Harry Potter and the Champion of Olympus: A Harry Potter/Percy Jackson and the Olympians Crossover Fanfiction

Disclaimer: I do not own Harry Potter or any of its associated characters: all rights belong to JK Rowling. I do not own Percy Jackson or any of its associated characters: all rights belong to Rick Riordan. I do not own any other crossover references used in the story: all rights belong to their original creators. I do own any OC spells explained at the end of a chapter.

Plot: Gabriel Herrol's The Squatter of Olympus Response: Stranded in New York, Harry wandered alone with no idea what to do, where to go or who might help him. Maybe he should do the first thing anyone does in New York: look up!

Challenge Information: The Squatter of Olympus; A Harry Potter/Percy Jackson and The Olympians challenge: In which Harry is a demigod – obliviously – but he's more independent, cunning and a free spirit than in canon.

After a business deal gone wrong in the United States where Vernon took the entire family – Reluctantly in Harry's case – he decides to get rid of him by abandoning him on the streets of New York and in a fit of genius or pure malice, he took the boy's passport from him to reduce the chances of that act getting back to him.

After wandering a while and surviving on the streets, adapting to his new life, Harry accidentally stumble upon the elevator to Olympus, already prepped to go to the 600th floor.

Requirements: Harry goes to New York in the summer months with the Dursleys for a major business deal with some company

Harry is a demigod, be it Greek or Roman. I don't have a particular deity in mind, but I would prefer that his divine parent be his mother. Got to give props for Lily's sacrifice.

Vernon abandons Harry in the streets of New York after his business deal goes bad. In a fit of malice/genius, Dursley took Harry's passport from him but left him some money to at least be able to start somewhere. The Dursley family really don't like Harry and only took him in because Dumbledore menaced them. And the dislike, even maybe hatred is mutual. But dislike doesn't mean Vernon is cruel enough to not give the boy a fighting chance.

Harry wanders the streets a few weeks, never daring to go to a police officer or someone with authority after bad experiences. For example, he did tried to denounce his treatment at the Dursleys, but nothing came of it except some staff changes and the affair swept under the rug.

After visiting the Empire State Building, Harry stumble upon the elevator going to Olympus, already primed with the access card, without a guard! He can be occupied somewhere else, or anything. As long as he isn't to his post when Harry came through, I don't care. Harry's guts are telling him that there's a safe place ahead, he goes in and slips into the home of the Gods without anybody knowing or noticing!

Harry must live totally incognito on Olympus a few weeks but when his supplies start drying up, Hestia must help Harry on the sly after being the only one detecting him after making sure he isn't a threat for her family, conjuring food and drinks for the boy without alerting anybody. After all, even the goddess of the Hearth can have a mischievous streak once in a while. Also the boy isn't hurting anybody and there's no Ancient Law forbidding a demigod from squatting on Olympus.

Harry's squatting must be exposed during a Winter Solstice council meeting, so Harry lived on Olympus up to six, going on seven months.

The fact that Harry's mother was married to James up until the death of her husband and also the fact that her mortal aspect gave her life for her son must make Hera took Harry's defence in the Council. Not only he's a proper demigod, born from the sacred union of marriage between a mortal wizard and a goddess in human form, she must gain an even softer spot for him when the boy speak his mind and reprimand Zeus for cheating on his wife. In private or in front of the entire Council is up to you.

Forbidden: Over abusive Dursleys. Yes, they really don't like Harry but they aren't stupid enough to leave a permanent physical mark on him and risk problems with authorities, be it muggle, magical or divine. After all, psychological abuse is way worse than his physical counterpart

Harry getting caught immediately in Olympus. I really want to exploit a possible security risk here. Also, the reaction of the Olympians once they found the squatter would be worth it. Apollo and Hermes would be no doubt laughing their asses off, but the rest are up to you

Dumbledore or an associate of his finding Harry and getting him back to his relatives

Over trusting and naive Harry. I think a good few weeks on the heartless streets of New York would get rid of those annoying traits quickly

Harry getting smote for squatting

Harry joining Voldemort, Kronos or/and The Giants

Harry going with Dumbledore's Greater Good plan

Recommended: Harry being the son of a minor goddess who took a mortal form

Hestia getting rid of the Horcrux the first night she stumbles upon a sleeping Harry

Pre-Hogwarts timeline

Post Second Titanomachy

Post Second Gigantomachy

A trick of the Fates, the Blood Wards erect themselves again around Hestia's Hearth on Olympus or in camp Half-Blood

