So, I was doing some thinking after reading a story that popped up out of nowhere that I never expected to read. That story was "Acceleration" by The-Chibi-Poe (id: 10473120) which is a Worm/RailDex crossover which I found to be both interesting and great. I highly recommend it and it's been completed so go check it out after this.

I can hear you asking me to get to the point, so I'll do so. In that story, Taylor basically becomes Accelerator from the RailDex series. To those not in the know, Accelerator is a borderline invincible character who is only defeated by his own hubris and a fluke by a certain character (see what I did there?) and later on by prioritizing someone else rather than his own wellbeing. But other than that, nothing could touch him and he is a total sociopath and I love it as his interactions with the rest of the RailDex cast is interesting, especially after the Sisters Arc.

Roundabout here. So, what I was thinking was: what if Harry Potter in an alternate universe had the same powers as Accelerator but in another universe to serve as the "host" as it were. Now, the two I was debating between Marvel and DC. If I were to pull this off in the Marvel universe, it would have to be in the X-Men series in the Evolution alternate universe, the movie alternate timeline, or the original 90's cartoon timeline. All three have their merits as well as challenges posed in each. Evolution is basically the team in high school, the movies are panned, and the original 90's cartoon could be very cheesy at times with period accurate cheese. As for DC, it would have to be either Young Justice or Teen Titans due to the age of the other heroes involved. Same with Marvel, with DC both of these properties based off of the Justice League have their merits and challenges. Teen Titans can have that weird sense of humor while also being serious while Young Justice can be a little more serious at times more than funny in my personal experience.

So, I was thinking of splitting this idea up into two submissions (then again, I can do whatever tf I want, so…) and decided on doing the X-Men pilot first due to a formula being there that can work if done right similar to the stories written by DZ2 or Quatermass with a bit of a different opening due to the recent Fox buyout by Disney. So, don't be surprised if you see a pretty much copy and paste intro from this when I do that second submission. Well, to an extent that is. While I don't think it needs to be said, but this is going to be an AU!HP for those who might be confused by any of the things in this story. So, let's get this show on the road.

Disclaimer: I own nothing except my copy of MS Word and my laptop. RailDex (A Certain Magical Index, A Certain Scientific Railgun, and A Certain Scientific Accelerator) belongs to Kazuma Kamachi, Harry Potter belongs to JK Rowling, and the entirety of the Marvel universe belongs to Disney. I only own this idea. See the forward for the full disclaimer.

XxXxXxX

"Talking."

'Thinking.'

XxXxXxX

For as long as Harry could remember, he could see 'the numbers'. For years, he never understood what they meant in the slightest. In primary school, he finally learned about what numbers were and their general meaning, that being that they add up or subtract from each other to get the desired result. Once learning the basics, he was able to finish the entire math textbook he was assigned at the beginning of the year over the weekend. Unsurprisingly, this shocked both his parents and his teacher. Many of the teachers thought that he was cheating. Of course, they discovered this the hard way when they had him retake what was pretty much what would have been the final test of the year. He completed it in record time that completely astonished the teachers. All the while Harry looked bored. He was excited by how fast he could do it at first, but that faded quickly.

They tried to stump him with higher levels of math until six hours had passed and they had started to quiz him on trigonometry and calculus. Mind you, he didn't understand why the numbers were coming out this way, only that he knew the answers. It wouldn't be until years later that he would learn algorithms and mathematical formulas that actually made up these equations. It was that day that the concept of 'knowledge is power' was instilled in his mind.

Years later, he would be shuffled from school to school due to fights and just get expelled for being bored with the assignments that teachers would assign and not doing them, walking out of class to do other things. He found himself more often than not on the rooftop playing handheld console games rather than doing class-related items as at least there was an unseen chance algorithm running that kept him guessing. Sure, he would eventually figure it out, but it at least provided some kind of challenge to him.

His parents kept sending him to different schools until that school sent him home permanently. His two records of tenure, longest and shortest respectively, was six months and two weeks. Then came the boarding schools, the same thing happened. The biggest annoyance the instructors had to put up with was the fact that he outright refused to wear the stuffy uniforms. Don't get him wrong, he liked the whole 'sharp dressed man' aspect, but the uniforms were not fitted and therefore were scratchy, chafing, and tight wastes of cloth. He would wear the uniforms for a whopping one instance for ten minutes before ripping them off to wear what he was comfortable wearing.

