Long ago in Ancient Greece 8 demigods were born. Destined for blood and glory since the gods came to be. Mazal son of Zeus, the leader. Vetas daughter of Athena, the strategist. Xarse son of Apollo, the marksman. Avara daughter of Hades, the shadow. Veliri daughter of Ares, the carnage. Elras son of Hermes, the thief. Lydia daughter of Hephaestus, the builder. And finally...Perseus son of Moros, the doom.
A/U

When the eldest of the Olympians were born a prophecy was delivered to a council of titans. The prophecy was disregarded and forgotten by all but one. Kronos the Titan Lord became paranoid of losing his position of power, and asked Mnemosyne to wipe the memory of the prophecy from the rest of the titans and herself included.

Kronos in turn started swallowing his children, but he couldn't find his youngest son Zeus. One day his wife brought a bundle of blankets to him and requested to eat him as quickly as possible. For the love he had for his wife he swallowed the bundle unaware it was a rock.

Zeus who was hidden was training constantly and when he was 17 years old he sought out Metis and asked her to help him get his siblings out of his father. She concocted a potion to make him disgorge the gods. His mother, Rhea told her son to pose as a cupbearer and so he did and Rhea asked her husband to accept this "mortal" cupbearer for a short time to which he accepted. This gave Zeus the opportunity to slip the potion in his cup.

The moment Kronos finished puking Zeus grabbed his family and flashed out. (All of the Olympians were in there including Zeus' children.)
As they reappeared in a cave he looked at his family with happiness and they in return looked at him with gratitude. "We cannot defeat our father and his forces alone. We must seek out mortals to make demigods. Only 8 shall be born" Zeus stated. This made many gods confused and he explained that Kronos was given a prophecy that foretold eight demigods being born to ensure the gods reign. He then told them the prophecy

" 8 demigods born to ensure the gods reign
With difficult lives full of pain
5 will perish, 3 will survive
Lives will be lost, many will die
Doom and doom alone must fight the Titan Lord
His life ended with a thrust of a sword"
There was an uproar of shock and approval. They now knew what they must do to win the war. The 14 Olympians sat there, pondering what to do next until Hestia, the eldest and wisest Olympian spoke up for the first time "I believe we should make demigods but tread carefully, we may be chosen to win the war but fate can be cruel to arrogance"

The council looked stunned and hopeful at the same time "Why didn't father kill us" Hades inquired. Poseidon then answered "I don't know either brother, maybe he grew arrogant and doubted we could overthrow him." At this there was a collection of nods throughout the council, but some of them, the wise gods knew that there was an ulterior motive and whatever it was it sure as Hades wasn't anything good.

At that exact moment a child was born, a demigod named Perseus. The first of his kind and had more power inside him than any minor god, even matching that of an Olympian.
He was a son of Moros and a mortal farmer named Lyanna, she was so beautiful that many thought she was a goddess. His father Moros watched as his son slept, the mother cradling the newborn as if she let up for even a second he'd disappear.

~Time Skip~ 2 years
Moros often checked up on his young son from time to time, yet Lyanna believed that he had abandoned her. This led to her crying herself to sleep some nights but she was careful to not wake the baby. On his sons second nameday he brought his son a cloak, infused with the powers of the hearth, a gift from Hestia, the only Olympian aware of Perseus' existance. Hestia had told Moros if he wears the cloak it shall fill him with his fondest memories and shall calm his mind. And that night for the first time he saw his sons eyes open, and he gasped. His eyes looked nearly identical to his, red with black specks. In fact he also had the same hair as him, it was dark almost as if his hair was made of darkness, which reminded him of Erebus.
Lyanna and Perseus were the only things that kept him from joining the titans. If they won they'd kill Lyanna and either kill his son or turn him into a puppet for their own bidding. He was drawn from his thoughts as a door swung open. "I know you're there, show yourself" she said. He did as she asked and walked from the shadows with a smile on his face. It quickly dropped from the look in her eyes, which were orbs of clashing emotions of grief, sadness, happiness and the most evident rage. Lyanna stormed up to him and started throwing punch after punch into his chest repeatedly hitting him until she collapsed, crying into his chest. He immediately felt guilt, how could I do this to her, the girl he loved? How could I make her feel this way he thought. He immediately vowed to himself that he'd come around more often.
~Time skip~ 6 years
The field was filled with the sound of wood smacking wood, wooden swords to be precise. A man in his mid twenties circled around a boy no older than 8, yet the boy was keeping up with his older foe. The man slashed towards the boy's left side but feinted at the last moment and as the boy went to block the man altered his swords path towards the boy's right side, and with amazing speed unnatural for a boy of 8 he parried the man's strike. He hardly seemed surprised, like he was used to the boys speed. The man called over "Good work Perseus, you grow stronger everyday." Perseus then retorted "And you're growing older everyday". Perseus and the man started laughing together as if they jested often. A woman in her late twenties walked towards them laughing at their antics. She called out to the boy first "Percy, sweety someone's here to see you" Perseus then bounded up as fast as he could manage asking many incoherent questions at once and when he realized his mother and father were having a silent conversation again he ran towards their home, a nice cozy house right by the coast. He was elated to see who came to see him, many names came to mind but he had a few he wanted it to be. Hestia his best friend, Perses who he was named after, or Menoetius his uncles best friend who always brought him something when he visited.
He bolted inside to find a man and lady. They were both radiating a fierce power; calm but immensely powerful. The man had black eyes, black hair and wore black armor which had engravings of an ancient language far older than any he recognized and what looked like a raven as dark as an endless abyss. While the lady had eyes as black as night with what looked like stars twinkling in them. She had armor on identical to his but there were what looked like constellations on it, always moving as if it was alive. They regarded him as if they had finally achieved something.
The man spoke first with a warm smile adorning his face "Hello I'm told they named you Perseus." He answered politely "you have the right of it... Uh sorry sir but I don't think we've met." That is when the lady stepped closer and spoke for the first time "You have met us only once I'm afraid when you were a child, a few days old actually." Perseus was slightly taken aback by that information. He quickly replied "Good to meet you again, who are you though?" The man looked nervous for some reason then he started looking around the room as if he were afraid something was going to happen. "That's a tricky thing to be sure Perseus, we cannot tell you our names I'm afraid but know this: if you are ever in peril or need help rub this coin and speak the phrase Καλώ εμπρός το σκοτάδι and we shall help you in any way we can. You can only use it once, remember that Perseus." And with that said they disappeared leaving behind wisps of shadows and a trunk radiating raw power. He stepped towards it slowly opening it and he gasped. There was the most beautiful armor he had ever seen pitch black with a red raven over the heart and a helmet with raven wings on the side, as sharp as anything he'd ever felt and then some. He pulled the armor out, elated and he set it down on his bed and went back to the trunk. There were three other things in there: a sword in its sheath, a bow with a filled quiver, and lastly an animal he'd never seen before, it was small but you could feel the heat radiating off of it. It had black scales and was about two feet long, he was fast asleep and snoring. Smoke coming from its nostrils and a tail curled around its body. He'd heard of these creatures and thought of them as purely mythological, a beast from Chinese stories fabled for its power and the destructive force it could create. It was a dragon and although he didn't know it then, their strings were interwoven.
~Unknown place~
Three hooded figures sat around a table one had shears another had a black string and a golden one ties together and the last had a confused face. She said aloud "This is peculiar and most intriguing, yes indeed it is. Good luck little hero your life will be filled with agony but the outcome depends on you. For the first time ever someone's fate is unknown, you are special child I feel it."