December 24th of 2012

Disclaimer: I do not own Harry Potter books or any of character, JKR does.

Warnings: None as of currently I can think of, other than AU, some minor Albus Dumbledore bashing. Harry Potter is Salazar Slytherin fic.

Summary: Harry Potter was not the person everyone seemed to think him to be, and as the truth finally comes out, shock travels through the whole Wizarding World... And what is the deal with Voldemort?

Enjoy!

Helen Stillnight Presents

IMMORTAL

-Prologue-

In time of Past borne Childe

Eyes with color of Death and hair of Raven's wing

Speaking of the Ancient tongue of Praised Serpents

And travels he through the times to see the World that shall be his

With Power of the Lightning shall he be Marked upon

And the Immortal shall he be.

Salazar Slytherin was kindhearted man and one with of the good intentions. But sometimes he just couldn't help but be annoyed with his companions. They build castle as their home with his companions and they took students with certain skills. That skill was Magic.

As time wore on he married with strong yet kind woman and sired many children. He taught at school called Hogwarts. He taught at Hogwarts many subjects and acted as Head for nearly century. When his old companions Helga, Godric and Rowena passed on due old age he left school in hands of their descendants and Basilisk Seyeena he had assigned to protect the school, and left to travel around the world.

Salazar Slytherin was lost into mists of the past but he continued to live on. He could not die even he tried to kill himself or he was killed by other. He always woke up again, alive and well.

Millennium passed on, and during that time he wrote many, many books under many different names. In every two centuries he changed his identity with ritual.

Then arrived 1900. Times were starting to get interesting. Newest Dark Lord rose powerful and strong, but he fell in 1945 to wand of Albus Dumbledore. Peace reigned few decades, and another Dark Lord rose. This time he was more powerful and fearsome than Dark Lord Gellert Grindelwald.

New Dark Lord went by name of Lord Voldemort. And he was rumored to be Salazar Slytherin's heir. At this point Salazar started to study history to see at which point things had started to go awry and he was said to be Dark Lord in his time.

In 1980 he run into young couple that had just lost their new born son, child had been stillborn. And he decided that he would ease their sorrow, even if a bit. He de-aged himself to new born child, and with help of house-elf he was delivered to doorstep of that couple.

And so he became blood adopted son of James and Lily Potter, son named Harry James Potter. And this where his tale starts.

*** HPSS ***

-Chapter One: Coming Out-

Harry Potter's childhood had never been ideal or very pleasant, for that matter. His parents had been killed when he was mere 15 months old babe and he had been left at door step of his mother's sister, aunt Petunia and her husband Vernon. Harry also had a cousin, Dudley, with whom he did not get along very well. It might have been something to with the fact that Dudley always bullied Harry with Piers, Dennis and Malcom, who were Dudley's gang of bullies. They also terrorized whole neighborhood and younger children.

When Harry had been 11 years old, he had received letter to attend very special school. School for Magic. And he found out that his aunt scorned him for having magic and that his mother had been a witch.

His first year at Hogwarts had not been pleasant, and years following had not been either. He was supposed to be some sort of hero to Wizarding kind, and he needless to say, he did not like the idea of being Hero.

Harry Potter had also a very huge secret he had been hiding all his life. NO ONE knew about it, not even his best friends Hermione Granger and Ronald Weasley. And in his sixth year at Hogwarts he finally revealed it to whole school.

And it plunged whole world in state of chaos.

*** HPSS ***

Salazar trudged through the Castle extremely annoyed expression in his face. He was reaching end of his patience with Wizarding populace. It Valentine's Day, and he had been flocked with Valentine's Day gifts, cards and chocolates whole day. Not only that but also all magazines and other news papers were full of shite written about him, or rather about his alter ego Harry Potter.

He banged door leading to DADA classroom open and students inside jumped with surprise at his angry entrance. His wrathful expression kept other students asking about him stupid questions, but it did not stop their teacher Severus Snape insulting him when man finally entered to class looking as wrathful as Salazar did.

Salazar tolerated it to a certain point. When class was in half way a progress there was 'accident' caused by a Slytherin student, Vincent Grabbe. Miscast spell caused serious harm to classroom and students were ducking under their tables to avoid shards of wood and stone flinging around.

"By the Salazar's beard! What you think you are doing you stupid boy?!" Professor Snape bellowed angrily, looking more menacing than he did normally. "I told you to be very careful with this spell! Obviously your puny mind couldn't comprehend..."

Salazar's eye twitched violently as he heard Snape curse. "Don't people understand how annoying it is when people uses your name as swear word... And I do not have beard, for the goodness sake!" he muttered out loud and Hermione who was sitting next to him was looking him oddly.

"Harry, what are you saying...?" Hermione whispered, all while listening Snape berating Grabbe.

"Something you should know, but it may not be best time to tell it now...", Salazar managed to say before before he was yanked under his table by very angry looking Snape.

"And pray tell, Mr. Potter what you deem so important that you do not need to listen me when I'm lecturing class for safety?" asked Snape with silky smooth voice that always indicated danger.