This went on for years, much to his annoyance and his parents' worry. That is, until his thirteenth birthday. It had been an average midsummer's day in London. He had been walking down the street when all of a sudden, the correlation between the numbers he had been seeing for years and how to manipulate them had suddenly made sense. Like a switch had been flipped in his mind. He picked up a small pebble and glanced at it. He knew from the numbers he was seeing the mass, current weight, and current velocity of the pebble. He threw it and saw the velocity change. He then got an idea: why not change the velocity to go even faster?

He picked up another pebble and flicked it. In his mind's eye, he changed the velocity from zero, to almost a thousand feet per second. The pebble hit a tree and instead of bouncing harmless off of it, it not only pierced the tree but caused it to shatter into a thousand splintered pieces of kindling. At that moment, he got a wide grin. His life suddenly got more interesting.

From then on he started experimenting with this new power. The first thought that crossed his mind was that if he could affect objects, why couldn't he affect himself in the same manner? So, he started to experiment in that fashion. The first thing he constructed a type of passive barrier on himself that would reflect anything thrown at him by instinct alone. To pull this off he went to batting cages and allowed balls to be pitched at him until he could prevent them from hitting him, following up by reflecting them away and then reflecting them on the exact trajectory with the same or faster speed at which was sent at him.

There was one major flaw with this though, as soon as he instinctually reflected everything, he couldn't turn it off. Meaning, he no longer had any physical human contact with anymore. Not that it bothered him any, he didn't really like people, in general, touching him. After all, since he kept to himself and didn't really interact with anyone. He kept going on like this until one day when everything changed. Well, at least his scenery that is.

It was an average day, just like any other. The cars in the bustling suburb of London were zipping on by, the birds were chirping… and he hated it. So, he canceled out the sound that they were emitting to get a wonderful sound of silence. He didn't have his music with him today, so silence would have to do. He was walking to his house from the small creek that he experimented with his powers at. As he walked back, being that he was muting the outside world out, he couldn't hear any of the cars zipping through the very busy intersection that connected the two parts of town, specifically the more rural side which was more mansions and manors than farmland these days, and the shopping and more 'town-y' side of town where a large portion of shops and restaurants were located as well with housing.

Being a law-abiding citizen, he waited to cross until the signal changed. While Johnny Law couldn't do anything to him now that he could control all vectors of any kind of matter (although mastery was a different matter altogether), but it certainly would be annoying more than anything else. He stepped off of the sidewalk and into the street as the light changed and the crossing light flashed. While in the middle of the intersection he felt something hit him. It wasn't like he got slapped or anything, but nudged slightly; like he was pushed lightly before he sprung back. Turning to see what had invoked his annoyance, and his vectors, he saw a car wreck a good hundred meters away. The wreck itself was nothing significant, but the vehicle, an SUV, was on its hood and all of its glass was shattered. All around Harry was a bunch of shattered glass except for the void that was s his personal bubble of automatic vector deflection. It was then it dawned on him that he had not only stopped an SUV running full speed toward him, but he had also deflected it automatically without thinking about it to a fair distance. The accomplishment made him ecstatic. However, it did not appear that the civilian onlookers did not share his sentiment at the moment. Harry, though, did it care. He just went home with a slight skip in his step.

It didn't take long for his parents to find out about this little escapade. After all, there was someone there recording video of the event as part of their vlog livestream and the clip went viral to the point where it made the regional news headlines of 'teenager throws car', or to that extent. There were even two that directly called him a monster for hurting the kid that was in the car despite the fact that the video directly showed that the SUV would have run him down at full speed that would have left him a bloody smear on the road if it wasn't for his vectors.

The shouting match that erupted when his parents got home was epic in the sense that he completely muted them out to the point where his father threw a pan at him only to have it reflected out the window at high speeds. Don't get him wrong, he tried to justify himself, but why should they believe a problem child that's only caused them nothing but trouble. The only words that he got were that he was a mutant and that he was barred entry from the house ever again. He wasn't even able to say goodbye to his kid sister who was the only one who knew his secret and had kept it one all this time, a miracle for a kid her age. And so, he was kicked out onto the streets with nothing more than the clothes on his back.

