Disclaimer: I do not own Harry Potter, the X-Men or any of the other franchises which might make an appearance in this story. I make no money from this or any of my other fanfiction stories.

Author's Key:
"Verbalized Communication."
~Telepathic Communication.~
'Thinking to oneself.'
"Magically Empowered Speech."
["Parseltongue, or another Magical Language."]
["French or another foreign language."]

xXx Sunday, September 1st, 1991 xXx
xXx Sorting Ceremony, Hogwarts Great Hall xXx

"Potter-Grey, Jean!" Minerva McGonagall called out from behind her sheet of parchment of paper with the list of First Year Students' names on it.

As soon as she said it countless murmurs broke out inside the Great Hall as people craned their necks at this mysterious girl who shared part of her name with the vaunted Boy-Who-Lived. However, they weren't the only ones surprised at hearing this name called, as one Harry James Potter whipped his head around to look at the Deputy Headmistress with his mouth hanging open in shock.

He was thus able to watch as a small girl, who was only a few inches taller than he was, with long stunning crimson hair and the same green eyes as him, walked up to the stool and tried on the Sorting Hat. As he was watching this happen he heard a jubilant voice inside his mind say ~Yes Harry, it's me. I'm real!~

xXx Flashback xXx
xXx Friday, June 14th, 1985 xXx
xXx #4 Privet Drive, Little Whinging Surrey xXx
xXx Cupboard Underneath the Stairs xXx

~It's not fair!~ Harry heard a voice inside of his head say in a cross manner. Unfortunately he saw nor heard anyone around him, and he knew that his Uncle would be most displeased if he started talking to people inside of his head, so Harry decided to say nothing at this time.

~Harry, you can talk to me… just do it by thinking what you want to say instead of speaking it,~ the voice told him reassuringly.

Harry frowned momentarily in confusion, before thinking ~Um… who are you?~

~I'm your sister Jean. It's a pleasure to finally have a reason to talk to you. I just can't believe what those horrible people are doing to you. Mum says what they are doing would get them arrested here in the States,~ Jean stated conspiratorily.

~Oh, well it's not so bad. It gives me time to myself so that I can think is all,~ Harry said in as rational a voice as possible.

And just like that, Harry figured that he had gained his first ever imaginary friend. This friend would go on to become a rather prominent fixture in his life from that day forward.

xXx End Flashback xXx

"GRYFFINDOR!" The hat cried out. Jean lifted it off her head, placing it back on the stool, turned and gave Harry a wink, before skipping down to the Gryffindor Table.

When it was Harry's turn to sit under the hat, almost as soon as the hat was placed on his head he heard an amused voice in his mind saying ~You have a most interesting sister Mister Potter. It's not every day someone threatens to toss me in a woodchipper unless I sort their brother into the same house as them.~

~Um… I'm sorry?~

~Oh, not to worry, it isn't like she was the only one to make such threats. She was just the one whose threat would have been the most disastrous for me. Miss Tonks threatened me with something called C4… whatever that is. The Greengrass girls each threatened to hex me, and Miss Granger threatened to lecture me to death… And those were just the more notable ones. You sure are a popular young man.~ the hat complimented.

Harry blushed under the realization that so many girls wanted him in their house.

~Now, while admittedly you would do well in Slytherin, it is clear that in order for you to truly thrive because of your abilities, you are going to need the close support of your sister. Therefore I can only place you in…~ "GRYFFINDOR!" The hat shouted the last bit of information out loud for the entire hall to hear.

Harry quickly removed the hat and placed it on the stool as he rushed over to the table where his sister was seated. Hermione Granger was seated next to her, and the two girls looked at each other momentarily before Hermione scooted down a seat to make room for Harry between the two girls, much to his embarrassment.

Once he was seated, his sister latched onto his arm and said "I wish we could have grown up together, I've missed so much."

Harry blushed before saying "We're together now, that's what counts."

Jean nodded in agreement and returned her attention to the sorting. It didn't take particularly long for the sorting to finish. However as soon as Ronald Weasley was sorted into Gryffindor he walked up to the spot where Harry was sitting next to Jean and rudely demanded "Budge over. That's my best mate you're crawlin' all over."

As soon as he said that Hermione rolled her eyes. Jean's eyes however narrowed as she turned her head to look at the boy, "Excuse me, but did you just tell me to allow you to sit next to my brother? The brother I haven't seen since I was nearly two years old?"

"Don't be daft. Harry Potter hasn't got a sister," Ron stated in his best authoritative tone of voice, which really just made him sound stupider.

"Of course he does. Didn't you hear the name that was called when she was sorted? It was 'Potter-Grey, Jean' that means that her father is also Harry's father, it is just their mother's who are different. Don't you know anything?" Lavender Brown commented drolly.

"Look… Ron was it? You might as well find a different seat. None of us are rearranging our seating arrangements just because you want a spot next to Harry," Hermione said in a dry tone of voice.