Salazar pulled himself free from Snape's grasp and said as silkily as Snape had. "I'm tired of having disrespect from people that are so much younger than I am", he replied haughtily and straightened himself smoothing out his robes, and with blink of an eye he started to shift. First he grew older by few years, got taller and his hair longer. His blood adoption induced changes melted away revealing his real appearance, killing curse green, piercing eyes and hair so black that it had blue tint in light.

In place of young Harry Potter stood ancient, ageless and timeless looking man with noble, and aristocratic features. Nostrils flaring he turned to look at class full of shocked students and teacher.

Snape had paled drastically and went wide eyed, his mouth was hanging lightly open due shock. Students were not faring much better than him around them. "WHO ARE YOU?! What you have done with Harry Potter?!" he demanded furiously and pointed Salazar with wand threateningly.

Salazar's voice was frosty as he spoke. "I am Salazar Tychion Slytherin and Founder of this school, but I am also known as Harry James Potter. And you'd do well to show respect people much older than you", his voice was polite but frosty and caused shivers run down in every-ones spines. "From this day onward things will change. No longer I will tolerate how things has gone by here last few hundred years. But first, I have to deal with my wayward heir. He needs some discipline and grounding for next decade", his nostrils flared at the thought what he had gone through with him.

Everyone in near vicinity was beyond stunned.

"Bloody hell...", Ronald Weasley muttered wide eyed. "My best friend is Salazar Slytherin..."

"Language, Ron", Salazar chided, and turned then to Snape. "Class is dismissed. Professor Snape and I will need to have a small chat. Right now", he said and students scrambled to collect their things. He absentmindedly waved his hand above his head and damage earlier caused by Grabbe was fixed in blink of eye. "Mr. Vincent Grabbe, you will be serving detention with Argus Filch for deliberately endangering fellow students lives by purposely miscasting lethal spell. And 25 points from house of Slytherin. Your detention shall be served tonight at RIGHT after supper", he added sharply. "Now, scram!"

All students at present fled from class, leaving Salazar Slytherin and bewildered professor behind. Snape didn't know what to say or do. It was not everyday occurrence that someone came out telling that they were long deceased Founder of Hogwarts School.

"And now, young man, we two shall go to your office and I will take dose of Veritaserum and you will proceed to ask me some questions to verify my identity", Salazar said, guiding Snape kindly out of now empty classroom.

In Snape's office they did as Salazar had said. Salazar himself seated himself to plush armchair and made himself comfortable while Severus collected his bearings together.

Severus with trembling hands dribbled three drops of Veritaserum into glass of water and gave it to Salazar who took it and drained his glass empty. His eyes immediately glazed and turned vacant, indicating that potion had taken hold.

"State your full name", Severus said and took out parchment and dicta-quill to record interrogation.

"Salazar Tychion Slytherin, also known as Harry James Potter, blood adopted son of James and Lily Potter", Salazar stated his voice void of any emotion, and quill scribbled away his answer.

"When and why you were blood adopted by Potters?" Severus questioned.

"I met them 1980, their son had been stillborn and grief was immense. I wrote letter explaining some of my background to them, de-aged myself to newborn child of few month old, with help of house-elf delivered then to them. They blood adopted me as their son and told no-one about it. I helped them to heal their broken heart. They were very good parents, and I sorely miss them", Salazar said voice devoid emotion but his expression softened slightly despite Veritaserum effects.

Severus was shocked. He didn't know what to think of that revelation, but it pained him, too, that Lily had lost her birthed son. "When and where you born?" he asked with slightly quivering voice.

"I was born long time ago, July 31st. It was year 597, in Scotland, in small wizarding village called Serantine - it was destroyed to the ground by muggles around 843 so it doesn't exist anymore", came Salazar's reply.

"Who are your birth parents? Did you have sisters or brothers?"

"My father was Count Tychion Cael Slytherin and mother Razael Elvina of Bramblestaff family. I had older sister Caelina Sarael and younger brother Selwin Tychon."

"Who you married and which were your children names?" Severus asked, and dicta-quill scribbled away as was spoken.

"My wife was Elana Caarin of Lakeshire family. I have seven children, Marin Cale, Alectos Selwin, Caarin Elvina, twins Serwion Abraxas and Abraxas Serwion, Severina Tyrael and Harwia Laurion", Salazar rattled off names.

"When Hogwarts was build and started to act as a school? When did you leave school and why?"

"It was build in... 862, if I remember correctly, with Godric, Helga, Rowena and I. Activity as school started 870. I was teacher for about near 7 decades and head for century. I left when my friends passed away due of old age, leaving school in hands of our descendants and basilisk to protect students and staff with clear orders never to harm any occupants of school. It was 1043 when I left."

Severus was in state of some sort of shock. History told that Salazar Slytherin had left due argument with other founders about muggleborns, but... Obviously it wasn't true. He had one last question before he would administer antidote. "What was your relationship with other founders?"

