Main Points:
Jojo's Bizarre Adventure/Buffy the Vampire Slayer AU
Chapter Summary: Xander spots a dangerous artifact, and the Stone Mask begins to haunt his dreams.
Word Count: 1376
Rating: K
Note: HERE THERE PROBABLY BE BUFFY/JJBA SPOILERS. READ AT YOUR OWN RISK.
A/N: It's probably important to mention at this point that there are several different types of vampires that will be running around in this fic. The first is the 'normal' (at least, to the Watcher's Council) brand of Buffy vampires. There's a lot of emphasis on family lines and intrigue between different groups and Master Vampires holding power. (Some vampires just want money or to watch the world burn.) The recently vamped are pretty weak and fairly easy even for humans to stake, and they grow in power as they age (i.e. survive not staking). They're stronger than normal humans and faster, but other than that they usually have to train or learn magic or the like just like humans. They feed by sucking blood, and can pretend to be human usually, though when angered or otherwise wanting to go into combat have a 'Game Face' which appears much more feral than the human visage. They cannot enter homes uninvited and can be killed by decapitation, staking, sunlight, fire, and holy water.
In other words, the vast majority of them are the wimpier, easier to kill cousins of Jojo's vampires. Ancient vampires are far more likely to be tougher, but still provide more ways to kill them.
JJBA vampires usually feed by sticking their fingers into the bodies of their victims. Sunlight works, and fire weakens them, but good luck trying the other methods. Those who run into these vampires with either Hamon or Stands (which do more damage than just ordinary fighting, but you'd still need to have more endurance than the vampire in question to survive that) have an edge over the ordinary populace, but the fact that these vampires are still a lot tougher still remains.
The Turak-han introduced at the end of Buffy are probably related—like JJBA vampires, only fire and sunlight and massive damage really do anything to them, but they're more likely to kill you before you can kill them. Still, they have very little in human intelligence, more the sort of predator cunning, and as far as anyone's aware did not used to be human.
If anything else needs clarified, don't hesitate to ask!
CAST OF CHARACTERS APPEARING IN CHAPTER 1
Spike-A Buffy vampire with a soul who's joined up with the Watcher's Council. Like Angel, he is of the line of Aurelius, but doesn't trust magic. He likes to talk about how he's still the Big Bad, but he's practically adopted this group as family, and if you threaten them, he'll do his best to show you why he kept the nickname "the Bloody".
Glory-A Hell goddess the Scoobies fought.
The First-The First Evil. As an insubstantial ideal, the First could not physically affect the world, but could use agents and also take on the appearance of the dead to torment its enemies.
Angel-Also a Buffy style vampire. Nicknames: Deadboy, Peaches. He also doesn't tend to use magic, despite being of the line of Aurelius, but is more knowledgeable in such things than Spike. He tends to brood a lot, but if he's not currently evil or brooding too deeply, he's definitely useful in the good fight.