"Have you been on College Humor lately?"

"Zombie bites werewolf. Werewolf is typically a living human infected by a werewolf through a bite. So a zombie bite could either infect in tandem, infect and override, or do nothing.

Override gives you a normal zombie. Tandem would be a were-zombie. Nothing is werewolf.

Vampires are considered dead, but it's possible for the same kind of rules. Tandem would be a sentient, vampire-zombie. Override is zombie, and nothing is vampire.

As for what kills the hybrids, the staples would still be fire and beheading. It works for most things."

"I think fire is a bad idea - zombies chasing you is bad enough but flaming zombies? No thanks. :P"

"I would think each creature would maintain it's species."

"First off, I'll question you. Do you really believe in werewolves and vampires?

Why are you taking a question such as this so seriously?

The odds of all three of these fictional creatures coming into existence, and combining is astronomically small, but I'll bite (no pun intended).

Seeing as both the werewolf, vampire, and zombie problem can be solved by decapitation, preferably with silver (in some myths vampires are also weak to silver) I think the best solution would be a high powered round, custom made of silver (it wont be as accurate as lead, and you may have to modify the firearm). The 50 BMG, 50 BEOWULF (for some reason, I imagine the beowulf would be perfect) or any round that is large enough to destroy a good portion of the head (essentially decapitating it) would be perfect for the job.

You take the time to spell things, and don't have a wall of text, so I generally believe your not a troll, or an idiot (sorry a lot of those have passed through lately, not in any way trying to link you to them) so, good luck, and I hope you become another constructive member."