Small sad smile graced Salazar's face now. "We were best of friends, as close as we would have been siblings. Godric was my non-blood brother, and it broke my heart when he died first. Rowena passed next, it was dragon pox. She was my non-blood sister, and I feel still guilty for not to be able to cure her illness. Helga was last to pass on. She was nearly two centuries old when Death came for her. Even to this day, I still mourn for their deaths", he told, and dicta-quill scribbled on.

Severus gave antidote. "I apologize my unruly behavior and disrespect towards your person, Lord Slytherin", he said bowing his head respectfully, baring his neck to man.

Salazar sighed and rubbed his face. "Your apology is accepted, dear professor. There is much to do for me. Our world had fallen in state of disrepair and chaos. But most important of all, my wayward Heir is running rampart and I need to go punish him like naughty child he is. Had I realized the situation earlier to be this bad, I would have intervened earlier. But it is too late to think what if's", he said pinching his nose bridge and took his round glasses off, slipping them to his robes pocket. "He is so much in trouble, that unruly child", he muttered in exasperation.

Slytherin stood up and pursed his lips. "I need to rest now. At the morrow, however, you shall take me to him, and I will set him straight."

*** HPSS ***

Dinner that day was tense and packed with rumors. Albus Dumbledore was not pleased even slightest to hear that Salazar Slytherin, Founder of Hogwarts was truly and well alive. And even less pleased he was because Harry Potter was in truth Salazar Slytherin. It didn't bode well with his plans for Harry and defeating Dark Lord.

Salazar was briefly seen in Great Hall in his true form and he slept his final night in Gryffindor Tower, and then he would return to his own personal quarters, so called Chamber of Secrets. He had send house-elves to clean and repair his quarters and harvest basilisk corpse lying down there. He regretted that he had had to kill her earlier. Seyeena had gone insane due loneliness spending near millennium alone, locked in his chambers.

Evening in Gryffindor Tower was slightly tense as Salazar spend his evening before going to sleep with Hermione and Ronald in their favorite seats before fireplace and other Gryffindors were curious about him.

"Are you really, really Salazar Slytherin?" Ron asked curious as he inspected his best friend turned to ancient man.

Salazar smiled in very much Harry like way and said. "Of course I am. I was born as Salazar Slytherin and helped to build this castle with own hands over millennium ago. But never forget that I am also Harry Potter, your best friend. I was blood adopted by Lily and James when their own child was stillborn. I de-aged myself and they knew who I was", he said with sad smile. "My wayward heir is going to get in so much trouble and he will be spanked and grounded next decade, at least", he muttered.

Hermione made strangled sound that might have something like muffled laugh. "S-spank him?" she managed to choke out.

"Of course, he has been very very naughty child. To mutilate his body like that and kill people for the sake of power", Salazar shook his head disapprovingly. "I can't believe that my great great great great... well, great grandson would do something like this", he huffed. "Although, I have to wonder what drove him into this path", he muttered. "Nothing makes sense anymore."

"Well, you know that he grew in muggle orphanage, pretty much in similar conditions like you did with Dursleys", Ron said quietly. "Those muggles might have done something to him. And headmaster refused to give him sanctuary in here."

Salazar frowned. "Dumbledore had no right to refuse anyone sanctuary here. This school was build so that not one magical child would grow up hated or abused in their muggle families. Rules states that any magical child that asks to stay here they can stay, whether they be muggleborn, half-blood or pure-blood I wrote that rule myself with Godric. And Dumbledore refused to allow me to stay here when I was only known as Harry Potter. I have to investigate this what is really going on with Magical world currently", he said pursing his lips into frown. Then he sighed and mumbled. "Merlin, I miss my children and friends."

"You have many children?" Ron asked with curiousity, buried previous topic for now.

Salazar smiled in fond manner. "Oh yes. I had seven wonderful children. In my days of youth five or six children was average, and to have only one or two was actually rarity. Some families had even as many as ten or eleven. Big families were very common back then, but in modern days they are rarity. So much has changed and our numbers are slowly diminishing due inbreeding and prejudice towards muggleborns and half-bloods", he told.

Hermione's eyes widened. "So muggleborns were widely accepted back then?" she asked.

"Yes, every muggleborn child was loved and cherished, some went even as far as to blood adopt them if muggleborn child's mugglefamily was hateful or abused the child", Salazar said. "Pure-bloods usually often married muggleborns and half-bloods to bring new, fresh blood and strong magic into their families. Squibs were rarity in those days. But something has changed. Did you know that term 'mudblood' was developed only two or three hundred years ago, by some extreme blood puritists. 'Bloodtraitor' on the other hand was used even before I was born and it usually meant a person who was magical but re-announced his or her magical heritage and went to live as muggle. I do not know when meaning of that word changed exactly but it definitely doesn't mean same as it did before."

Hermione was fascinated by old ways. "Can teach me more about old ways when you have time? I'd like to learn about old ways and start using them again", she said eagerly and Ron nodded.

"I would be delighted to", Salazar replied with small smile.

They conversed bit longer about Salazar's past and his days as teacher before they went to sleep.