He wandered the streets for weeks eating table scraps from restaurants when the people that ordered left. He pickpocketed one rich guy one day because he had a plan, he was going to upstate New York. Apparently, there was an institute run by a mutant named Xavier that took in people like him. Since he had nowhere else to go and had no real direction, that's what he did. He stowed away in an airplane headed towards JFK airport, hiding in the cargo bay using his vectors to keep himself warm and breathing. Once they reached altitude he snuck into the cabin and sat near the middle of the plane and took an empty seat. The flight was boring, given that the flight itself was almost full allowed him to blend into the crowd.

Once they landed he left the airport and decided to do a little sightseeing, after all, he was in a new place and he lived in a small town filled with mostly the upper class. So he made sure to see Times Square and the Chrysler building as they were icons of New York. But there was a new iconic sight to see in NYC, that being the new Stark Tower. Supposedly it ran on a renewable generator created by the man behind Stark Industries, Tony Stark. That's when life changed for the young man once more.

While he was walking away from the newest icon in the city, a burst of energy shot out of the top of the tower. People weren't really shocked, meaning that this kind of thing happened regularly in the city to not warrant outright panicking. But then the beam opened a portal in the sky. He didn't have his vectors moving sound away, so he could hear their murmurs of concern. But when the monsters on what looked like hover skids came out and started firing on the crowds of people gawking at the hole in the sky with energy weapons did they start to freak out and seek shelter.

As for Harry? Well, he got a bit of a malicious grin. After all, when would he have the chance to test out just how powerful he was against live targets who completely intended to kill him? He already saw Tony Stark's Iron Man blasting holes in these… aliens, so why shouldn't he?

He picked up a discarded penny and flung it at an alien, manipulating the vectors so that it traveled twice the speed of sound. It impacted the alien's skull with a squelching sound that was sickly satisfying which sprayed its purple blood all over its comrade. The craft that it was piloting crashed down into the rubble of the street, killing the other occupant upon impact resulting in a satisfying explosion. He saw another one and grabbed a car's door, manipulating it to rip it off of its hinges. He threw at extremely high speeds to slice right through the armor and bodies of several aliens which left the car door buried in the concrete wall of a skyscraper like a knife stuck in a tree stump.

Seeing that these 'superior' aliens were just as vulnerable as your average human and just as squishy, he stomped down and sent chunks of solid concrete at several hundred miles per hour into the sleds the aliens were riding on. The impact either threw them off course and crashed them, or outright caused them to explode. Harry sent whatever he could get his fingers to touch to manipulate their vectors to kill the aliens. Of course, this didn't go unnoticed. It didn't take them long to figure out that their army was dying at an accelerated rate in one area. They started to swarm the singular human standing in the middle of devastated cityscape who was grinning and cackling like a madman.

They started to bombard him with those energy weapons of theirs. This got him excited, after all, this was his first experience with the physics behind energy weapons. Oh, it was glorious. To him, it was like sticking a fork into an electric outlet, except without the whole 'getting electrocuted' part. He allowed the bolt to hover right in front of him while he analyzed it, confusing the alien that had originally shot it. That didn't last for long though as the bolt was sent back from whence it came, throwing the alien off of its glider-thing with a larger impact than what was originally shot.

Seeing that another of their alien buddies were killed, they all started to fire at him all at once. Something that didn't last long and something that they immediately regretted as each of their energy blasts were sent right back to whoever shot them at much faster speeds than what they were fired at. They started to strafe him, but that didn't help them at all since he had already calculated their trajectory and sent it where they would be when it would be reflected back. It wasn't even hard as they all followed a pattern, one that was created by some sort of hive mind as they all acted the same and didn't act as individuals. So predictable.

The intelligence behind this must have instructed them to stop firing at him, because they started to charge him, leaving the safety of their hover sleds to attack him head-on. A foolish gesture. This bored Harry. At least before with the energy weapons, it had been interesting and exciting, but this was just boring and routine. They tried to pummel him with their fists but ended up in dead, crumpled heaps hundreds of feet away. The most interesting thing that they tried to do was try and stab him with the bayonet blades that were on the bottom of their guns, but they used the same energy source, so the most interesting thing about them was how it worked in keeping that energy attached. The answer was magnetism.