Harry using Helios's temple as a hideout for his showers and bathroom breaks

Harry being the reincarnation of Helios

Optional: Harry not knowing of his half-blood nature

Harry stumbling accidentally upon Zeus getting it on with somebody who isn't Hera? XD

Harry fleeing the scene when he see the thundering expression upon Hera's face after a screw up from Zeus

Harry hiding himself behind Ares's back when Aphrodite wants to use him as a Ken doll, all but begging the God of War to teach him how to fight and to save him from that torture! XD

Author's Note: So, for this one, which is one of a selection of all-new ideas to help celebrate my ten year tenure on FFN – hold for cheers and applause from loyal fans – I decided to go down a bit of a different road to some of my usual stories and, at the same time, have some fun. Also, after reading another story that is similar to this challenge, I was inspired; and so, here we go.

Anyway, you know how it goes: if you don't like it, don't read it.

Dedication: I'd like to dedicate this story to Gabriel Herrol for coming up with such an interesting idea: my recommended reads are Harry Potter, Squatter by Enterprise1701-d, Hadrian Potter: The Lightning Thief and Hadrian Potter: The Sea of Monsters by dhairyasood748, Sun of the Archer Book I, Sun of the Archer Book II and Sun of the Archer Book III by digisovereign, Saviour of Magic by Colt01, Child of All by Venquine1990, Prince of Death, Return of the Speaker's Heir and Remembrance of the Grim Wolf by The Potters of the Future and Half Blood Harry Potter by Loki Palmer

Key Pairing: Eventual Harry/Thalia

Other Pairings: To be determined

Normal Speech

'Thoughts'

'Godspeech'

/Parseltongue/

Chapter 1: Empire State of Mind

For as long as he could remember, nine-year-old Harry James Potter had always felt like he was the black sheep in his family.

Ever since finding him on their doorstep when he was a little over a year old, his Aunt Petunia and Uncle Vernon had always treated him like he was nothing more than a stain on their perfect lives. Whether it was yelling at him or blaming him for things he didn't even understand or whether it was the act of starving and even stealing basic comforts from him, again for things he could neither understand nor be responsible for happening in any way whatsoever, the Dursleys had always treated Harry like he was nothing more than scum.

At a young age, a small part of the boy's mind had come to accept he'd never be accepted as family by them and he had to get used to that idea.

So, when it was announced, shortly before Harry's tenth birthday, by Uncle Vernon that all of them – including Harry, though it seemed to hurt the fat man to even suggest it, let alone say it with a straight face – were going to New York City in America for some business deal of his Uncle's, Harry should have probably known that nothing was what it seemed.

He should have remembered how little he meant to the Dursleys and how this was definitely not a treat for him.

He should…

But he didn't, mostly because he was a nine-year-old boy taking his first trip not only out of Surrey, but out of the country.

It was his first aeroplane flight across the Atlantic; he even got a window seat, which meant he got to see the white-clouded skies, the ocean and the Statue of Liberty as they flew into America and, most importantly of all, it was his first holiday.

And, again, because he was only nine, he saw this as cause for excitement, gratitude and a moment or two to forget his troubles.

That lasted all of 24 hours before reality hit him again with a bump in 48.

Two days.

That was how long after landing in America it took Harry to remember how much he was loathed and hated by the Dursleys and how far they'd willingly go to remind him of that fact.

Champion of Olympus

It all started when, the night after they'd checked into the hotel, Uncle Vernon came to Harry's room, a smile on his face and a sense of pride in his expression. At the same time, his face seemed reddened, as though he'd been screaming himself hoarse, while his smart suit was more-ruffled and dishevelled-looking than usual.

He also had a smell about him that Harry dimly recognised as the scent of grownup drinks, but he didn't know why the man smelled like he did.

For several minutes, Vernon seemed content to look his nephew up and down before he reached into his back pocket and withdrew his wallet; as Harry watched, Vernon leafed through his wallet before he produced two crisp fifty dollar notes before he handed them to Harry and, in no uncertain terms, he told the boy to go to the ice-cream parlour on the corner and buy him and Dudley some sweet treats.

Again, Harry's nine-year-old mind saw the money, heard the word sweet treats and sensed an air of responsibility and grabbed onto it with both hands, leaving the room as fast as he could.

Never once thinking about the sick-and-twisted gleam in his Uncle's eyes as he watched Harry leave.

