Harry Potter, Son of the Shadows

Disclaimer: SEE FIRST CHAPTER

Plot: Response to my 'Twice-Blessed Half-Blood' Challenge: Olympus, Earth, the Underworld; from a world of lies and pain, one shall come forth with the power to rule them all. Enter Harry Potter, determined by Thanatos, Champion of Hecate and son of…wait: is that possible? That God?

Author's Note: Okay, so for those wondering where this one's coming from: it's partially from that dangerous realm of creation known as my imagination and partially from the challenge idea. I know this may seem scary and a little weird, but kindly remember that this is Fan Fiction: also, if you don't like it, don't read it.

Dedication: I'd like to dedicate this story to my loyal readers and reviewers; my recommended reads are Conventus Domus by Lawstudent092 and Prince of Death by The Potters of the Future; two amazing stories by two very creative minds; also, I'd like to recommend Glorious Chaos by Undercover Operative;

Key Pairing: Harry/Thalia

Other Pairings: Others TBC

Normal Speech

'Thought'

'Voice of the Gods'

/Parseltongue/

Review Answers:

Master Xehanort: Ask and you shall receive;

LDR: In a manner of speaking;

Catomit: Hm, do you know what? That would make things interesting, especially since it would frighten the bejesus out of his enemies;

T4: Hopefully, this chapter fills those blanks in for you, though it's even confusing to me and I wrote it;

Winged Seer Wolf: Interesting thoughts there, old friend;

Belgrath: Yeah, it does seem a bit one-sided now, doesn't it? Ah well, that's what makes it so much fun;

StormyFireDragon: Little riddle for you, Storm: when is a brother not a brother? When he's Harry;

Wolfelja1999: As I said to you in the PM I sent, you should recall that I said I wasn't going on that sort of stuff; besides, Zeus and Hera are hailed as King and Queen of Olympus and Hera's his flaming sister;

Undercover Operative: I hope it makes sense to you, my friend: I also hope you enjoy what's to come;

"You saw what you wanted to see," Harry remarked, but as the words left his lips, a familiar darkness rose up behind him; turning to the source of the darkness, even Zeus backed off as Thanatos appeared, Harry now having to glide up to meet his Father's god-sized eyes as he asked, "So, do you want to say it or should I?"

"I will," Thanatos replied, smirking as he faced Zeus before he told him straight, "Allow me to introduce Harry James Potter, the true son and heir…of Kronos! Your Father!"

Chapter 9: Shadow of Kronos

In the past, whenever a quest had been completed and the conquering heroes had returned, Camp Half-Blood was a glorious space of wonder, celebration and joy. There'd be congratulations and rounds of applause before the heroes returned to business as usual while at the same time, there'd be another feast to celebrate the completion of a quest.

This time, however, it was a sombre mood that filled Camp Half-Blood when said heroes, Percy Jackson, Harry Potter, Annabeth Chase and Grover Underwood returned from their quest. Though the skies were marginally clearer than they had been in recent days and though it seemed that peace and balance had been restored to Olympus and the human world, the truth was that peace was the last thing on anyone's mind right now.

Instead, as soon as he'd passed through the barrier between worlds, Harry had diverted his path away from the trio and returned to his private cabin while, at the same time, Percy, Annabeth and Grover went to find Chiron to report their quest's completion.

Standing at the door to his cabin, the darkness of the skeleton warriors around him making Harry feel like he was home, the young Shadowborne heaved a deep breath before he passed through the door, closing it firmly behind him, sealing him in the dark interior.

Shedding his coat, Harry looked around the cabin before, with no real remorse or patience to his tone, he asked, "So how long did you know whose son I was?"

"I've always known," Thanatos replied, emerging from the shadows as he always did, "But unlike the Big Three, I was one of a few forces that found your rising an interesting event and not a blight on the demigod universe."

"But how are they involved?" asked Harry, moving to his kitchen area where he prepared a drink before he returned to the living room, "The Oracle told me that I was a child of the three eldest gods and you yourself told me that meant I was blood of Zeus, Poseidon and Hades…"

"And you are," Thanatos interrupted, raising a hand for silence as he explained to his determined child, "As Kronos' child, you share blood with the Big Three and you also have powers much similar to theirs. It was you who assumed that meant you were genuinely the child of the Big Three and, as I told you before, I couldn't reveal the truth to you until…well, until your birth-right was in your hands."

"My birth-right?" asked Harry, reaching under his shirt where he removed a silver chain that held a pendant; within the pendant, a single spark taken from the Master Bolt was shining brightly, its energy making Harry feel warm and strong. "You mean this? I only did what I did to Zeus because I knew it would piss him off…and I was right."

A smile crossed Thanatos' face before he watched as Harry tucked the chain back under his shirt; at the same time, the primordial of Death continued, "Harry, I have never given you cause to doubt me, have I?"