Ron sighed and went to find a seat, just as the Headmaster announced the start of the feast.

xXx After the Feast xXx
xXx Gryffindor Girls Dormitory xXx

"So, Jean… what's it like being the sister of the Boy-Who-Lived?" Parvati asked excitedly.

"The who's-it-what's-it now?" Jean asked confusedly. She had of course heard the mental background noise mentioning that term, but she still wasn't really sure what it actually meant.

"Oh, that's just what everyone calls Harry because he survived some curse that is supposed to be unsurvivable when he was one," said Hermione.

"Oh… does that have anything to do with the general messiah complex that people seem to be sporting in regards to my brother?" Jean asked.

"Yeah, it has to do with the fact that shortly after he survived that curse, the reigning Dark Lord at the time disappeared off the radar. Most people think he's dead," Lavender admitted.

"Was there a body?" Jean asked.

This caused all three of the other girls in her dormroom to frown in confusion. "If there wasn't a body, then odds are he isn't dead. Food for thought girls, goodnight."

xXx The Next Morning xXx
xXx Boys Dormitory xXx

Harry awoke to the realization that something was off. Squeezing his hand he heard a feminine voice give off a subtle moan due to the small but obvious mound of cloth covered flesh that he had just squeezed.

Slowly opening an eye, the first thing he saw was a rather unruly mop of bright red hair sprouting from the head that was laying on his chest. He easily recognized the hair as belonging to his sister. Slightly panicking now about their rather compromising sleeping position, Harry began mentally calling out to her in an effort to wake her up.

~Harry, cut it out, let me sleep. This is nice…~ Jean complained mentally.

~But Jean, what if somebody sees you in here?~ Harry asked.

Jean lifted her head slightly so that she could glare at her brother, ~Do I look like I care?~ with that said she lowered her head and went back to sleep, leaving Harry to feel completely uncomfortable.

As it would turn out, nobody would even look crossways at the fact that Jean had decided to spend her nights in her brother's bed. Apparently the conventional wisdom of the Wizarding World was that girls could choose to spend their nights in a boys bed, but the same does not apply to boys. Who knew?

There were also apparently not a whole heck of a lot in the way of incest taboos in the Wizarding World either apparently.

xXx Later that Day xXx
xXx Great Hall, Lunch Time xXx

Harry and Jean sat themselves down at the Slytherin table opposite from two brunette girls. This caused the entirety of the table to pause whatever they had been doing and turn and watch what was unfolding near the middle of the table.

One of these two girls was dressed in Ravenclaw color robes, and the only reason that she was even allowed to sit at the Slytherin table during meals was because the other girl was her sister and a member of Slytherin house.

The girl in Ravenclaw robes looked from Harry to Jean, and then glanced at her sister with an amused grin on her face waiting to see what would happen here. Of course both sisters knew all about the Potter siblings thanks to their contacts, but it would be amusing to see how this played out none the less.

"Yes?" the Slytherin sister inquired.

"Oh, I just wanted to meet the two girls who threatened to hex the hat in order for me to be in the same house as them," Harry said in an amused tone of voice.

This had the predictable result of causing the Slytherin sister to blush, she never blushes, and the Ravenclaw sister to burst into giggles. When her giggling fit calmed down she said "Obviously our threats weren't good enough."

"Well, to be fair, I threatened to toss the hat into a wood mulcher," Jean countered.

"Ouch…" both sisters said with a cringe.

"Some girl named Tonks threatened the hat with some C4, that probably would have won if the hat knew more about recent advances in Muggle Military Hardware," Harry said amusedly.

"So, you two are the Greengrass sisters. I would ask why you wanted me in your respective houses, but judging by the general reaction I am getting from people in this school, it seems to be fairly obvious," Harry said morosely.

"Oh, it's nothing like that Harry. We aren't at all interested in that boy-who-lived drivel. Unfortunately we can't really talk about our real reason for wanting you in our house in current company," Astoria stated in a comforting tone of voice.

Jean and Harry looked at each other momentarily before Jean established a mental link between the four of them, ~Would this be an easier way of talking about it?~

~Oh! You're just like the Professor!~ Astoria said excitedly.

~Who?~ Harry asked.

~Professor Charles Xavier of the Xavier Institute, he's the one who taught us about our powers. Astoria… she can phase through solid matter among other things. As for me… well there is a reason all my skin except for my face is covered,~ Daphne explained.

~You're not sick are you?~ Harry asked.

~No, nothing like that. It's just when I touch people I cause them to fall unconscious and absorb some of their memories, and if they are like us, their powers as well,~ Daphne stated.

"Oi Harry! Why are you sitting with these slimy snakes?" the annoying voice of Ronald Weasley interrupted their mental conversation.

Jean slowly turned her head around to look at the boy before saying "Are… you… for… real?"

"Huh?" Ron asked in confusion, while many of the Slytherins were openly blinking in surprise that a Gryffindor of all people was apparently defending one of them from a fellow Gryffindor. That just wasn't how things were supposed to be done at Hogwarts.

