Before we begin, I got the idea by pure accident. That is all.
Prologue
3rd person/outsider/godlike being view
The first thing, we the audience see, is the land of Hyrule, but at the same time, not the land of Hyrule. The reason? This isn't the canon timeline. This History of Hyrule is different, as Ganondorf Dragmire, gained a thought, 'If time travel was involved against the Hero of Time, does that mean there are alternate versions of history of timelines?', which lead to him doing research, and finally discovering, indeed, there is the potential, but no guarantees of it.
On this idea, Ganondorf, the King of Evil and darkness, on a whim, changes the way the timeline was supposed to go, and hunts down three triforce pieces. Normally, he should NEVER have done this. But because of a minor change, the timeline went into a completely different direction. Because of this, Ganondorf eventually gains the complete triforce. Not by going on an adventure or the like, not killing the two wielders or any of that. He took advantage of a few scenarios. Because of the timeline differences, Ganondorf took the Trifoce of Courage from Link when he was in his wolf form at Hyrule Castle, thus Link doesn't have it now. Just a mark with a mere shard of it's original power. After Ganondorf left, he took the Triforce of Wisdom from Zelda, thus uniting it. He then left to the throne room, were he was alone before making his wish, which will change everything to do with him.
Ganondorfs POV (Should stay like this for the most part, after this chapter.)
"Triforce, grant my wish! Combine me with my other timeline counter parts, their future selves, and this timelines future self!" Ganondorf wished for while touching the relic.
Back to 3rd person
Now, normally under normal circumstances, the wish would be granted with no problem, but a 1 out of a 1,000,000,000 happens, the wish works, but the Triforce uses so much power doing it, that it goes into a "Super meltdown" of a sorts. Because of this, the entire land is destroyed by a blast equivalent to a trillion nukes multiplied by a trillion. The realm is just a wasteland.
What happened to Ganondorf you may ask? Well, when the energy was building, for a brief second, a portal was formed underneath Ganondorf as it was a tear in reality, sucked him in, and he went through it entirely. Due to the whole mess, the alternate timelines and futures power, knowledge, and experience is transferred to him, but their bodies are not, essentially meaning that it is still him, just all sorts of different knowledge, power and experience. Of course this is fine and dandy and all that, but due to a few issues of transportation of any kind between verses, Ganondorf's power is limited to 5% of it's original capabilities, given a core of magic to the native verse he is going to (Harry Potter) and deaged to 11 years old.
May 1st, 1991 (This is Ganondorfs birthday in the HP universe, as he appeared here at this date.)
In some random alleyway in London
A golden portal appears, spitting out a tall for his age, 11 year old boy.
Ganondorfs perspective
"Ugh. My head. Where is the moron who hit me in the head with the donkey?" He asks himself. "What the Din?" Ganondorf looks up to see 3 thing:
1: Buildings taller than Hyrule Castle easily.
2: Hundreds of Carriages without horses moving around faster than horses in some cases with bright lights, though they seem to have stopped for some reason.
3: Two weird looking men with Robes and pointed hats looking at him with confusion.
"Who are you kid, and what happened?" Weird guy number 1 asks.
"Uh, who the din are you, why can't I understand you, and why are you dressed up like that, and what the din is going on!?" Ganondorf asks in a confused and slightly terrified tone.
"Sir, we might need to bring this in. Who ever this kid is, released enough magic power in this burst of Accidental magic to knock out power to the Entire city." Weird guy number 1 says.
"I don't think it was the kid. The magic is on a different power level. Though he DOES have magic from what I can tell. Lets bring him in, just to figure everything out." Wizard two says, then knocks Ganondorf out with a stunner spell.
18 hours after the incident, Ganondorf starts coming back to reality. "Din damn it. This is the second time I wake up in a strange place." Ganondorf says.
Ganondorf looks around to see he is in some room, on a bed with some strange contraptions all around him, just there. There is a wooden door leading somewhere, when 2 voices are heard.
"So he is awake." Someone says outside the door.
"Yes he is." The second voice says as they enter the room, one of them dressed the same as one of the guys that found him in the alley way.
"So kid, can you tell us who you are?" The not doctor asks.
Ganondorf, having a bad feeling of revealing EVERYTHING about him right now, would be a bad idea, so just gives his name. "I am Ganondorf Dragmire. Why are you calling me kid? I am not-" Ganondorf looks down to see, he is indeed, a kid. "WHAT THE DIN!?" Ganondorf shouts in his head.
