(A/N) I'm glad you all like it! Sorry I haven't been updating; I'm working on a few novels that need tending to. I hope this chapter satisfies you!

Disclaimer: I do not own PJO or HOO and there will be a lot of OOC when it comes to Percy since, you know, he's a demon.

-Ω-

NOTE:Due to the fact that Percy is a demon and not his usual demigod self, I had to MODIFY BACKSTORIES in order to solve the plot holes that would have risen had they stayed the same. I'm very sorry for the inconvenience.

CHANGES INCLUDE:

Nico not being from the past, his mother killed in a hellhound attack and his sister still having joined the hunters and suffering the same fate she did in the books.

Nico in the place of Percy during all his adventures (Being accused of being the lightning thief, going through the sea of monsters, defeating Kronos and Gaea, being swapped with Jason, etc.)

Nico never went through Tartarus except in Percy's place with Will at his side

Hazel, in the place of Nico, had been flat-out captured (no Tartarus or anything) and put in a bronze jar so they had to go to the rescue.

Annabeth had been the ambassador and had not told Nico about his true belonging at the Greek camp.

Blackjack is Nico's, however Mrs. O'Leary is still Percy's *dark side shimmy*

Will Solace replacing Annabeth as the companion **Solangelo Included**

Annabeth still keeps her achievements despite her obvious downgrade in importance (defeating Arachne in Mark of Athena, etc.), however it is Will and Nico that go through Tartarus instead.

All other backstories will remain the same.

-Ω-

Nico di Angelo was somewhat of a legend. He was the savior of Olympus twice over; one time when he battled Kronos and the titans and another time when he defeated Gaea and her army of giants. He had accumulated quite a reputation, and had even turned down immortality a few times, which normal teenage boys at his age couldn't really put on their résumés. However Nico di Angelo was not normal. No, he was far from normalcy, partially due to the fact that his father, Hades, was the god of the undead, as well as the underworld. Driven by his determination to make his deceased mother and sister proud, Nico strove to make sure that everyone in both camps was treated equally, since he was so used to being discriminated due to his bloodline. So far he had been succeeding considerably. However there was one thing that Nico could simply not manage to achieve, and that was the tracking and slaughtering of Perseus. Older than time itself, the demon had evaded capture for millennia, and now Artemis had disappeared once more.

Nico recalled how he, Will, Grover, and Thalia had rescued her from Atlas; how he had held up the sky, like being crushed by the weight of a thousand trucks, though the grey streak in his hair that he had earned from it had long since faded. It seemed like such a long time ago that the Titan War had been an issue. Heck, it seemed like such a long time since the Giant War had been an issue. Everything was peaceful at the moment, and that was how Nico liked it, unless you counted the fact that one minute Artemis was on Perseus' trail and the next she seemed to have disappeared off the face of the Earth.

It was late. Very late. Nico was pouring over piles upon piles of books, textbooks, almanacs, scrolls, and ancient Greek and Roman writings, but sadly mortal books weren't necessarily reliable, and the Greeks and Romans weren't even remotely acquainted with demons. He couldn't use the Internet, since it was basically sending up a firework that spelled out 'COME AND EAT ME, MONSTERS' when it exploded, and apparently hitting the books wasn't really working well for him. He had even tried consulting The Supernatural Ultimate Guide, which he had borrowed from his totally obsessed sister, Hazel, when she had visited him last week from her station at Camp Jupiter. But even then he wasn't sure whether all the stuff about salt and exorcisms was true, for he didn't want to throw salt at Perseus when the monster was attacking him, only for it to simply irritate the beast and not repel it. It was very difficult scrounging hard evidence from a sea of faux facts and false spells, like trying to find a needle in a haystack.

The dim candle cast dancing shadows upon the printed words, but with Nico's tired state they seemed to blur together. "Ugh…" the son of Hades moaned, rubbing his drooping eyelids. "'In Revelation, Abaddon is the king of the abyss who commands an army of locusts'…blah, blah, blah, blah, blah…'The name Abaddon is derived from its Hebrew root, meaning 'to destroy.' It is used six times throughout the Wisdom literature in the Old Testament'…blah, blah, blah, blah, blah…nothing on how this Abaddon guy was killed, of course." The son of Hades tossed the book aside, where it joined a number of other books that he had proven useless.

