty. These creatures can create…
Variety 2. These are created either through having been preyed on over a period of time (there really is something to the 'three bites and you’re out" theory) until they die, or are “sired” in the fashion of Jossverse or Anne Rice vampires, by being drained of blood then by drinking the blood of a vampire. These types may or not be evil, depending on whether they were evil in life. The “sired” type is more likely to be evil, because an evil person is more likely to want to become a creature that lives by feeding on human blood. If they were a good person in life, they struggle with the fact that they are dependent on human blood for survival, try to feed without killing, maybe occasionally sire another vampire for companionship…
Variety #3 exists to explain the idea that vampires can shape-shift. In some EE folklores, a werewolf can become a vampire after he/she dies. This is the only variety of shape-shifting vampire. In life, they are confined to tuning into whatever were-animal they were bitten by, on the full moon. After death, they can pretty much turn into whatever the hell animal they want to, pretty much at will, but only at night.
All of my vampire varieties can go out during the day (my main vamp character undied in his early twenties, and artificially ages himself by exposing himself to sunlight for brief periods of time.) but they don’t have the supernatural strength, or the ability to climb vertical walls or squeeze through spaces that would challenge a hamster that they have at night, and their hypnotic abilities are at minimal strength.
Vampires start off really nasty, basially walking, blood drinking corpses. After a period of a few weeks, their intelligence returns, and, if they were a good person in life, so does their conscience. They find ways of reintegrating into society, and eventually those who really don’t like the idea of feeding on human blood find alternatives that can include animal blood, raw critters such as crawfish or live lobsters, live culture yogurt, eggs laid by free-range chickens and psychic energy. A widely varied diet of things that still have life in them is necessary to replace human blood, however, especially the psychic energy (my vamp makes his living as a psychologist, and basically soaks up the energy released in therapy sessions, leaving the clients feeling a bit tired but emotionally relieved).