A:/N Hi, this is my first Adventure Time fanfic! I've had this in my mind for some time now, and finally felt I had to write it. I hope you guys like it, there are some good AT fics…I only hope I can measure up to them.

xXxNo one's POVxXx

It was another normal day in the Land of Ooo, the sun was shining, all manors of creatures were wondering about and there was very little evil happing at the time. Even with the lack of evil, the resident heroes, Finn and Jake, were wondering the land, looking for evil to crush ('cause that's their deal). As they were wondering they saw a great flash of teal-blue light.

"What the stuff man? Did you see that?" Finn the human boy yelled to his canine companion.

"It was kind of hard to miss. Come on, someone may be in trouble." Jake the dog said, bounding ahead of Finn. Finn was close behind him though. As they approached the sight of the flash they noticed a girl, no older then 14, standing where the flash had been.

"Hey, there's someone over there." Finn said, still running to the flash sight. They came to where the grass was charred and smoking in some places.

"Hey, kid, you okay?" Jake called to the girl, when they were about three feet away from her. The girl tuned, she had blue eyes, and black hair lighting-bolted with almost white-blond streaks put back in a neat ponytail, she was wearing a black sleeveless shirt that read "Hive 5 + 1" on the front, and a pair of black shorts. There was something strange about her though; her skin was light gray, but it had pale patches of human flesh coloring. Jake jumped back behind Finn, terrified of the creature before them.

"Dude she's a vampire." Jake mumbled, his voice quivering.

"That's crazy; she's in the sun man." Finn pointed out.

"No, your puppy's right, man, I'm a vampire." The girl said calmly, smiling so the duo could see her small, pointed fangs.

"Hey! Who are you calling a puppy?" Jake said angrily, jumping out fro behind Finn. The girl raised her hands in defense, showing off two black leather, silver spiked studded bracelets, one on each wrist.

"How are you in the sun then?" Finn asked, thinking of the only other vampire he knew, and how she burns every time she goes into the sun.

"You really have no manners. Generally when you meet someone new, you introduce yourself." The girl said, giving them skeptical looks.

"I don't introduce myself until I know if someone is an evil monster or not." Finn said, preparing for a fight.

"I mean no harm, young rouges. I've journeyed from afar, hoping to rid the lands here of evil." The girl said.

"Oh…" Finn said, putting his sword back in his backpack.

"She a vampire, she's a natural born liar!" Jake pointed out to his friend. The girl sighed.

"Vampires can tell if other vampires are lying…is there another vampire around here?" The girl asked. The duo looked at one another, weighing their options. Finally Finn spoke up:

"Yeah, there's another vampire. Jake, call Marceline."

"What? How do we know we can trust her?" Jake asked, ever skeptical of vampires. The girl rolled her eyes, and took a deep breath, her eyes resting on the top of a tree.

"No need to call, she's been stalking you two." The girl said, walking over to the tree, drawing a sword blacker than the deepest void out of a black leather sheath hanging at her waist, and smashing it into the tree. The sword left a deep cut in the tree, but a parasol fell out of the top of the tree, not just any parasol though; Marceline's parasol. Marceline's bat form flew into the shadows from the top of the tree; she changed into her vampire form and picked up her parasol.

"Fine, you caught me." She said, opening the parasol, and raising it over her head. The girl was trying to un-pry her sword from the tree, struggling to do so.

"Oh, and, she's not lying, she really is here to help rid the land of evil, and maybe cause a little mischief in the process." Marceline said to the now shocked duo. The girl nodded, still trying to un-pry her sword. Finn walked over to the tree, and in one swift motion, un-pried the dark sword, handing it to the girl, who re-sheathed it.

"I'm almost convinced, but we have to test if you truly have a righteous hero's heart." Finn said, looking at the maybe soon hero.

"Please tell me this has something to do with killing monsters." The girl said, looking at the hero.

"It does. We're going to hunt the baddest monster we can find, and see if you can handle him." The hero boy tested, front flipping over the girl. The girl nodded.

"I don't kill anything of, my own kind though…so no humans or vampires." The girl said almost un-sure of her words. Finn's pre-fight warm-up came to an instantaneous halt.

"Y-you're…human?" Finn's words were whispered, and unsure. The girl nodded.

"Half human, anyway. See; my mom was a vampire, my dad was a human." The girl said, using emphasizing hand-motions. Finn racked his brain; the only other possible human he knew of was Susan Strong, and she was a girl. For three years now (A:/N Yeah, he's 16 now, makes the story easier…for me anyway.), he had been searching, for a ruminant of his past, for any remaining humans, for…anything. He had come up with nothing to show for his work though. He wanted to ask so many questions, but all he could manage to find the words for was;

"Vampire's can have kids?" He mentally kicked himself. Marceline chuckled and nodded at him.

"Vampire girls can, we don't want to bend any other laws of nature though." As soon as the words left Marceline's mouth, a deep red blush formed on Finn's face, causing howling laughter from Marceline.

"Are we going to slay monsters, or not?" The girl asked, watching to silent human, and the still chuckling vampire queen. Finn shook his head vigorously a few times before he turned back to the girl.

"Only if you're up for it." The hero said.

"Any day. Oh, and since you have to know if I'm good or not before you tell me your names, minus well tell you mine; Name's Danielle, but you can call me Danni." She said, extending a hand. The hero boy took her hand, and they gave a firm, hero's handshake.

But our young hero boy had no idea what he was getting himself into…

A:/N Phew…glad that's done, mostly because me and my brother Jay sat and brainstormed names for around 10 minutes, we finally settled on Danni while we we're watching…well, Danny Phantom. I know, I put a lot of loose ends (sorta) and epic foreshadowing. But trust; I have a plan!