"Why are you up this late?" a voice hissed and Nico clumsily scrambled to his feet, stumbling for a few steps only to be caught by waiting arms. Nico breathed in his boyfriend's scent, relaxing into his chest. "Lights-out was five hours ago. I wake up to get a drink and I see a light on in your cabin. You're lucky I didn't get eaten by the cleaning harpies. I hope I came all the way here for a good reason."

"Research." Nico replied groggily and went boneless, causing Will to have to support all of his weight, though the son of Apollo didn't seem to mind very much. His blue eyes sparkled in the flickering light of the single candle.

"You find anything?" Will asked, and the son of Hades could almost hear the smile in his voice.

"Well Sam, Cas, and Dean can't really help me since they don't effing exist." Nico sighed in reply. "How are condiments supposed to repel demons? Really now, salt? It, meaning Perseus, is going to shred my throat before I can throw salt in its general direction."

"Better not tell your sister that or she'll flip a wig." Will chuckled in reply, hoisting the shorter boy up so that he was basically carrying him.

"Whatever. Pretty soon you're going to tell me to text Sherlock and that the Doctor will fly down in his TARDIS and take me on an adventure."

"Now you're just trying to anger all of the SuperWhoLock fandom. And you're not going on an adventure with the Doctor without me." But Nico was already fast asleep, snoring soundly with his head cradled in the crook of Will's neck. The son of Apollo's grin widened and he sighed, stepping around the small shrine of bones and jewels and placing Nico onto the coffin-shaped bed he had claimed, tucking the boy into the blood-red sheets. Will considered staying, but he knew that his absence would be noted, and one of his half-siblings would no doubt rat on him. He gave Nico a small kiss on the cheek and slipped out of the cabin like a shadow, leaving the candle to flicker and sputter out.

-Ω-

Perseus liked to refer to himself as a 'he' and not an 'it.' It was very offensive in his opinion, and, had he been capable of feelings, they would have been quite hurt. However he was not, indeed, capable of having feelings aside from hunger, rage, anger, spite, irritation, and wrath. Perseus stalked through the underbrush like a panther, his eyes searching the ground for any signs of life. There was a footprint here, a disturbed patch of dry leaves there, and even a pile of deer excrement every so often, but aside from that the animals that had left the marks were nowhere to be seen. It was exceedingly hard to hunt animals due to the fact that every one of them within a one mile radius seemed to sense him before he actually arrived. This was the reason, aside from the fact that their blood and flesh tasted the finest, why Perseus preferred to hunt humans.

However Artemis was a picky eater and decided that throwing up all over him was better than politely declining his offer to share his previous kill, which had been a young boy at the age of seven. Young blood was always the best, yet despite this the moon goddess seemed to think of it as horrifying and savage. Perseus had been quite taken aback; he'd even been gentleman enough offer to share the liver, which was by far his favorite part. Artemis had not been very impressed. What did it take to woo goddesses these days? Sure, any female teenage human let him inside without hesitation when he flashed his pearly whites (his fangs safely concealed by the Mist) and exchanged a few smooth words, but he liked to go for the big game, since mortals were so easily fooled.

Back in his prime, when Christians were still being persecuted, all he had to do was offer shelter and humans, both male and female, fell right into his awaiting arms like damsels in distress. However he even picked up a Roman goddess or two with his charm, since back then they had no idea that demons even existed; they supposed Christian tale was just a myth, which was very amusing due to the fact that now almost 2,100,000,000 people take part in Christianity and another 14,500,000 take part in Judaism. So therefore, approximately 2,114,500,000 people believe in demons. And about, and this is just as guesstimate on Perseus' part, zero percent of mortals actually worship the gods anymore, though this isn't including demigods. The practice has simply bitten the bullet.

