Disclaimer: All rights go to jk rowling and marvel. I only own my own plot and story.

This is a new story and I'm new to the whole crossover fanfic. So if I make any mistakes please let me know.

fem/harry. Mistress of Death. This chapter isn't that long, because I am just setting up for the rest of the story. Hope you enjoy. Fav/Follow and review.


It has been nine hundred years since she defeated Lord Voldemort. And it has been nine hundred years since she last saw her friends... her family. She left, she really didn't have much of a choice. Alexis Potter had ran three weeks after the final battle, she never did return to the Wizarding world. She would tell herself it wasn't time yet, that she would go when she was ready. Well, she was ready now. The only problem was there was no longer any witches, wizards, not even the magical creatures. They had died out, gone extinct, lay forgotten by the rest of the world. Alexis had tried many times to join them in the after-life or whatever came after death. But no matter how many times she tried, or how she tried to do them... she just couldn't die. After the fifteenth failed attempt she assumed it was the whole Mistress Of Death thing. So she threw the resurrection stone into the middle of the ocean. Placed the invisibility cloak in the middle of a burning building. And snapped the elder wand in two. But the Hallows would always find her.

The Stone appeared set in a golden ring upon her finger. The Cloak appeared draped across her shoulders without one single burn on the shimmering cloth. And the Wand restored from the two splintered halves to the sixteen inch elder wood that she detested. It was these three items that brought her back to life every time she died. And Alexis Potter was in the habit of dying... a lot. She would risk her life for any man, woman and child that was in need of it. As Hermione once said she had a saving-people complex. She could and would do anything she could to prevent someone's death or pain. She did it often enough. Hermione... Ron... Neville... Luna. She couldn't think of them without a pain in her chest. Guilt and grief flooding her. It didn't matter how long ago they died, it never hurt any less. She was the only one left.

Some time during her very long life she decided to actually live it. She moved to America, LA to be precise. She obtained verification papers and ID's, thanks in part to a few well placed confundus charms, and she went back to school. Within a few years Alexis had gained degree's in Physics, Electrical Engineering, Chemistry and Biology. Part of becoming Mistress Of Death was the enhancement of her powers and abilities. Her spells were controlled, and she could wield her magic with just a wave of her hand. She never tires, having ran for four hours without so much as a strangled breath or sore muscle. Her brain absorbs knowledge and Information faster, she only needs to read or see something once and she remembers... everything.

It was the last one that bought the eccentric Mr Stark to her university three years ago. He had been asked for years to speak at the graduation ceremony at his old school MIT. And every years he had declined, except this year. Tony had been both impressed and intrigued by the young raven haired genius. She had managed to design and build a Holographic computer. Something which he had been researching for the past few weeks when he discovered it had already been created. He had struck up a conversation with her after his speech. Most of the graduating class wanted to ask him questions about his many conquests (the guys), and oh so subtly ask to be a conquest (the girls and a couple of guys too). But all Alexis wanted to ask him about was the arc reactor he was currently designing, how long the reactor would last, and how much energy would it emit. And after she suggested to make the reactor coil larger and add in the cooling system... he hired her.

That was three years ago, and she was the only person Tony Stark would allow into his garage/office/lab. And the only woman he would allow to live in his home for two reasons, the first being that he genuinely cared about her, he thought of her as his annoying little sister, Alexis was his best friend he liked her because she never asked for anything and if he offered she said she could but it herself. The second being, when she first came to work for him he admits, he tried to sleep with her... she was the only woman he went after to have turned him down. After that he respected her too much to try again.

Alexis had spent her long life avoiding making ties to people, from making friends and being welcomed into family. But Tony Stark clearly didn't get the hint, and for that she was glad. Because she had a friend, a best friend. She had a family, she just didn't know how much that family would grow from just the two of them, and neither did he.


A/N; So that's the prologue done. I have written the next chapter and it is a long one. So thanks for reading hope you enjoyed.