"Not until lately, you haven't," Harry answered, taking a seat in the lounge of his cabin before he leaned his head against one arm of the chair, his legs dangling over the other end as he added, "But because of this…I just…I don't know: I mean, why would Hades say I was his son if my Father, my true Father is the Father of all Gods? I mean, Kronos is…was…is a Titan, so what does that make me?"

"It makes you impossible," answered Thanatos, chuckling to himself before he quickly continued, "When Hades told you that you were his son, I suspect that his intention was to claim you and your loyalties before you discovered the truth about yourself. However, as you know and I know, it was when you held Zeus' symbol of power in your hands that you realised it for yourself, didn't you?"

"I did," Harry admitted, letting his eyes look to the ceiling as he explained, "When…when Hades determined me with that symbol of his, it was like I finally belonged, but then I held Zeus' Master Bolt in my hands and, when I did, I felt another side of me awaken. Like it was a side of me that's been lost for so long that I actually forgot it existed. That must also be why my eyes blacked out like they did, right?"

"You were in the throes of your true power," Thanatos explained, his own eyes turning black as he told Harry, "You get that from the determination that I put on you: normally, when a god or demi-Titan feels the power of Kronos, their eyes turn gold and, in time, yours will too as his son. However, this time, your eyes turned my colour because of the darkness you felt and because you have not yet realised the full power you possess as his child. When the time comes, you will and, if you desire another little hint, then I'll tell you that before the solstice comes around again, you will feel your true Father's power. For now, Harry, you know who you are at long last and, as I once told you, now that you know the truth, you may ask anything you wish."

"Then tell me," Harry insisted, sitting upright before he faced Thanatos, his eyes filled with his own determination as he asked, "Why did you really claim me as your child if I'm Kronos' heir?"

"Because without the protections that I have given you, you would have died," Thanatos explained, indicating upwards as he told Harry, "What you need to understand, Harry, is that before you, the last children of Kronos were the Gods themselves. Zeus, Poseidon, Hades, Demeter, Hestia and Hera, though the being out there, Chiron, is also a son of Kronos, though he was abandoned by his Mother and aided by Apollo to become the overseer of this camp."

"So would he know who I am?"

"It's highly likely he would," Thanatos nodded, watching as Harry went for another drink before he continued his explanations, "However, unlike Zeus, Poseidon and Hades, I suspect that Chiron watches over you because of your first determination by me. Most-likely, he seeks you to become some sort of equal to your Father and, like the Big Three before you, find the strength to defeat him and vanquish him once and for all rather than simply trapping him in the bowels of Tartarus. Because you believed yourself to be determined by me, Chiron, and most-likely the Big Three as well, wish you to follow my determination and keep as far away from your Father's powers as you can."

"They'll be lucky," laughed Harry, taking a drink from his glass before he asked, "So? What happened then? Why did you determine me and why was my life threatened so badly?"

"I'm not sure I'm the one to answer those questions for you, Harry," Thanatos replied, before he waved his hand and, when the darkness of his power passed through the cabin, the primordial indicated behind Harry as he added, "But you can ask them if you truly wish answers."

Turning to the source of Thanatos' gesture, Harry tried not to show surprise as he looked upon the souls of his human parents, Lily and James Potter, once again, both of them looking somewhere between relieved and worried for what they had been summoned from the spectral plane for.

"Hello again, Harry," James sighed, moving around to look at the boy that he had Fathered and protected for so long, "Well done for finally discovering it."

"How?" asked Harry, looking to his Mother as he asked, "How is someone sealed away really my Father?"

"His body is sealed away," James answered while Lily seemed to be struggling with her emotions; as Harry looked to the man, he sighed as he continued, "But his essence is able to escape Tartarus and seek out those with power before bending them to his will. Sad to say that I myself was one of these people sought out by him."

"How?"

"We were having…trouble in making a child," James explained, perching himself on the edge of the chair as he talked to Harry, "And, though it was foolish of me to do so, I found myself wishing for any answers that could give me an heir to my line. Then, one night, in my dreams, Kronos' soul appeared to me and offered to give me what I wanted most of all: all I had to do was give my body to his essence and let him control me through the act of conception."

"And you accepted," Harry whispered, "You remembered what you'd said: you'd do anything."

"That's right," James nodded, "And it was foolish, I know, but this is me we're talking about here, Harry: if anyone's the King of Fools, then it's me. Anyway, on the night you were born, there was this…this terrible storm and, for reasons I couldn't quite understand, your Mother was terrified. Then, at the height of the storm, she gave birth to you, but not before a bolt of lightning struck the house you were born in, which also gave you the mark on your brow."

"So it's not a scar from Voldemort?" asked Harry, earning a shake of the head from James.