Champion of Olympus

Twenty-five minutes later, Harry returned to the hotel, but when he went back up to the room, he was surprised to find it locked and barred; when he went back to the reception desk and asked about some help, Harry was beyond horrified, if not upset, to hear the response the concierge gave him.

"I'm sorry, young man, but the party that paid for reservations on that room checked out five minutes ago."

Several minutes later, with his whole body, his mind and his soul feeling deaf, dumb, blind, numb and all but dead to everything else around him, Harry clutched the change from his trip to the ice-cream parlour – though not before he'd eaten the ice creams in question since it made more sense than just letting them melt and cause a mess – in the pocket of his second-hand trousers as he stumbled and staggered through the city, unsure of what he was meant to do or where he was meant to go.

He still had money, which was important, but he couldn't believe how silly, stupid and senseless he'd been.

Even moreso when he remembered, as he'd left the hotel, how his Uncle had kept his passport safe while Harry had gone to the ice-cream parlour.

Now, he was alone.

An orphan.

Abandoned in one of the biggest cities in the world.

And he had no idea what he was meant to do, let alone no idea of how he was going to find his way out of the labyrinth he was in now.

Champion of Olympus

Ten Days Later

It might have been the middle of June, but New York was experiencing one of the harshest, most-numbing rainstorms in the past year.

As the watery droplets assaulted the earth, as well as the windows, rooftops, sewers and alleyways throughout the city, thunder rumbled like a chorus of big bass drums overhead while forked lightning danced across the skies like swords cutting through the clouds, illuminating New York for several seconds at a time.

Beneath the deluge, Harry huddled down in the camp he'd managed to find shelter in, but with the way the rain assaulted his dark surroundings and how the winds buffeted at him like a wall of air hitting him in the face, it wasn't long before cold started to seep in, freezing Harry's already numb body right to the core. Pulling the large coat he'd found discarded in one of the many dumpsters in the alleys around him, Harry shivered with cold and dread while his stomach grumbled, demanding food and sustenance.

The change from his Uncle's cruel trick had dried up days ago, as had the last proper meal Harry had eaten and, without means or aid, he'd been forced to skulk through the shadows of New York, dodging police officers, as well as other men and women out of some inborn knack to survive, to keep moving and to find any way he could to survive.

Or maybe it was living with the Dursleys that had done that to him, he wasn't sure.

Regardless of the explanation or the reason, Harry had managed to survive, as best as he could, thus far.

Champion of Olympus

He'd found a way to navigate the city by day, when mass crowds swallowed him up, making him as inconspicuous as the next person.

Sure, he often found himself following the crowds, keeping his head down and hoping nobody noticed his bedraggled, dirty looks or his air of being lost, frightened and alone, but it was better than being out in the open where he could be snatched up by who-knows-what.

He'd learned that lesson on Night One, and had the thin Z-shaped scar on his left cheek to prove it; how he'd even escaped that incident, he wasn't sure, but he wasn't in such a hurry to chance fate a second time.

Aside from the one incident, Harry had done pretty well for a nine-year-old with no clue of what he was meant to do now.

In this manner, using his little trick of blending into the background, he'd found himself huddled amongst groups in the direction of many of the city's biggest attractions, such as Grand Central Station, the Brooklyn and Manhattan Bridges, the Chrysler Building and, of course, a landmark that had become one of Harry's surprisingly-favoured buildings, the Empire State Building.

In the ten days since his desertion by his family, Harry didn't know why, but something about the supersized skyscraper had made him feel…safe.

Like there was something about it that gave him a warm feeling, deep in his heart and in the pit of his empty belly.

However, on that day, June 21st, for some unknown reason, there was something about the Empire State Building that had made Harry a little uneasy and nervous. Dare he think it, but there'd even been something that had made his stomach clench with something more than just hunger and the cold feeling of uncertainty.

He didn't know why, but something about the building made him fear it, like it was something out of his darkest nightmares.

Champion of Olympus

Even now, as the storm rained down on him and the rest of New York and he felt his heart clench with pain, fear and dread that this was finally it, the day he'd die and leave this world as he entered it, alone and with no clue as to how or why, Harry looked out one side of the alleyway he'd made his home. In the distance, the towering spire stuck out like a sore thumb and, whenever lightning filled the skies, Harry thought he saw it strike the spire, lighting up the entire skyscraper with its fierce light and dangerous power.

With the rain creating a river and moving most of the rubbish through the alley, Harry didn't know how much longer he'd be able to stay in his little camp, but every time he looked up at the Empire State Building, he felt compelled to stay, to be as far away from the place as he could get.