Eventually, these aliens got smart because they stopped charging him outright and just acted to avoid him like the plague. In fact, he had to start provoking them to get them to fight him. Since they stopped trying to kill him, he got bored again. So, he wandered the streets of New York killing every alien he saw. That is until he saw what could only describe as the unholy marriage of space slug and Giratina from Pokémon. It came flying down towards a specific intersection. It dove towards the intersection. Unexpectedly, it came to a grinding halt at a single point and flipped over. This interested Harry, so he started to walk towards where the creature had landed.

It didn't take him long to reach it, adjusting the vectors for the friction and force he produced while walking made a simple stroll to look like he was running at full speed like an Olympic sprinter. When he arrived, he saw the most colorful cast of characters he'd ever seen. The most obvious person on the group was a bully, green man that was angry; a while back he could have sworn there were APB's out on this guy. Then there was the man in blue with a white star on it who bore a shield with another star and the color scheme of the USA; this man was the fabled Captain America who had disappeared almost fifty years ago and had recently been seen in various areas of New York and said sightings posted on the internet. There were two other humans, definitely spec-ops based on their attire and they wielded weapons not suitable for an alien invasion. The man had a bow while the catsuited woman had a pistol; nevermind the fact that these enemies had energy weapons. The next one was the most well known 'superhero' despite not having any powers of his own, that being Tony Stark's Iron Man dressed in his red and gold armor. Finally, was the oddest of the bunch, that being a man wearing what some might consider Viking cosplay wielding a hammer.

The aliens didn't really wait as they started to attack the group. A few attacked Harry. The group looked on in horror thinking that a teen was going to be killed by energy blasts only to be baffled that they didn't hit him, but were reflected with deadly accuracy.

"Again?" Harry asked with extreme disinterest. "I thought that you learned that won't work. Such mindless beasts."

"Kid, get out of here!" Captain America shouted.

"But it's so much more… interesting over here."

"Look out!" the one with the bow shouted.

Harry moved to the side to see a pike miss his head. He grabbed it one-handedly and pulled the wielder forward and grabbed the alien by the skull. Much to the team's surprise, Harry was able to lift it up with a single hand, unaware that he was using his vectors to manipulate the gravity surrounding the alien. Harry cocked his head to the side. "You'd think they'd learn by now," he lamented, more out of annoyance primarily because they were being predictable again. He plunged his hand into the alien's chest so that the fingertips pierced through the armor and dug into the skin enough to draw blood, kind of like a tiger's paw. He then got an idea, an awful, wonderful idea. He smirked and stated, "You know, I wonder what would happen if I reversed the blood flow in its body suddenly." Harry manipulated his vectors and caused the blood flow to immediately reverse as soon as the heart beat next. The face of the alien bulged up like some sickly created meat-sack balloon before exploding in a shower of purple gore. "So that's what happens," Harry simply stated before tossing the alien corpse aside.

To say that they were shocked was an understatement. They even dismissed the fact that he didn't even have a drop of blood on him despite them now knowing that he had redirected all viscera away with vectors. He turned to look at the colorful group of people no more than a stone's throw away and all but two of them looked slightly unnerved. That being the jolly green giant and the guy with a hammer.

Of course, the aliens, being the apparent showmen that they were, decided to choose that moment to start emerging from the portal in the sky and started to swarm the group. And since Harry was in the crossfire, they started to swarm him too. Seeing the massive swarm of aliens riding alien skids or sleds he grinned. Well, they were attacking humanity, and he was human too, why shouldn't he join in on the fun in killing the aliens?

Harry stomped into the ground and a shockwave formed around him as concrete chunks rose up out of the ground. Not waiting, he sent them towards the aliens, impaling them where they stood with the cement spears, killing them instantly. And they decided to send more of those giant beasts. Well, those looked like fun to kill. Seeing that the kid wasn't in any danger, Stark decided to carry on.

"Call it Captain," Stark said.

Captain America turned to look at the giant portal (sans the now falling aliens Harry killed) and the aliens coming through it. "Alright, listen up. Until we can close that portal, our priority is containment. Barton, I want you on that roof. Eyes on everything. Call out patterns and strays. Stark, you got the perimeter. Anything that gets more than three blocks out, you turn it back or turn it to ash."

Barton looked at Stark and asked, "Can you give me a lift?"

