Harry Potter: from Legacy to Dursley

Dudley sat in his bed, his head was swimming. Memories mixed and matched, two minds molding into one. At first it wasn't clear who would win but in the end, the older soul managed to take control, the mind of a keeper of ancient magic. This keeper had been experimenting with the stored emotions beneath the castle but when he tried to use them to cast a bit of rare magic to a heightened degree, it exploded and he found himself in Dudley's body. He could still feel the connection to the ancient magic, so it wasn't destroyed by the explosion but he didn't have time to think about that right now. He had been forced into this fat, muggle body. He knew it was a muggle because he didn't get an owl from Hogwarts when he turned eleven. Now, he had recently turned twelve. He was still magical though, he could feel it, that buzz of magic flowing through his veins. He sat back onto the bed and organized his thoughts. His parents hated magic and-

He couldn't finish that thought as he heard his mother screaming for him downstairs, "Duddykins! Come here!"

Dudley got up from his bed and walked down the stairs. Sitting in the kitchen were his mother, father and cousin. Petunia, his mother, held a letter in her hand, a Hogwarts acceptance letter.

She was crying.

"Are you… okay mum?"

"My duddykins is magic! This is righting the wrong! I am so proud of you… we will go shopping for your supplies immediately!"

"I thought you hated magic?" Harry looked dumbfounded.

"Well, most of your kind- I mean, most wizards are arrogant and nonsensical but our duddykins will make a big change. He will make the magical world better!", Mum said through tears. Intrigued, he held eye contact with her and tried legilimency. Dudley saw Petunia's sister getting her acceptance letter, Petunia writing to the headmaster but being rejected because she wasn't magic. He cut the connection and glanced at his Dad, who was standing there, as confused as Harry about Petunia's sudden shift in attitude.

"It says here that a professor will come by tomorrow and will train our Duddykins up so that he isn't behind the other students, tomorrow, at Duddykins' birthday. He will work with him for the rest of the summer to get him up to speed. That sadly means he won't be here for the Mason's visit but it is important that he doesn't lack behind the others. Our Dudley must be the very best!"

Dudley smiled at Petunia, "I will try my hardest to make you proud"

"Oh, I'm always proud of you, my darling", she hugged him. As he watched the confused Harry from over his shoulder, he mouthed 'come meet me in my room'

When Petunia let him go, he slipped up, into his room, ten minutes later, Harry came too.

"What do you want Dudley?", Harry asked with venom. He couldn't fault him. What Dudley saw in those memories wasn't very nice.

"I wanted to excuse myself for how I've treated you. I have no reason I could possibly give that would excuse my behavior but I wanted to- well, make things right? If you could ever forgive me" Dudley looked him in the eyes with a sad smile.

"I- What are you planning? You aren't like this, so… self reflected"

"Not planning anything, just want to maybe get an actual cousinly relationship going"

"I- I will give you a chance but if you ever try to bully me again, I will hex you to next tuesday"

"Understandable", Dudley nodded and let Harry leave. As the day continued on, Petunia kept fussing over him. It was getting annoying very fast but finally, night fell and Dudley knew everyone was asleep, so, he sneaked out of the house and apparated to his old home. It was abandoned but he still found the key he had left under a floorboard, his Gringotts vault key.

He apparated again, this time to Gringotts proper and walked straight towards one of the goblin tellers, "Hello, I would like to change the ownership of a vault, I have the key right here"

"The password?", he looked at him suspiciously after he saw what vault that key belonged to, the wizard who had killed countless Goblins during Ranrock's rampage and a user of ancient magic.

"The lion roars"

"That is right… well, consider it done, who do you want the vault ownership passed onto?"

"Why me, of course, Dudley Dursley", he smiled. The goblin didn't recognise that name but he wasn't paid to question the customers, so, he took some of Dudley's blood and created a new key, "Don't lose it"

"I won't", he promised and disapparated from the bank back into the Privet drive, where he snuck back into his room and went to sleep.

The next day, he woke up bright and early, skipping down the stairs. Petunia was already there, having decorated the whole kitchen and dining area with streamers and balloons. A chocolate cake was on the table. They partied the whole morning, he opened presents -mostly useless toys- and he even managed to convince Petunia to give Harry a slice of cake, which Harry was grateful for. As the clock struck 12, there was a sharp knock on the door. Petunia got up and opened the door. Dudley couldn't quite understand what they were saying but soon, Petunia came into the house with a stern looking woman in green robes standing there, "Mr Potter", she nodded at Harry, before turning to Dudley, "Mr Dursley, I am Professor Minerva McGonagall, deputy head mistress of Hogwarts and head of Gryffindor house"

"Gryffindor?", he looked at her green robes, he would've taken her for a slytherin.