It had proven quite difficult to try and get Artemis on his side, so Perseus had simply given up and was now nursing a very, very ugly grudge. It didn't help that Artemis was a maiden goddess. He would've torn her to shreds right when he confronted her, but the demon needed her as blackmail for a ransom that would leave the gods undisturbed, and possibly save the entirety of the world from human filth. He recalled revealing his plan to Artemis, since it was by far villain obligation to make known their master plans to their hostages, however this time the hostage wasn't going to be able to tell the tale in time, nor would they be saved by a hero in shining armor.

"Get me out!" Artemis bellowed. "When my hunter's get here they'll-"

"The image is in mind already. Now shut up and let me speak." Perseus snarled, his fangs flashing in the dim light of the setting sun. Artemis fell silent. The moon goddess was standing in the center of a pentagram drawn with her own blood as well as Perseus'. It was a ward of protection; nothing could come in or even smudge the lines to allow escape, however nothing could come out, either. The demon was holding above her head the threat that if she was not behaved, then he'd banish her to Hell with a flick of his wrist. Artemis, knowing nothing of demon lore, was terrified that Perseus would level that punishment upon her head. The demon, however, was bluffing. Majorly. Had he had a book filled with correct spells and incantations, then maybe it would have been possible, but all those books were in museums scattered across the globe, so guarded that even he would have his neck on the line if he tried to steal one of them.

"I don't want money." He spat out the word as if it were poison, circling around the edge of the pentagram. Artemis' cold silver eyes followed him indifferently and she had to turn a little to keep him in sight. "Nor do I want fame or followers…"

"Then what do you want?" she hissed, her words as potent as a snake's venom.

"To be feared. I want mortals and demigods to cower in my presence and not go about as if I were one of them. I want them to fear me even though they don't know the reason. Do you know what it's like to be the last of your kind?" Perseus growled, a low, guttural sound that sent a chill straight into the moon goddess' heart. Despite this, she attempted to remain apathetic.

"I'm not acquainted with it. Then again, the gods will always be around. Your fate however, is already decided." Perseus cackled at this empty threat, which caused Artemis' poker face to waver ever so slightly.

"Did you consult your little oracle? Oh, what about your brother, Apollo? What did he say? I'm dying to know." The demon feigned fear, his voice a mocking impression of a teenage human girl. "Oh, I'm scared now! Zeus is going to come after me with his little lightning toys and zap me to ashes."

"Not before I'm done with you." Artemis replied scathingly, her aura gradually beginning to grow ever so brighter. "I'll make your teeth into a necklace, throw your flesh and bones to my wolves, use your skin as a cloak, use your hair to make my bowstrings, and keep your eyes as trophies."

"What about my package?" He pointed to his crotch area, his eyes glinting with a sick sort of humor. "Hope you're going to keep that, too. It can be your special little award."

"Enough!" Artemis bellowed and shot to her feet. "Fear cannot be imposed in such a way. You shall never be able to get the things you desire!"

"But, it is not about what I want. It's about what the world needs." Perseus replied, his twisted smile never leaving his face.

"And what does the world need?" Artemis inquired, scowling, though on the inside she truly had no intention of figuring out what the demon was referring to.

"I was hoping you'd ask that." His grin only widened, and Artemis could imagine his fangs grinding bone and flesh into dust. "You see, Artemis, being the last of your kind is quite lonely…" The moon goddess abruptly cut him off.

"Are you implying that I marry you? Certainly not, you wretched beast! I am an eternal maiden, and even if I was to marry I would never exchange vows with the likes of you!" she shrilled. She ran towards him like a bear charging towards its next meal, but only crashed into an invisible force that marked the edge of the pentagram. She slammed her fist against the barrier, a blow that could shatter a cement block into a million pieces, but it stayed intact. "You contemptible-"

"Beast? Monster? Demon? Savage? Lady, I've heard them all." This only made Artemis' anger spike. "However, much to your disappointment, I do not plan on marrying you. I'm lonely as in I am not surrounded by others of my kind." Artemis' stomach dropped down like a leaden ball, as if she had just went over a huge drop in a roller coaster. She knew exactly where this was going, though she feared that saying it aloud would only confirm that it was truly happening. "In exchange for you." Perseus' green eyes slit like a viper's. "I want the key to Hell. My brethren shall return once more in their full glory, and anyone or anything that stands in my way can go join Lucifer in the fiery pits for all I care."