"Right," Stark replied. "Better clench up, Legolas." Stark took off with the archer to a nearby rooftop, then flew off to do his assigned duty.

"Thor," he addressed the Nord. "I want you to try and bottleneck that portal. Slow them down. You got the lightning. Light those bastards up." The Nord twirled his hammer around until he threw it while holding it, flying away. He turned to look at the woman. "You and me, we stay here on the ground. We keep the fighting here. And Hulk?" The once timid sounding man turned to look at him, "Smash." The beast of a man smiled and leaped off the ground, grabbing an alien before launching him into another. No matter what the aliens did to him, it seemed like it didn't slow him down in the slightest. The Captain turned to see that Harry was standing there. "And kid? See if you can get out of here, this is no place for you."

Harry turned to see the portal emitter. Well, that had a bunch of math flying around it and it was interesting. He turned to the superhuman and gave him a two-fingered salute, not to be confused with the bowman's salute, and manipulated his vectors to jump into the air to land on one of the passing sleds. No, you know what? Let's call them speeders. He killed the gunner in the back by punching him so hard, well using the vectors to amplify the force of the punch to liquefy the alien where he stood; all that was left were his feet. He casually walked over to the pilot and manipulated his muscles to pilot the speeder in lieu of actually piloting it.

It didn't take him long to get the alien to pilot the speeder to Stark Tower. He pulled up near the machine, and then promptly killed the alien where it stood as thanks for ferrying him there. Before it fell, he made sure to file away the math involved with the anti-gravity generators that were on the speeder because there was no way that these were flying with normal lift forces. As he stepped off and watched the speeder tip over and fall to the ground, he noted that there was a man laying on the ground near what looked to be a generator of some kind.

As he approached he saw that there was math flying all around the cube in a sphere, but it was different to what was in the sky. Therefore, it was something different. He placed his hand on the surface and his vectors immediately pushed back against him. Slowly, he started to manipulate it once more, poking and prodding at it to get it to open up. It was interesting. It was an equation that he had never encountered before. He stripped away all of the 'complex' 'coding' so that it was at its base elements of basic math. He rearranged his vectors to pry it open. It was slow work. When he thought he had solved it, the machine itself decided to throw a loop and reset everything. But there was a pattern, and he was getting it down.

By the time he had gotten it a hand's worth of space open continually for a good few seconds, he reached in and touched the cube that the adults were talking so much about. He was microns away from actually touching it, but he felt the absolute power radiating off of it. Equations upon equations running in his head, all in different sequences than he had ever seen before. But there was one thing that was being brought to the forefront of his mind, and that was the Einstein-Rosenberg Bridge, a theoretical construct that could create rips in space-time to allow one to travel an almost infinite distance away from the starting point. But just as soon as he filed away that information, he was jostled from his thoughts as someone yelled 'kid' at him.

He instinctively turned to see the redheaded woman from before, but before he could stop himself, his mind wandered for a split second; said split second was all it took literally repelled away from both the machine and the cube and into Stark Tower itself. The next thing he knew, it was all blackness. And for once, it was nice not to think anything.

XxXxXxX

In the aftermath of the destruction that happened in New York, there were many questions being asked. One of the largest ones by the civilian population was that humanity wasn't alone in the universe. The one that was on the minds of the Avengers was who the kid was.

"So, any thoughts?" Stark asked as they gathered around a table in the tower. Thor had long since bound his brother who was in no fighting mood at the moment from being smashed relentlessly by Hulk.

"He seems to be some kind of mutant or something," Clint offered. "Freaky powers and all that." He got a look from both Banner and Thor. "But you guys are cool."

"I agree with the archer's assessment," Thor added. "He is most unusual. He was able to touch the Cube with no ill effects."

"Which is impossible," Steve chimed in. "I've seen what happens when a human touches that thing."

"That's because he didn't touch it," Tony interrupted that line of thinking.

"And how do you know that?"

Tony slapped down a tablet which showed the entirety of the scene from before. "While Loki was able to keep JARVIS from doing anything to stop him, he was still able to observe. According to different angles of vision, and JARVIS's processing power, I was able to determine he was mere microns from actually touching it."

"Exactly, 0.001 microns, sir," JARVIS chimed in to interrupt his creator.

