Note: I had considered putting this as a crossover, but when it comes down to it, it's not really. It's based on Buffy, of course, but all the characters are from Glee and you don't need to have seen Buffy to get anything. Of course, if you don't want major plot points of Buffy spoiled for you, I'd suggest you go watch that amazing show first! Otherwise... enjoy!
Quinn the Vampire Slayer
Prologue
In every generation there is a Chosen One. They alone will stand against the vampires, the demons, and the forces of darkness. They are the Slayer.
It was a warm, breezy night in Lima, Ohio. McKinley High School was closed for the night, the doors locked tight and the campus completely silent. Except in one dark classroom, where a windowpane shattered and a hand reached through to unclasp the window. A young man and woman crawled through the window together, the girl helping the boy inside. The boy had his hair styled in a perfect, tousled look, and he was dressed neatly in a collared shirt and tie. The girl, on the other hand, was a little bit rock-and-roll, with black nail polish and straightened dark locks. She looked at the boy with a smirk. He was trying not to show it, but he was clearly nervous.
"Are you sure about this?" he asked, looking around as the girl led him into the hallway.
"Positive," she said. "Come on."
"Do you go here?" he asked—she seemed to know her way around the place.
"I used to," she said. "I was a Cheerio—cheerleader. Can you believe that?"
The boy swallowed, shook his head.
"I know a way to get to the roof on top of the gym," the girl said. "It's so cool—you can see all of Lima from up there."
"I—I'm not sure about that," the boy said. "I think we'd just get in trouble."
"You can count on that," the girl said, pulling the boy towards her, their lips coming closer.
He suddenly turned his head, startled, looking around nervously as though he had heard something. The girl looked a little annoyed.
"What was that?" he said.
"What was what?" the girl asked.
"I think I heard a noise."
"It's nothing."
"But maybe it's something…" he peered down the darkened hallway—all he could see was lockers.
"Or maybe it's some 'thing'!" the girl said, rolling her eyes and trailing her fingers up his chest to tickle him.
"That's not funny," he said, pushing her lightly away.
The girl walked a couple steps down the hall in the direction the boy had been looking.
"Hello-o-o?" she called, then turned back to the boy, who was standing right behind her. "There's no one here."
"You're sure?" he asked, taking one last glance down the hall.
"Absolutely," she said, moving in closer.
"Okay," he said.
But when he turned back, the baby faced young man had transformed into something else entirely. His features had contorted into something monstrously different, and fangs protruded from his lips as he lunged towards the girl.