"Yes, one of the four houses", she seemed to misunderstand his question but he didn't correct her, "Each house holds certain values, there is Gryffindor, Hufflepuff, Ravenclaw and Slytherin. I would've thought your cousin would've told you already"

"Nope, he didn't but good to know", shrugged Dudley, playing dumb, "What values do each of the houses hold dear?"

"Gryffindor values courage, Hufflepuff kindness, Slytherin cunning and Ravenclaw cleverness", McGonagall told him, "They are of course, all of equal importance. Your cousin, Mr Potter, is in Gryffindor, he is seeker on the quidditch team"

"Quidditch? Wasn't that the sport on the brooms?"

"Yes it is, it is quite the game, one I'm sure you will grow to love too", the Professor nodded, "Now, let us go to diagon alley to get your supplies, after that, I will give you a crash course on what you need to know, hold my arm"

He grasped her arm and they disapparated, appearing again, in Gringotts. McGonagall walked over to the teller and cleared her throat, "Mr Dursley here wants to access the muggleborn fund"

"He has an account here", the teller said lazily, his eyes struggling to keep open. He was the same goblin that he had spoken to that night, he must've had the nightshift and was now covering the day shift for another Goblin.

"Really? I guess… wait- let us do a blood test. I am curious now, who is your magical ancestor that you inherited a vault? I will pay for it", McGonagall looked confused.

The teller held out a needle and a piece of paper. Without thinking about it, he pricked his finger and let the blood fall on the paper. It took a few minutes but eventually, the paper revealed only one name, 'Gregory Grey'

The goblin jumped up in terror, "You are- His offspring?"

"And who is 'he' exactly?" asked Dudley.

McGonagall spoke after a minute of stunned silence, "Gregory Grey is a legend. He took down Ranrock, a Goblin terrorist over a hundred years ago. He was said to wield the same kind of ancient magic that the founders of Hogwarts wielded. He disappeared during his seventh year. All thought he died but you, you are his descendant!"

"Was he really all that great?" it was weird hearing about his own legend.

"Yes, yes he was", McGonagall shook her head, "but for now, let's go to your vault"

The two of them and a goblin rode the carts through Gringotts and eventually, arrived at the vault, "key please"

He handed him the key and the goblin opened the vault. The inside was just as he had left it, a mountain of gold -all plundered from poachers or goblins- and several trunks filled with all kinds of stuff, brooms, cloaks, hats, wand handles.

He pocketed a few handful of coins into an extended purse and also let a wand handle slip in there, a blue and white checkered one, before returning to the professor, "Is that much enough?"

"That is way more than enough, that is enough for a few years", she said.

They went shopping for supplies. First, his new wand. He walked into Ollivanders', where the old wizard stood peacefully. He looked much alike to his counterpart from a hundred years ago, a smaller nose, more light eyes, that shone like silvery moons in the dim lighting of the wand shop, but all in all, he seemed to be much like the Ollivander he had met in Hogsmeade after his fourth year when he snapped his wand and needed a new one, "A new first year, professor McGonagall?"

"A second year actually", Dudley corrected, his eyes scanning the high shelves, filled with wands.

"I- don't remember giving you your first wand… did you get one from Jimmy Kiddle's wonderful wands? I keep telling the ministry that his wands are of inferior quality and break way to easily" Ollivander shook his head.

"actually, young mr Dursley here starts his journey as a second year", the professor explained, "the book of Admittance only now allowed the quill to write his name in it, we don't know why"

"Extraordinary", Ollivander said, snapping his finger and a measuring tape came flying out of the back, measuring just about every measurement imaginable, whilst a quill wrote them down on its own. After a few minutes of measuring, the tape disappeared and Ollivander looked around the shop, pulling out wand boxes before shoving them back in. After a while, he found one that he seemed to be satisfied with, "Yew wood, dragon heartstring, 12 ⅔ inches, go on, give it a wave"

Dudley waved the wand and golden sparks flew out, showering them in light.

"A near perfect match", Ollivander seemed satisfied. Dudley handed over the money and they walked out from the dusty shop. Next was books. They took 1st and 2nd year material with them. Normally, this would be wise considering his situation but as he had already lived through both 1st and 2nd year, it was just a monumental waste of money but he couldn't very well explain that, so he didn't say anything. They also got a cauldron, vials, potion ingredients and a few 'fat be gone potions', which he drank. They tasted like pumpkin soup and within minutes, he was no longer fat, chubby, yes but not fat. It was a painful process but it was necessary. They wouldn't find any robes in his size right now, for he was truly a whale of a boy, as wide as he was tall. Next, after the painful transformation was done, he bought his robes and they ate at the leaky cauldron, which hadn't changed much either. Later, Dudley took a photo of himself and send a letter to his parents, explaining about the fat be gone potions. He didn't want them not to recognise him anymore.

After he had send the letter, they were walking through the pet shop and as he was walking past the snakes, he asked professor McGonagall, "Professor, could you tell me about the staff of Hogwarts?"

"Mr Dursley… was that just… parseltongue?"