"His power was drawn to that scar, but no," James answered, watching as Lily put her head in her hands, clearly hiding her shame at the information while he explained, "No, Harry: the so-called scar is actually a seal of sorts that was placed upon you by Zeus, hiding your Titan's essence from the rest of you and, in the process, making you marked by the power of the Big Three, which, spiritually-speaking, made Zeus your Father."

"But he wasn't," Lily finally spoke up, her voice sharp and cold as she hissed, "Kronos was: and the others let him know of that: it was because of what he did that Hades sent that Hellhound after you. When it bit you, it did a sort of werewolf thing and injected Hellhound Blood into you, marking you as Hades' claimed child as well as Zeus' though, in the clash of divine magic, your body couldn't withstand its power."

"That's where I came in," Thanatos added, watching as Harry looked to his left arm, the point where he'd heard the Hellhound had bitten him, "Your Mother begged me when she invoked the name of both Zeus and Hades: I answered her for Hades because my power would keep you off the radar of the Big Three and, at the same time, it would give you a chance to live your life."

"Unfortunately," James then remarked, indicating the ceiling, though Harry had a feeling he was actually pointing to Olympus, as he explained, "The Three weren't done there: Zeus had made his mark, Hades had left his curse-d blood and that just left one: Poseidon."

"And he made his mark too," Lily continued, moving to Harry before she touched a spot on his arm where, to Harry's surprise, he found it to be the same spot where the Basilisk had bitten him over a year ago. "He made it in the bite of a water-habituated creature that you nearly died to defeat and save the life of another."

"Of course, you can't actually die," Thanatos added, "But the deed was done nonetheless: following that, the Big Three agreed that though they all had their own kinsmen to be looking out for, they still had one clear objective: one of them had to claim you and keep you from your power as Kronos' child."

"Which is why Hades used his symbol to claim you in the Underworld," James reasoned, earning a look from Harry that could have been best described as confused disbelief before the man explained, "But then you held Zeus' symbol of power and you embraced the magic within it, which was thanks to Hecate taking that Horcrux out of you and Thanatos claiming you to begin with and, when that happened, the seal was broken and you became what you are: Harry James Potter, son of Kronos!"

For a moment, there was silence in the cabin before Harry groaned and, massaging his forehead, he muttered, "So, let me see if I've got this right because it's still confusing."

He started by pointing to James as he explained, "First, you and Mum had…trouble bringing a child into the world, so you were willing to do anything to make it happen?"

"Yes," James answered, watching as Harry then turned to his Mother before he continued.

"So one night, Dad…that is, Kronos, possessed James' body and you two…you know…"

"Yes," Lily replied, feeling a little amused and proud at how mature her son was being about this.

"After that," Harry continued, returning his attention to James, "Did you remember making the pact?"

"I did," James answered, "And I promised that I would raise you as my own, which is why I tried to do what I could to protect your Mother and you when he came to our home."

"But in the meantime," Harry continued, still showing confusion as he asked, "Zeus, Poseidon and Hades couldn't accept a half-blood son of their Father's walking the world, so they all sought to leave their own sealed marks on me any way they could?"

"That'd be the best way to put it."

"Then it was left to one of them to claim me and release their seals while…what? Finishing the job on the rest of my power?"

"Probably," James answered, knowing that it actually made sense when Harry put it like that.

"But the one thing they didn't count on was Father…I mean you, Thanatos, claiming me and making me your child, which also made me a Shadowborne, yes?"

"That's right," Thanatos agreed.

"So now that I've embraced the power of my three seal sources," Harry added, fingering the chain around his neck as he continued, "Which is thanks to Hecate blessing me and you taking the Horcrux out of me, I've now broken those seals myself and become the one, true son of Kronos, yes?"

"Yes," chorused the three, earning a slow nod from Harry before he turned to face Thanatos.

"So where does the prophecy come into it?" asked the young Shadowborne, "I mean it said I was thrice-blooded, so am I right in guessing that it didn't mean son of the Big Three, but something similar to that?"

"If you know the answer to that, why ask?" asked Thanatos, earning another nod from Harry.

"Just had to be sure," Harry replied, holding up three fingers before he pointed to each one individually, "Olympian, Titan and Sorcerer…yes?"

"Yes," Thanatos answered.

"That's why I'm the one to rule the three worlds."

"Yes."

"As Olympian and the son of the King, I inherit the right should I choose to make it so."

"Yes."

"As a Titan-blood, whose power comes from the same realms of darkness where Hades commands monsters and my true Father is sealed away, I inherit the ability to rule over that darkness, over death itself…which would also mean I rule you."

"That's right."

With an amused smirk, Harry added, "You don't seem so opposed to that."

"I'm not," Thanatos replied, "Because as I once told you, Harry: where life and death are concerned, there will always be a personification like myself: so if you desire to rule even my domain, then I will gladly assist you."