"At that point, we're literally splitting hairs, close enough," Tony snapped. Regaining his composure he continued, "He was muttering under his breath as he was. JARVIS has taken the liberty of mapping his mouth movements to map exactly what he said, and it's strange. Here's a transcript."

On the screen, a mathematical formula appeared. It was beyond complex, and it wasn't even organized as one might see on a professor's chalkboard. It was a single string of numbers and letters with no real, concrete context. Bruce put on his glasses and looked at the string. "This looks like a formula for faster than light travel," he commented.

"How would that even be possible?" Steve commented. "Didn't Einstein say something akin to that the speed of light is the fastest anyone can go?"

"It's more like a guideline," Thor replied. "The Bifrost allows quick travel between the Realms, Realms which are many lifetimes away at that speed."

"As interesting as this is," Tony interrupted. While he was fascinated by the Bifrost, there were other things to take care of at the moment, "what do we do about the kid?"

"I believe I can help you out with that," a posh British voice interrupted them.

XxXxXxX

It was a long time before Harry woke up again. But for him, one moment he was looking at a cube, the next he was waking up in a fluffy bed, something he definitely didn't expect. He sat up and looked out the window and saw that instead of a cityscape, which he was in before, he was now in the middle of nowhere with trees around the premises.

"It was about time you woke up, you've had quite the trip," a very British voice like his own greeted him. His eyes snapped from the window he was looking through to a paraplegic man who looked way too young to be bald, at least not through shaving one's head. He sort of looked like Sir Patrick Stewart, now that he thought about it.

Harry's eyes narrowed. "Who are you? Where am I?" he demanded.

"My name is Charles Xavier and you are on my property, a school for extraordinary pupils such as yourself: Mutants," he explained. "As for your actual, physical location, we are in upstate New York. Not that far away from where you encountered those strange, alien-like beings."

"They were definitely aliens," Harry confirmed. "Too uniform, their species is like that not unlike humans." He caught himself as he rattled off random information on the spot. "What do you want with me?"

"What do I want?" he parroted. "Nothing."

"I know when I smell BS."

"I don't want you in the sense you think I do. What I want is to offer you a place in my school, a place to learn about your powers and how to control them."

"I already know how to control them," he countered. "I know how to use them."

Xavier raised an eyebrow, "Surely there is nothing else you might wish for? Friends? A safe place to live?" That last part caught Harry's eye. "I hope you don't mind, but I did a very small background check on you. You're homeless, you have nowhere to go." Admittedly, Harry did come here in the first place to find a place with those like him. But this was a school, not a home for him. Xavier must have seen that, because he continued, "If you wish to leave, I will not stop you. I will leave the campus open for your perusal. I would advise talking to my other students and instructors here. Perhaps they can convince you to at least stay here for a time."

And with that Xavier left, leaving many questions with the young Mutant.

To be continued...?

XxXxXxX

And with that concludes another pilot. So, that was a bit interesting. Now, you might wonder why the final New York battle from Avengers was here, well, I wanted a bit of excitement here. That, and since Disney pretty much owns the X-Men again, I thought it might be interesting to see if I could do a little of universe merging. I think that might be a little fun.

So, what do I want to do in particular with this story? As you read, Harry is Accelerator from RailDex at least in powers. The only person that's like him is Jean Grey, and she's purely psychokinetic rather than what Accelerator does. And no, that's not a pairing set up. One of the central conflicts will be the whole mutant thing in Marvel as well as the Infinity Stones, something which will build up to Infinity War. The endgame is mega-OPness and this is the interesting journey to get there.

I briefly mentioned pairings before. I have none. There are a few I was thinking of based on his age group. Kitty Pride and Rogue are two that sort of stand out, primarily their X-Men: Evolution variants. Perhaps even Jubilee. It's something that I would have to keep in mind. One thing that this would not become is a harem!fic because that's just not how I see this one working out. If someone wants to try and run with this idea and do that, they can give it a shot, but I won't.

As you guys may have noticed, this came off pretty hot off the heels of my previous entry here, that's because I had been sitting on this for a while and finally finished it after some writer's block after figuring out how I wanted to end it. It took a while, but I got it done. That being said, that whole moving thing still applies and most of this was started before that. I do have a few more ideas that I want to try and do, so I have no idea what the next entry will be.

So, what did you guys think? Like it? Hate it? You should know what to do by now.

Until next time!