But still, he was getting wet, and cold, and he risked being washed out into the street where someone would find him and then…he didn't know what, but he wasn't about to chance fate a second time.

As the wind blew through the alley, the cold chill cutting across the scar on Harry's cheek, the young boy whimpered and huddled down as small as he could get. As he did so, however, some small part of him, a part he'd ignored once before – and look where that had gotten him – found itself drawing his attention to the spire. More-specifically, this strange instinct drew Harry's eyes to the whole building and, as he looked at it, he saw another bolt of lightning strike the spire, lighting up the building for a few seconds.

But in those few seconds, it was like an angel had touched Harry, making him see more than just a fearful place for reasons he didn't know.

He now saw a whitish-golden light, accompanied by an urge to move closer to the building.

If anything, he'd be dry and, who knows? Maybe he could find some food.

Before he had a chance to argue either of those points, much less stop himself, the nine-year-old boy picked himself up and moved, quickly, but carefully, in the direction of the Empire State Building.

Curiously, as he reached the main entrance into the foyer, the rainstorm seemed to ease up, though as Harry ran a hand through his messy, slightly-knotted dark hair and over his soaked face and clothes, he found himself more in awe of the building itself.

Nearby, a waiting area seemed vastly-unoccupied, which seemed strange considering it was so wild outside, but Harry didn't look a gift horse in the mouth. Moving towards one of the vacant seats, picking up a tourist brochure just for appearances' sake, Harry hid himself behind the pages, which seemed to describe the Grand Canyon as he wondered what he was meant to do now.

A few minutes later, he got his answer when an elevator dinged nearby.

When the doors opened, Harry frowned when he heard a few low, indistinct voices whispering among themselves, some of whom he caught words like Dad and quest and training, but, when he looked up, he only saw the strangest sight. A small group of kids, many of whom looked older than him, dressed in pale-coloured jeans and wearing an array of orange shirts, all of whom were being led by a middle-aged man who wheeled himself towards the exit in what looked like an electronic wheelchair.

For a brief moment, Harry even thought he saw this man's eyes look in his direction, before he led his party on towards the exit.

Waiting until he was sure they were gone, Harry looked to the elevator, which was still open, emitting a warm breeze that actually blew across Harry's whole body, drying his clothes and making him feel warmer than he could remember. At the same time, he thought he could smell a warm, delicious smell wafting down through the vents in the ceiling of the elevator.

Driven by this scent, as well as the hunger he felt, Harry moved into the elevator, where he was surprised to find a key-card placed in the slot of the elevator, as well as a great big, shiny button over his head.

A great big shiny button that looked as though it should never, ever, ever be pressed under any circumstances.

And yet, when Harry saw this great big shiny button, his nine-year-old self won out again as he did what any kid would do with such a button.

He pushed it.

The next thing he knew, his stomach seemed to plummet straight down into his feet as the elevator rose into the air with surprising speed and force.

It was only when he looked up at the button that Harry frowned in confusion when he noticed the number on the button;

600

But, as far as Harry knew from the guidebook and what he'd heard when he'd been blending in, the building only had 100 floors, give or take a few.

So where was he going?

Up and up the elevator went, for several minutes until, to Harry's bewilderment, the tell-tale ding told him he had arrived, followed by the doors sliding open. The first thing he was aware of was a golden-coloured cobblestone pathway that led away from the elevator, moving upwards towards what looked like a strange, darkish-coloured dome of clouds and stone, which seemed to draw Harry towards it even as he stepped out of the elevator, which dinged closed and left him standing on the stones.

Swallowing hard as he tried to figure out what was going on, much less where he was, there was only one possibility that filled Harry's mind at that particular moment and, even then, it was only because it was one of the few things his Aunt and Uncle had complained and warned him about.

Before they'd abandoned him in one of the biggest cities in the world, anyway.

As he shakily moved in the direction of the clouds, a part of him realising he didn't have much of a choice otherwise, Harry looked at the scene ahead of him, as well as the path leading him there, with bewilderment in his eyes.

'Is…is this…Heaven?' he wondered, slowly moving towards the cloudy structure and the end of the path that led him there.

As he did so, Harry made another mistake that his instincts screamed at him not to do.

He looked down!

And when he looked down, seeing a large, but familiar stretch of buildings, roads and skyscrapers that now looked more like thorns poking up out of the earth rather than the supersized structures they were, Harry felt his stomach clench and churn with nausea before he looked up again, returning his focus to the weird place ahead of him.

