Disclaimer: I don't own anything you recognize as canon.

Tony

Leo picked up the hammer.

I couldn't believe it. He didn't even know what that meant. He apparently used it to threat?

When I first met Leo, he seemed like a normal teenage boy. But now. What had he done to make him worthy of picking up the hammer?

I had just gotten off the phone with Pepper. The pizza was on its way up and the Avengers were all going to the kitchen. Except me. I was heading to Leo's room to get him. I wanted to see if I could get him to talk about what he had Thor hide.

Thor. He listened to Leo. He doesn't listen to others like that. Heck, he only listens to orders if he agrees with what he's doing. But the way he listened to Leo, it was like he was almost… scared? That worried me.

Praying that the doors were no longer locked, I turned the doorknob to his room. Thankfully, the door easily opened.

"Leo?" I called as I stepped into the amazingly decorated room.

The closet, bathroom, and workshop doors were open. Peeking inside his closet, I saw a singular row of clothes with a suitcase nestled in the corner. Was this all he had? With a pang in my chest, I realized as a teenage orphan, this would be normal for him. I made a mental note to make a donation to the nearest foster home.

Since the door was open, I assumed Leo wasn't in the bathroom, so I moved straight to the workshop.

Looking around, I saw that the area was being used pretty well. Tools and contraptions randomly littered the table. The black spinny chair was next to one of the tables, and was stained with grease. However, Leo was nowhere in sight.

I was about to leave when Leo's laptop caught my eye. The screensaver that is. Leo must've changed it. Curious, I went over. I was looking at a picture of eleven teenagers, all looking close. A blonde boy with a stethoscope around his neck, a blonde girl hugging a book, a Native American girl with choppy hair, another blonde boy with a little scar above his lip, a goth looking boy, an African American girl, an Asian boy, a girl with a purple cape, a boy with black hair and bright green eyes, and a girl with a braid holding a flower. In the center of them all was Leo.

They were all smiling, seeming to be in mid laugh.

I furrowed my eyebrows. Who were these people? Leo's friends? Fellow foster kids?

I printed out the picture so I could show Pepper. While I did, I noticed a flash drive plugged into the computer. I had a sudden urge to take it. And I did. I know, I know, it was wrong but if Leo was an up incoming genius, than I should really see what he was working on, maybe give him some tips.

After retrieving the picture I told Jarvis to tell Leo to come into the kitchen.

I stashed the photo and drive into mine and Pepper's room. Then I made my way downstairs as well. Everyone but Leo was there when I came in, even Pepper, happily munching on pizza.

"Where have you been, Tony?" Clint asked as I walked in.

"Trying to track down Leo." I said, sitting next to Pepper and picking up a piece.

"Already tired of the kid?" Natasha asked.

My eyes widened. "Oh, no! It's just. He's keeping something from me."

"He's just a teenager. You're overreacting. It's probably just a secret girlfriend or something." Natasha said, bored.

Steve and I shared a look. We both knew that it probably wasn't a girlfriend.

"I wonder if he does have a girlfriend." Pepper cut in, looking thoughtful.

"He does." Steve said shortly. Everyone looked at him weird. How would he know if Leo had a girlfriend?

Leo chose that moment to bounce in the room. "Yes! I'm starving!" He grabbed a huge slice of meat lovers and sat on Pepper's other side. Pepper beamed at him. I could already tell she absolutely adored him.

Steve and I shared a look. I made a motion as to say if I should bring up Mjolnir. Steve shook his head not now. Talk later.

"So Leo. A girlfriend huh." To my surprise, Natasha said this. Leo spit out his pizza, eyes wide. His gaze settled onto Cap, who looked at him innocently. Slowly, Leo nodded.

Pepper squealed. "Oh, we absolutely have to meet her, Leo! I bet she's wonderful."

He gave her a nervous smile. "Yeah, she's pretty great. You actually remind me of her, Aunt Pep." Pepper beamed again. I swear, that boy has a way with words.

Bruce was so silent before, I jumped when I heard him ask, "In what way?"

Leo turned and smirked at me. "She doesn't let me get away with anything." The table laughed.

A comfortable silence came as we finished off the pizza.

"Well, I promised the girlfriend I'd call her. Goodnight people."

Everyone called goodbyes. Leo hugged Pepper, who looked like she was about to melt. Then to my surprise he walked over and hugged me too. Pepper looked like she was about to burst with adoration. I awkwardly patted him on the back.

Leo laughed. "Don't worry Uncle T. You'll get better at hugs." He gave me one last grin and waved at all of us. Then he bounced out of the room.

After getting rid of all the trash, I had to explain to Pepper why we no longer had a fridge. Then I snuck back up to my room and nabbed the flash drive. I could hear Leo talking through his door.

I headed up to my workshop and plugged in the drive.

There must have been a hundred folders in there! It went from most recent, and at the very top the file read Anti-Monster Virus. Was that some sort of code?

As I kept looking at the titles, I grew more and more confused. Argo 2? Asclepius Cure? It didn't make any sense.

And something else. If Leo never had a laptop of phone before, how did he have a flash drive? Or put his name on the big screens of Times Square for that matter.

I felt a pit in my stomach. Leo was a genius. There was no doubt about it. According to him, he was good enough to nearly hack Jarvis. What if he did hack Jarvis and get him to think he was my nephew? Blood samples weren't typically on profiles. What if he was trained by HYDRA?

I really didn't want to believe it, but there were so many empty holes. My thoughts went to the picture. Were those kids HYDRA too? Were they some kind of weapon?

I immediately felt bad for thinking that about my nephew.

"If he is your nephew," Part of my brain argued.

"Shut up." Another part said.

"The facts are all there."

"It can't be."

"Why not."

Fingers snapped in front of my face. "Tony?"

Steve stood in front of me, looking grim.

I shook myself back to Earth. "Sorry. I'm here."

"Good. I wanted to talk about Leo. Somethings obviously going on with him."

"No dip, Sherlock."

"Tony. This is serious. He picked up Mjolnir. Picked. Up. Mjolnir. And Thor seemed almost scared of him."

I sighed. "I know. So what do you think? HYDRA?"

"No."

I turned to face him, confused. "Huh?"

He rolled his eyes. "Even if Thor is scared of the enemy, he goes for it. This fear is more of a respectful fear. And have you seen Leo's eyes?"

I never thought of fear like that. And his eyes? "Um, they're brown?"

"They're not a teenager's. They're unreadable."

I gasped. "Like Natasha's and Clint's?"

Steve looked grave. "They're worse than theirs."

"But… what could've happened? To not only get those eyes, but to also have Thor's respect like that? You'd think he was Asgardian."

Steve's eyes widened at that. "What if he is? How much do you know about Leo's parents?"

I racked my brain to remember. "Um. My half-sister Esperanza Valdez died. The dad left before Leo was born."

Steve looked satisfied. "His dad must be Asgardian then."

The more I thought about it, the more sense it made. "I have a nephew that's half alien. Sweet!"

Steve scowled at me. "Focus, Stark. We should tell Thor we know Leo's secret."

I yawned. "Whatever you say, Grandpa. Just in the morning, kay."

Steve nodded seriously, ignoring the nickname.

Tomorrow was going to fun.