"Did you really just stereotype these two incredibly nice girls based on the dormitory that they were placed into?" Jean asked for clarification.

"For the record, I'm actually in Ravenclaw House…" Astoria commented.

"Not helping Story," Daphne chided.

"But they're snakes… there hasn't been a Witch or Wizard to come out of Slytherin House who hasn't gone bad…" Ron protested, completely missing the death glares that were now being leveled at him from virtually the entire house.

**BOP**

"Watcher, Mincemeat. You must have balls of steel to say stuff like that in this close of a proximity to the entire House of Slytherin," a voice said from behind Ron as she slammed a fist down on his head.

"Anyways, your entire point is completely false. My mum was in Slytherin House and is one of the nicest people you could ever hope to meet… then there is the fact that I know for a fact YOUR grandmum was in Slytherin as well. Talk about being a hypocrite," the girl continued explaining.

"Huh?" Ron said intellectually.

"Watcher kiddies, I'm Tonks, pleasure to meet ya," the girl said as she sat herself down next to Harry.

Jean scrunched up her face at the girl and asked "Auntie Raven?"

"Oh bugger, could you not do that, Jean?" Tonks complained.

"Raven? As in Raven Darkholme?" Daphne asked as she gave Tonks an intense look.

"Oh buggering hell…" Tonks complained, "I see that Chuck is recruiting younger every day…"

Daphne smirked and said "Actually… it has more to do with the fact that Mum had you listed our Godmother. I guess she forgot to send you the memo?"

Tonks blinked before asking "And you would be?"

"I'm Daphne Greengrass, this is my sister Astoria Greengrass. It is a pleasure to finally meet our Godmother" Daphne said enthusiastically.

"Greengrass? Alexis' children?" Tonks asked.

"Yep," Astoria added in helpfully.

"Oh lovely," Tonks said.

"Why… are there three Gryffindors, a Hufflepuff, and a Ravenclaw at this table?" a sneering voice inquired.

Harry and Jean looked up to see the Potions Professor and Head of Slytherin House standing behind Daphne. Jean suddenly developed an intense frown before the Professor staggered back as if he had been punched in the face.

"It is rude to read someone else's mind without asking their permission first, Professor." Jean chided in a voice loud enough that the entirety of the people at the Slytherin Table could hear what she had just said.

This caused several gasps to run all up and down the table due to the fact that people had witnessed Snape stagger as if struck by an invisible hand, which was a side effect of being violently repulsed from a legilimency probe. Of course with legilimency being illegal to perform on minors without the consent of a parent or guardian, well, word would soon be circulating back to the parents of the Slytherins about what Snape had just done.

Even if the first impulse of the members of Slytherin House was to not do favors for a Gryffindor, they had just watched as this Gryffindor had defending one of their members from a member of her own house. As such they were willing to look upon her more kindly than they would just about any other Gryffindor before today.

Grunting in annoyance at having been found out by one of the Potter brats, Severus Snape quickly retreated back to the sanctity of the Staff Table.

xXx Tuesday, September 3rd, 1991 xXx
xXx Gryffindor Boys Dormitory xXx

Harry once again woke up to the sensation of a warm body pressed down on top of him with its arms wrapped tightly around him like he was some sort of overly large teddy bear. Opening his eyes, he confirmed that, yes, it was in fact his sister. However, much to his shock and surprise when he turned his head slightly he noticed an additional head of brown hair laying in his bed with him.

"Astoria? How'd you even get in the Gryffindor Common Room?" Harry asked.

Astoria blearily opened her eyes and gave him an annoyed look before saying "Walked through the walls, duh."

~Keep your voices down, talk in your minds,~ Jean complained to them mentally. It was too early for them to be talking so loudly.

Suddenly the door to the boys dormitory slammed open as someone stomped into the room and over to the edge of Harry's bed.

"Jean Eleanor Potter-Grey! What you are doing is absolutely scandalous, now march yourself right back to our dormitory like a good and proper young woman!" the voice of one Hermione Granger hollered loud enough to wake the entire dormitory.

Jean turned her head to give Hermione a glare, when suddenly her eyes began to glow. It took a few seconds for Hermione to realize what was happening, but when her perspective of the room suddenly flipped upside down, she began shrieking her head off. Jean had somehow lifted the girl completely off the ground and flipped her upside down.

Fortunately for Hermione's sense of modesty, she had been wearing a pair of pajama pants with a tucked in jumper, otherwise she would have totally flashed the entire room just now.

Astoria looked up and said "If you wanted to join us, all you had to do was ask. No reason to go all in a huff about it."

Suddenly one of the other boys asked "Who let loose the Howler Monkey this early in the morning?"

Jean righted the girl and floated her back out of the room before saying "Dammit, I was having such a nice dream. Well I guess that it is time to get up."

"Hey, Jean, can you um… teach me how to do that?" Harry asked.

"Sure, no problem. We will work on it after classes," Jean said enthusiastically.