This is a crossover between Percy Jackson and The Mortal Instruments WARNING there may be spoilers. POV stands for point of view I don't upload very often, sorry about that.....

Percy and Annabeth get sucked into a black hole, sending them back in time into their 12 year old selves.

What happens when Nico Di Angelo accidentally texts Tony Stark? ~~~ Be prepared for hilarious drama, very weird author's notes, and lots of fanart and memes. There are also a few random chapters at the end of this that are basically one-shots related to the story. ~~~ DISCLAIMER: I am not Rick Riordan nor Stan Lee, which means (unfortunately) I do not own Heroes of Olympus or the Avengers. ~~~ Btw, this has Solangelo in it, so if you don't ship it, don't read this. ~~~ Why did it take me thirty minutes to come up with that? ^ ~~~ (Completed May 17, 2020)

Nico didn't see why Hecate wanted him of all people teaching her pets. They went through a war, they don't know how to cope, she said. I want you to help them with that. Besides do to your experience in the underworld your one of the few demigods who know about my wizards. Besides the only position open is Defence Against the Dark Arts. I will make you look older and give you more knowledge. I'm sure you will be an excellent teacher.

It was a couple years after the Battle of Hogwarts. A lot of people were finally getting over their shock of the war. Well, most. There were still plenty of people who were still grieving their friends or family's or people they just knew's death. George, for instance, hasn't told or did a prank in months after his twins death. They were practically two puzzle pieces, and if put together, the best prank combo ever. Also, Harry was devastated when Remus and Tonks died, he tried not to show it though. He didn't want people giving him sympathetic looks and what not. Remus was the one who taught him the patronus charm and saved his life countless of times. And Tonks always shifted her form to a pig or something and made him laugh. There were also loads of other people who were grieving also and Hecate was getting worried. You see, Hecate gave four mortals the ability to use magic, but threw magic sticks instead. They soon after made a magical school to teach young witches and wizards to use magic. Centuries gone by and the story of how they got there magical powers twisted and turned until Hecate was out of the picture. Now Hogwarts and many other institutes around the world are basically Hecate's pet world. Anyways, the one person who Hecate know that has gone through the most heartbreak, trauma, and betrayal and that is still sane is... Nico Di Angelo. He will know how to sympathize for these wizards and help them cope. But will the young masters like him? Will they be scared of him? Or will they think he is one of the best teachers at Hogwarts? Read this book to find out! TRIGGER WARNING: This book has swearing in it and references to some language choice that you may not like or may not be good for younger audiences. This warning will be updated once I finish the book to make it more relatable and be in tune to the things in this book. ALL RIGHTS GO TO RICK RIRODAN AND J.K ROWLING EXCEPT THE STORY LINE AND SOME OCs!!

When Percy Jackson and the seven of the prophecy are turned in to children by an unknown foe, a spell that is irreversible even for the gods, they have to walk the streets of New York as six year olds. Yet the seven year olds have their eighteen year old minds. Oh the fates are cruel. But when they are picked off the streets and sent to the Rainbowsmiles orphanage, how will they stay together. The avengers have started a new program, adopt eight children to teach to be a new elite squad, like a backup avengers, in case anything were to happen to the team. When they see the kids on offer, none look too promising, except for eight six year olds with extraordinary fighting skill. Will the seven and Nico find purpose as a new squad taught by the avengers?

With Sally and Paul missing, Percy learns that he has a mortal uncle. Tony Stark was not expecting to find that he had a nephew; nor that said nephew was a terrorist, according to SHIELD. What side is he to choose, his work- with the Avengers(with SHIELD), or this boy- his chance at having a family? Likewise, the Avengers are also surprised. Percy is keeping secrets, and they don't know if they can trust him. Is he dangerous? Or could he become part of their ragtag family? Perhaps both? How will Percy handle all the things that are getting thrown at him? Will he manage to stay himself through it all? ~~~~~~~~~~~~~~~~ Current word count is 122,856(as of chapter 55) ~~~~~~~~~~~~~~~~ Most Impressive Ranking: #1 in percyjackson September 28th, 2019 #1 in thor June 5th, 2019 #1 in avengers June 9th, 2019 #1 in crossover August 10th, 2019 #1 in nicodiangelo August 24th, 2019 ~~~~~excerpts~~~~~ "Brother, what if the other gods learn of this?" "They will fear him. They will fear him in a way that only cowards can fear someone weaker than them." ~~~~~~~~~~~~~~~~~~~~ "Okay. So, what are you gonna do?" "You will just have to wait and see, little cousin." She says. "You are really tall for a girl, but I'm still taller." I reply. "I'm older." "You were a tree!" "Still older." "You stopped aging just before you turned 16. I'm seventeen." I argue. "And I haven't had my years messed with." "If I hadn't had my years messed with, I'd be twenty-one." She smirks. "If we go by dates, then Nico is the oldest." I comment. She stops walking for a minute. "No. No, he's little. He's little cousin." "Then so are you." I smirk. She glares at me. "Agree to disagree, Kelp head. C'mon, we've got stuff to do." ~~~~~~~~~~~~~~~~~~~~ I do not own the characters, they belong to Marvel and Rick Riordan. Cover is made by @ShipCanons However, the plot this fanfic takes is TOTALLY mine and I'm proud. Chapters average at just over 2,000 words each.

She first saw him when she was 22 years old, and injured on a mission. He was 10 years old, and visiting an aquarium. Percy Jackson looked into Natasha Romanoff's weary but determined eyes, and decided to help her. And so, he pulled a lever, spilling his class and her enemies into a tank. That was not the last she saw of him. By the time several years pass, the two green-eyed siblings by bond will be known as heroes, albeit of different worlds. Perhaps they don't know everything about each other. But they do know that they will always have each other's backs. He helps her out when her missions don't go the way they planned, which doesn't happen too often. She teaches him how to be a good spy, although that isn't the intention when they start the lessons. And they become very close, just as close as true siblings, in fact. So when Natasha finds herself in a complicated position during the Avengers' Civil War, Percy decides to interfere. And the Avengers are extremely surprised when they meet Natasha's younger brother. Plans are made and set in motion, alliances are completely misconstrued, friendships are tested and broken, and the two siblings find themselves on their own side against the world. However, there's something bigger in the works for the Avengers, and they'll need all the help they can get to face it. Including the two green-eyed siblings in everything but blood. This is largely Marvel canon compliant up until Captain America: Civil War, with Percy's interaction with Natasha being a background to the PJO books. Cover by @cajoling - she's awesome, honestly I'd check out her work as well lol

17 year old Percy returns from defeating Gaea, Annabeth died leaving a heart-broken demigod who leaves camp. He goes to his mother's place and spends two days there, when he finds a note when he returned from school...he walks to the bedroom and gasps, crying silently. His mother and Paul are dead in bed. Percy goes to the phone to report it to the police. They find out that Percy has an uncle, names Tony Stark, an annoying person who loves attention. How will Percy put up with the newfound fame and depression. While Fury is keeping an eye on Percy, Tartarus is rising for revenge (in sequel) but also a titan too. Will the Avengers need Percy's help.