'Nope,' he thought, shaking his head as he made his way into the clouds, which then revealed themselves to be concealing a mountainous structure filled with what looked like large palatial buildings, white-and-gold in colour, with torch fires and a vast array of statues of different shapes, sizes and forms, many of which gave Harry chills to look at them.

As he made his way deeper into the strange new environment he found himself in, Harry was surprised to find the strangest-looking people and creatures suddenly appear in front of him, as though they'd been there all the time and he'd only just been allowed to see him.

They were acting like they were gathered in a place similar to an Asian bazaar and many of them were dressed in an array of differently-coloured gowns, long, blanket-like wraps, which he thought seemed strange, but then again, with his damp clothes and bedraggled looks, he wasn't one to talk, while, to his alarm, some were even dressed in gold armour with different symbols and strange letters engraved onto them.

And yet, as he saw these armoured men and women, Harry was surprised to see them hardly pay him any attention at all.

Neither did any of the other oddly-dressed people seem to notice him.

If anything, they reminded Harry of the guards outside Buckingham Palace; trained to stand there all day, pay no attention to anything except their duties and act only on command from their superiors. It was weird, to say the least; however, as Harry moved away from the guards, he looked around for somewhere that he might be able to sit down, if only for a few seconds, and collect his thoughts.

Nearby, a pair of large, golden-coloured double doors stood ajar, once again emitting a warm breeze that made Harry smile to feel it.

Before he had a chance to stop himself, he walked in through the open door, though when he did so, his eyes widened, his jaw dropped and his heart suddenly felt warmer than warm when he found himself staring at the only thing that seemed to occupy this unusual building.

A large, solid gold-and-bronze statue of a very handsome-looking gentleman, whom was dressed in a suit of armour that covered him as well and proudly as many of the men and women Harry had seen outside. In one hand, the man carried a large, golden sphere, which seemed to be glowing, bathing the whole building in warmth, which Harry guessed explained the feeling he'd sensed before.

Over his back, the man carried a bow of some sort, with a flurry of bronzed arrows set into the spot next to the bow while, in his other hand, the man held what looked like a golden harp, like something out of Jack and the Beanstalk, which emitted a soothing tune that filled the air with song, calm and a sense of warmth similar to the glowing orb in the man's other hand.

Around the man's feet, which were covered by bronze-and-gold sandals, an array of small, strange shapes had been bronzed into the statue's form while, as Harry looked at the base of the statue, his eyes narrowed suddenly when he saw an engraving over the bottom of the statue, fixed onto the top of the platform that the statue was mounted on.

Curiously, when Harry saw the lettering on the statue's platform, he thought he saw it shimmer and ripple before the lettering seemed to transform into plain English, creating one word that Harry managed to sound out.

"A…pol…lo…Apollo: is that your name?"

He looked up at the statue with awe, wonder and no small amount of shame as he asked, "Apollo…I…I'm sorry for just walking in like this, but…but I don't know where I am and…and I just…I was hoping I could…if I could rest here…just for now…please?"

Curiously, a warm breeze ruffled Harry's hair and, when it did so, Harry felt like he'd just been given a cure-all that healed more than just his chilled body and his confused, intimidated senses.

He also felt like he was getting strong again, strong enough to be able to survive anything and everything, bringing with it a sense of relaxation and calm that made Harry smile up at the statue. "I…I'll take that as a yes; thank you…Mr Apollo…"

Moving to a shadowy spot behind the statue's platform, if only to be sure nobody else would see him if they came into the building, Harry huddled down, pulled off his old coat and, draping it over him, he settled against the rear of the platform, looking up at the back of the statue and the light it radiated from the orb in its right hand.

"I…I'm going to get some sleep now, Mr Apollo…I hope that's…o…"

Before he could finish, he was out for the count.

Had he looked up at the statue, however, Harry would have seen the light within the glowing sphere in the statue's hand burn blue before a pulse of the same light escaped the orb, surrounding the entire building before it doubled back, vanishing into the orb once again.

Once it was done, the light within returned to its golden colour, though now, it seemed to dim, as though someone had turned down the light, allowing the exhausted young boy behind the statue to rest in peace.

For now, at least.

So, the adventure has begun and we have an interesting start for our hero, but how could he have conveniently found himself in such an amazing place and what will happen if or when he's discovered?

Also, what was that light in the orb and what has it done to the building around our sleeping squatter?

Keep Reading to Find Out

Next Chapter: Harry's not as alone as he thinks, but it looks like he's still safe…for the time being, at least;

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