"Parsel-what now?", he said, playing ignorant but now he noticed, he wasn't speaking english, he was hissing out words. Was this boy, who's body he had overtaken a descendant of the gaunts? Ominis was the only parselmouth he knew but no… if there were any gaunt blood in his veins in the last five generations, the blood test at the bank would have shown it. What was happening?

"It is! By merlin's beard! I knew your aunt was a parselmouth but I thought she was just an exception to the rule… the Evans' must be descendants of Salazar Slytherin, so distant that it doesn't show up on the test… Oh right, what you were just using, that language, it's parseltongue, those who speak it are called parselmouths. It is the language of all snakes. The most well known parselmouth was Salazar Slytherin, one of the founders of Hogwarts. It is a prestigious ability, though many think of it to be a dark ability, which isn't true, there have been plenty of good parselmouths. Your ancestor, Gregory Grey, was friends with a parselmouth, if I remember correctly… I don't remember his name though. He pushed a new law for the harsher control of the unforgivables "

Ominis… what happened to him? What happened to the Gaunts in general? She spoke of Salazar Slytherin but not of the Gaunts…, "What is an unforgivable?"

"You will learn about those in your fourth year"

It was hard to remember to feign ignorance about all of this. He knew, of course, what the unforgivables were. Sebastian taught them to him and he used them against the Ashwinders and goblins in his fifth year. At first, he was at odds with Sebastian, in the first few years of school but after the third year, he befriended Anne and from their connection, Dudley got closer to Sebastian. He learned quite a few spells with him, not just the unforgivables. Most of the curses he knew, he learned from or with Sebastian… Dudley wondered what happened to him. Ominis pushed a law, so he worked more than likely in the ministry. What did Poppy or Natty do after school? Mysteries to which he might never know the answer.

"Can you tell me more about the teachers?", he asked, this time in english.

"Well, there is Professor Snape, he is the head of house for slytherin and the potions professor, professor Sprout, the head of hufflepuff and the herbology professor, professor Flitwick, the ravenclaw head and charms teacher, me, head of Gryffindor and transfiguration professor, There is headmaster Dumbledore and-"

"What's Professor Dumbledore like?" he asked. He didn't want to suffer under someone like Black for another six years, one time around was bad enough, the man was insufferable.

"He is a brilliant wizards, though he can be a bit of an airhead sometimes", she confessed.

It sounded like he wasn't as bad as Black but he would have to wait to confirm what she said. From what he remembered, Albus Dumbledore was a first year when he was in his seventh year, he seemed nice enough, a red haired wizard with a crooked nose. He must be well over 110 years old now… strange to think about, "okay, continue"

"Yes, where was I- right, Professor Sinistra teaches astronomy on friday nights, Binns -a ghost, yes a ghost teaches in hogwarts, don't look so surprised- he teaches history of magic", so Binns was still the history professor, huh? How Dudley hated that ghost, ", that's it for the professors you will interact with as a second year, then there is Hagrid, our groundskeeper, our matron Madam Pomfrey, our caretaker, mr Filch and finally, our librarian, Madam Pince"

"Okay, thank you professor. So, what will we learn first? Transfiguration? Charms? Herbology?" He was faking his excitement. The time until the school year started would be filled with him pretending to struggle, he knew already.

"First, you'll have to catch up on all the theory you missed but worry not, you won't have to read the entire books, it would impossible for you to catch up like that, no, we will be using these", she pulled out a set of vials, filled with silvery-white whisps, "memories of the first year curriculum. They are taken from students fifteen years ago, after a student's wand misfired and erased half his class' memories of their Hogwarts years. With these vials, you will be able to learn the theory and the praxis within weeks, instead of months. We have two months to get you up to the standard of the others. We will most likely have done that after one month, after that, I will help you study your second year material, it is never wrong to be prepared"

She sounded quite like a Ravenclaw, though she was a Gryffindor, he shrugged, "okay, so when do we start?"

"We will start tomorrow. We will be staying here, at the leaky cauldron, I have already paid for our rooms and within mine, I have a pensive, the object required to watch these memories", McGonagall said, sipping the last bit of her soup, the lazily named 'soup soup soup', whoever came up with that needed to be tested. For what, he didn't know but they needed to be tested.

The next morning, after breakfast, they walked into Professor McGonagalls room, and watched the memories. It was nice having a refresher. Over the next three weeks, he 'caught up' to all the material of the first years. McGonagall praised him for being a fast learner. Then, they began studying the second year material. Most of it was stuff he had read before but the books for Defense against the dark arts, they were rubbish, absolute rubbish, they were story books, not textbooks and they were expensive too. They were nice story books though, the author had quite the talent for getting people engaged, so, he read them in his spare time. By august 15th, McGonagall left him alone in diagon alley, saying she had things to organise for the following school year. So, Dudley was all alone, though he wouldn't be for long…