Percy looked to Tony for an explanation. The Playboy however, was smirking up a storm.

"So," he drawled," You're back! Want to tell me why you were Americas Most wanted kid in fifth grade? Or is it too 'painful' to talk about falling off the Chicago Arch?"

Percy glared at the mortal, "You should be careful, Mr. Stark. One day that curiosity and mouth of yours' will lead you to ruin."

Tony stood up from the frame he was leaning on, "Are you threatening me?"

Percy smirked," No, just giving you some advice."

A door opened and the two saw Bruce and Clint come out and look between the two.

"What's going on?"

"Percy, why do you have a gold sword?"

Percy then realized that he still had Riptide out and recapped the pen, making his new comrades eyes widen. He put it in his pocket and sat on the couch, not sure what to say.

"Tony?" Clint asked.

The man of many things snapped out of his trance," Now I have to see how that works."

Bruce went and sat across Percy," What was that?"

Percy glanced up at him and then at the empire state building. No one seemed to breathe as he turned back.

"A family heirloom," Percy said simply.

The others were still very confused and Percy was as well, but the sun was rising. They dispersed with uncertainty toward the demigod, who just had his head in his hands. He couldn't sleep as he had been plagued with nightmares, which were never a good thing in his life.

It was mid-morning when Percy was surprised again. The demigod was just about to fall into a fit full sleep when a voice called him. It scared Percy so much that he nearly took out the newly installed speaker.

"I am truly sorry sir, but Mr. Banner wishes to see you."

Percy spun in a circle, "Who are you?"

"I am J.A.R.V.I.S., I am an A.I. that Mr. Stark has created and installed into the Tower and his home."

Percy groaned and fell back on the bed he had been lying on. He looked up at the ceiling, "Remind me to never let Leo hear about you."

"Noted."

Percy then got up and dressed himself for the day. Wearing faded jeans and a Camp Half-Blood shirt, he went down to the lab to see what Bruce wanted.

As he entered the lab, Percy was sure that if he had brought any of the Hephaestus or Vulcan kids, they would have fainted from excitement. Seeing all the tech made his head swim. He saw Bruce and Tony at a table discussing something.

"Bruce?" Percy said loudly, "You said you wanted to see me?"

The scientist faced him and nodded," Yes, Tony and I would like to know what you are."

Percy sighed and scratched the back of his head, "Trouble. It runs it the family."

Tony raised an eye brow, "You look terrible kid."

To tell the truth, that was an understatement. Percy hadn't slept well for over a week and it had affected him physically and mentally. He had bags under his eyes that rivaled that of Nico's, and every little sound made him jump. Or, it nearly did. Percy was happy to say that he wasn't that far gone yet.

"Thanks Stark," Percy mumbled, "That's real helpful."

"Seriously kid, call me Tony," Stark said as he handed him a bag of dried fruit.

"Then call me Percy," Percy said, "I haven't been a kid in a long time."

Bruce glanced over at this, concerned for the young hero. He couldn't have been older than seventeen, barley eighteen. The doctor paused in his work and came over.

"Would you mind if I took a blood test?" he asked as Percy downed the fruit.

"No, you won't find anything though."

Tony huffed, "Then why would Fury let you on the team?"

Bruce rolled his eyes, "Tony, we're hardly a team. We stopped one alien invasion. Barely."

"Well I think we did well. No one was enslaved," Tony started, " And we beat up Loki."

Percy winced, not sure how the trickster's name affected the world. Nothing happened, and his actions went unnoticed as the scientists bickered. Apparently, since the Norice god's had their own planet, that rule didn't apply.

"Anyway, Why'd Fury let you in on everything?"

"My family need's a mediator," Percy said with a shrug, "After my cousin died, they needed someone else to take over. No one's lasted past eighteen that wasn't in the Empire, and Jason's busy with that."

"Empire?" Tony raised an eyebrow, "Like…The Roman Empire? That can't be good."

"No, it's actual really important," Percy said, "I would tell you more, but I'm still waiting on word from my uncle and father."

"I thought your dad was dead," Tony said as Bruce hit him.

"No," Percy smiled, "Not dead, just…at sea."

Steve Rogers sighed as he rolled his bike into the Towers garage. He wasn't too excited on being back in New York, but Fury had told him to come back. Something big was going to happen. Thor had called in and was returning, and he didn't seem too happy.

Still, putting up with Tony was going to be hell on Earth for the Super Solider. They had found a little peace with Colson's passing, but he was still an egotistical asshole in Steve's books. Maybe Bruce or Clint was in, that would make his life a bit better.

However, a teenager was not even remotely close to what Steve was thinking. Nor was Percy expecting to see one of the greatest heroes of all time. An old hero, and a demigod. He never knew, but the rest of them did.

"S-sir!" Percy said as he jumped up from the couch, "Sir! I-it's a pleasure to meet you!"

"Now son," Steve said as he sat down, " I don't even know who you are. You don't have to call me sir."

"O-of course si- I mean," Percy swallowed and held out his hand, "I'm Percy, Percy Jackson."

"Steve Rogers," the Captain said as he shook his cousin's hand. But, he didn't know that.

"I just- Wow, I mean," Percy was at a loss for words, "I have so much to show you! I mean, I have to take you to camp and Nico and you could talk about stuff back then-"

"Easy son," Steve said, "You're going to hurt you self! Now, what's this about a camp?"

"It's, well," Percy scratched the back of his head, "The easiest way to do this is if we go down there. I mean, you're like me so you'll get past the barrier. And Annabeth is-"

"I'm still not fallowing you," Steve said as he rubbed his eyes.

"S-sorry, ADHD," Percy said as he sat down, "It's just, Ever since I learned about my dad and all the great ones, I never thought I would meet one of them."

"Great ones?" Steve asked.

"Great heroes," Percy said, "You're a hero, more than you know. It was our family that started WW2, Sorry about that."

"Our family?"

"Yeah…" Percy sighed, "You're my cousin. Phil's cousin too, by the way."

"Phil? Phil Colson? We were related?" Steve was shocked to say the least.

"Yeah," Percy smiled, "You actually have a big family. Most are cousin's so they don't really count in some aspects, but your cabin is the beast and smartest."

"My cabin?"

"Yeah! Tomorrow I'll show you!" Percy was so happy," Your sister's been bugging me about you since yesterday any way. She flew in last night."

"I have a sister?!"

~\/~

AN: As you guys can guess, I'm making Steve a demigod. Athena was the best choice because of his battle plans. Tony may be the leader of the Avengers, But it's Steve that keeps them from killing each other.