An-Peter has a twin, who the team are only just finding out about (Percy is the twin)

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The team did a massive double-take when two Peter's walked into the elevator. Except one of them was taller, and definitely a lot cooler looking, while the other looked as dorky as can be. Tony walked in and past the two bickerings on the couch, and turned on his heels and stared at the two. Peter was trying to read his book straight-backed, while Percy had an arm slung around his shoulders, his full body weight leaning on him. Peter had a sour look on his face, trying to ignore Percy. Percy was chattering aimlessly, a hit-eating grin on his face.

"Since when did Peter have a twin?" Tony said. Peter looked up, sour look still on his face.

"Since forever unfortunately," Peter said. Percy's face twisted, he pulled away to shove Peter, who faked horror.

"You wound me, Petey!" Percy shouted, making Peter's face twist again. Peter shoved him back, almost pushing him off the couch. They continued to bicker in good fun until Tony cleared his throat. Peter currently on top of Percy who was on the floor on his stomach, Peter was pulling his hair. Peter rolled his eyes before sliding of Percy and onto the floor, Percy jabbed in the side, Peter raised a threatening fist only for Percy to burst into laughter.

"You would never punch me!" Percy shouted.

"Yeah but I'll pull your hair again!" Peter shouted back, already crashing into Percy, they wrestled for a while until they burst into laughter and rolled away from each other. The team watched the exchange in confusion. Percy sat up to straighten his hair narrowing his eyes at Peter who was laughing at his face.

"Oh no! Did I mess up your hair your highness?" Peter said dramatically. Percy lunged at him, putting him into a head lock and noogying him. Peter screamed out his protests, "Say it or I'm not letting you go." Peter rolled his eyes.

"Percy is the all mighty twin, and the best big brother in the world," Peter said.

"And?" Percy said.

"Percy is all-knowing and all-powerful and I owe my sanity and safety to him." Peter said. Percy's face split into a grin before he let Peter go, who huffed and turned his back toward Percy.

"Aw come on Petey, I was just joking," Percy said, draping himself on Peter.

"You're mean," Peter said. Tony rose an eyebrow, the dynamic between the two was extremely confusing.

"So is someone going to explain what the hell is going on or?" Tony trailed off. Peter shrugged.

"May wanted us out of the apartment and he bugged me until I said he could come with me," Peter said, making a face before pushing Peter off himself and onto the floor.

"What? I'm not allowed to meet the people y baby brother spends most of his time with?" Percy said from the floor.

"Baby brother?" Sam said amused. Peter rolled his eyes.

"Only by ten minutes," Peter said.

"And yet you will always be in my shadow," Percy said, making Peter scowl.

"I get the better grades out of both of us," Peter said.

"And yet I get all the ladies," Percy said, pretending to tip fake top hate.

"And who out of the both of us actually has a girlfriend?" Peter said smugly.

"Well I'm not sure if I want a girlfriend if all girls are like MJ, she's scary." Percy said, this time Peter raised his fist for real, ready to punch Percy, "Okay okay, calm down. Don't go giving me a hit cause of your girlfriend." Peter nodded, dropping his fist in satisfaction.

"Ok this is trippy, you guys are like identical," Clint said. Percy and Peter shrugged at the same time.

"Not really. He's taller." Peter said.

"And he had greener eyes." Percy quipped.

"And his hairs lighter," Peter said.

"And his hairs curlier," Percy said. They shrugged at the team, "Although, I gotta say I don't have freaky spider-powers, no stickiness." Percy said, tapping his chin.

"Wait so you know? May doesn't even know." Wanda said. The boys shrugged again.

"Of course I do, the moment my baby brother woke up ripped and not needing his glasses I knew something was up and made him spill the beans," Percy said, making Peter roll his eyes.

"Yeah only cause you threatened to tell May something was up." Peter muttered.

"I wouldn't have actually told her though, she's scary as when she's angry," Percy muttered back.

"So wait, Peter has had a twin the whole time we've known him and we didn't know?" Bucky exclaimed, making Peter and Percy grin.

"Well, I'm very good at hiding things," Peter said, slinging an arm around Percy's shoulder, who grinned wide.

"Bullshit, I found out in one day you asked MJ out," Percy said.

"Well, I'm good at hiding you," Peter said.

"Well, you aren't good at much Peter," Steve said. Percy noticed how Peter's smile dropped and he looked down into his lap. Percy narrowed his eyes at Steve.

"You guys have like the same personality but like, look at you, your styles are completely different," Tony said, tugging Peter's sweater. Peter frowned.

"Yeah cause he thinks he's sooo cool," Peter said. Percy shoved him.

"That's because I am cooler than you," Percy said making Peter stick out his tongue.

"What do you want me to say? I'm not one for fame." Peter shrugged, Percy nodded.

"You don't need to remind me, I was your only friend until you met Ned." Percy said.

"Well, you're the twin everyone likes. You're more charismatic, fun and social." Peter said, shrugging afterwards, "I need to go to the bathroom, don't let the team intimidate you, I can take all of them on my own." Peter said, standing up and leaving the room. Percy looked up at Steve with an unreadable look on his face.

"You know I've always been the typical big brother, beaten a couple kids up cause they made fun of my baby brother. I won't hesitate to beat you up too if you say something like that again. And don't pretend you don't know what I'm talking about. He's come home in tears because Captain America is bitter Spiderman is stronger than him. You're nothing but a bitter old man, who shouldn't be allowed to call himself a hero.

"You say one more bad thing about Peter and I'll give you the beating of a lifetime. And I won't need powers to do it. I'll protect Peter wit my life, he's always gonna be my baby brother. So lay off him, he's had a hard life." Percy said, leaning back onto his elbows. The room was quiet, no one had ever stood up to Steve. Tony started laughing and clapped Percy on the back.

"I think I like you, you can come round to the tower as much as you like. Anyone you stands up for Peter is a friend of mine." Tony said. Percy nodded.

Peter came running back into the room, an excited look on his face. He ran right up to Percy and pulled him up off the floor, shaking him by his shoulders, "Percy, Percy! I just realised that I can crawl on the ceilings here!" Peter shouted.

"No, you can't. I never said you were allowed to do that." Tony said. Percy waved him off, wanting to hear what Peter had to say.

"What are you trying to say?" Percy said, rolling his eyes when Peter started shaking him again.

"You know how when I first got my powers you wanted to know what it was like to be upside down on the ceiling?" Percy nodded, catching on, "I can take up on the ceiling here because they're high enough!" Peter exclaimed. The team watched as Peter carried Percy effortlessly up to the ceiling, keeping him steady as he walked with him on the ceiling.

"This is so awesome!"