"And in the meantime," Harry continued, pointing to the third finger as he explained, "My god-like and Titan powers combined with the blessing from Hecate, which makes me more than just your average wizard, means that I also have the power to dominate the magical world and become a King of Magic itself, yes?"

"Three for three," James laughed, watching as Harry lowered his hand before he asked the boy, "So now we've that clear, what's your plan, son?"

"For now," Harry replied, "I don't know: if I make my moves too openly, then I'm more than likely destined to follow my Father's steps and wind up in Tartarus, so for now, I can only be myself. Besides, the longer I leave them upstairs waiting for me to make a move, the more fun I can have with all three worlds in the meantime."

"Meaning what, Harry?" asked Thanatos, earning another laugh from Harry as he shrugged.

"Truth, Thanatos? I have absolutely no idea, but…"

Here, he looked to the door of his cabin as he considered his next move before, with a smirk, he added to his point;

"I think I know where to begin…Olympus has their Big Three; maybe I should follow suit."

Not even Thanatos could make any sort of guess as to what Harry had planned next, but whatever it was, the primordial knew this much:

It was going to be interesting…

Son of the Shadows

"You…are…kidding me!"

"I wish I was, Percy," Chiron replied, a tone of sadness in his voice as he stood with the son of Poseidon at the edge of the lake, "But you were there on Olympus yourself: you heard the declaration."

"So he really is his, then?" asked Percy, looking back to where the roof of the Thanatos cabin could be seen, "He actually is Kronos' kid? How's that possible, Chiron?"

"Though he is sealed within Tartarus, there are many forms that Kronos can take outside of his body if one is willing enough," Chiron replied, his voice edged by pure sadness as he explained, "I knew of his essence as soon as he entered the camp, but when he declared himself a son of Thanatos, I was shocked, but relieved. Or I was until…until your return earlier today: if Harry comes into his full powers, then there's no telling what he could do."

"At least he didn't join forces with Luke," Percy sighed, earning a look from Chiron as he told him, "Luke was the Lightning Thief, Chiron: he did it to start the war and then take over when the dust settled, but Harry somehow used Zeus' own bolt to send Luke flying into the ocean. He also flew, you know: without sandals or wings or anything like that."

"That does not surprise me," Chiron replied, slowly pacing around the Poseidon cabin as he spoke, "Thanatos himself has the gift of flight though he uses his large wings of darkness to shroud the light from the day. As his inherent child, Harry would possess that power…that one and so much more besides."

"So what do we do now?" asked Percy, looking back again towards the black roof of the Thanatos cabin, "Because I'll tell you this much, Chiron: as a son of Poseidon, I'm already unnerved by Harry: he has a dark side to him that knows no boundaries and doesn't have a problem letting me or others know how he feels about us. He also managed to undo Medusa's curse, talk to a Hydra and have Cerberus treat him like he was its puppy: how can we fight someone with that sort of power?"

"By doing the only thing you can, Percy," Chiron replied, his eyes filled with wisdom as he explained, "You have to try and get through to Harry before it's too late: because, from what you tell me, it wouldn't surprise me if we are yet to witness his true power. Then there's the prophecy of his to deal with."

"What prophecy?" asked Percy, earning an alerted look from Chiron before the centaur shook his head.

"One that concerns him and him alone…and may just decide the fate of all our worlds."

With that, he left Percy alone with his thoughts, but as he was left alone, the son of Poseidon only had one thought running through his mind;

'Di Immortales: how in Hades am I supposed to get through to someone who hates me?'

Chapter 9 and Harry has learned one Hades of a confusing truth, but what did he mean by getting his own Big Three?

Also, can Percy get through to Harry before the son of the Titan King brings chaos to the worlds?

Keep Reading to Find Out

Next Chapter: As his fourteenth nears, Harry taps into his new powers to undo Zeus' damage and extends the olive branch to one who was abandoned; also, Sirius, Remus and Hermione learn of the truth about Harry and the Son of Apollo has a scary choice to make; and, to top it all off, we return to the HP world as another wizard learns of a determination…and a destiny that is tied to the son of Kronos;

Please Read and Review

AN: And there we go then: the truth – confusing as it is – is known and Harry has made his decision; from here on in, the AU elements really start to show and, because I'm on such a roll, I've also decided to carry on after Sea of Monsters and go back to the HP world;

Now, for those wondering about characters/events that happened in Titan's Curse onwards, I'll say that only a few things will be there as, when Harry completes the Sea of Monsters quest, he is going to be forced back to his own world where things really collide;

AN 2: Also, though I think it should be obvious what my plan is, I hope you like the thought associated with Harry building his own Big Three, one of which you should know already: as for the other one, well…what better ally than one who could be the enemy of his own flesh and blood?

No prizes for guessing who I plan on using for the third part of the Big Three either;