"So Ganondorf, can you tell me what happened today?" The strange guy asks.
"Well, 1 minute I was in the alley way, and the next I am knocked out, and then I am here. That is all I know." You don't even need to a mind reading spell to tell he is being honest.
"Sorry that had to be done, but we had no idea on the state of mind you were in, and your magic could have killed us." The guys says,
"Huh. So that is the strange power I feel in me." 'Not the magic I am use to. Though, if they have adults able to use it in different ways, then they must have a learning center. In fact, it feels like most of my power is locked away. Din that ain't good. If I get into a fight of any sorts, I will have to be careful. And I will have to do research on this world. Good thing the manipulation magic I can use requires very little magic. And it is the magic I use normally. But stuff like my Dead Mans Volley, lightning, among things can't be used now. Farore damn it.' Ganondorf thinks to himself.
"Well, kid, sorry this happened. How old are you?" The guy asks.
Something gives Ganondorf a answer. "11. Why?" Ganondorf asks back.
"So you will be going to Hogwarts for your first year, thought you must be a muggleborn." The guy says.
"I believe so." Ganondorf answers, as he tries to figure out what is giving him these answers.
2 months later
Ganondorf, after that mess, managed to get enough money via bets and gambling, to get 7 years of school supplies (With tuition) for Hogwarts, when the letter came to his house, which was a few trees stuck together and carved out from the inside out.
After Ganondorf finishes reading the Hogwarts the letter, he questions how exactly they could pin point his exact location, when a sudden crack sounds, making Ganondorf look in surprise, to see an old lady at the entrance of where he lives.
"I never thought I would see the day I would be sent to pick someone up that lived in a tree of all things." The old lady says. "Hello there, Ganondorf is it?" The old lady asks.
"Yes, I am Ganondorf Ms?" Ganondorf asks.
"I am Minerva Mcgonagall. I am the Transfiguration Professor at Hogwarts. I am the one that will be escorting Muggleborn students to get their supplies. I need to pick up a few other students before we get the supplies though, as there are a few more muggleborns to get." Minerva says. Ganondorf just goes along with it. He some what mellowed out the past two months with barley any power, but he still is quite easy to piss off, and has no regrets killing you. He just understands it a bit better with everything.
Ganondorf, and Mcgonagall apperate to Diagon Allley, walk to Ollivanders Wand Shope.
Ollivander comes out to see a student and Mcgonagall. After a bit of conversation and confirmation fo Ganondorf being a student, He begins getting Ganondorf wands try. After 30 minutes of trying, he finally gets the wand for Ganondorf. "Entrusting. Very entrusting wand you have their Mr Ganondorf. A Blackthorn wood with a Thunderbird tail feather core. About 12 inches. One of the larger wands I have. You will be a entrusting wizard, that's for sure Mr Ganondorf.
After getting the rest of the school supplies, Mcgonagall beings Ganondorf back to his tree house. "Well, this will be entrusting."Ganondorf thinks as he goes to sleep, Unknown how tomorrow will be.
As far as wizards know, Ganondorf is a human.
Before it is asked, I believe you all should know (It is fucking Harry Potter. If you don't know what happens with the near ¾ million stories of not crossover stories of it on this site by now what happens in the beginning with the descriptions of the Alley way and Letter, please read the original story (Or a summary, or even look it up for fucks sake) to find out. To lazy and seen enough descriptions of it for anyone to have the basic idea.
Also, Ganondorf will have a black kitten (A mixture of cat and kneazle to be exact) with orange eyes wit ha few unique powers.
He can teleport (Not apperate, actual teleportation), spit fireballs (Not to well at the moment. It is a fucking kitten, how can it do any offensive thing well?), and use his fur to shock a person he doesn't like. He is named Gorman. (I suck at making up names.)
He will be shown in the next chapter, as I feel like I want to make a backstory from him, and show some massive differences to Canon Ganondorf, and this Ganondorf. I will also include a few Hyrule Warrior things (Fucking love that game) but they will be MUCH more noticed in a future story. This won't be the only story Ganondorf happens to be sent too. Also, Late but Marry Christmas and early happy New year! I will post a second chapter soon for this story, but not right away. More details will be in the Authors note for the second chapter.
EDIT: I fixed a few things, and did my best to make it flow better. I may have made a few mistakes, but I will fix them when I find them.