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

Portals are one of the most interesting travel agents in the universe. They can get you anywhere, anytime, and anyplace. But for Percy Jackson, falling through a fandom portal was the last thing he needed. After being plucked from camp, Percy finds himself on the run through the universe without friends or a way home. All the while a darker plot begins to unfold- one that threatens to entangled the entire cosmos. Falling through time and portals, Percy is the only one who can save it from disaster. And from the looks of it, he doesn't have a say In the matter. Will he be strong enough to fight when hope seems to be lost? Will he tip the balance of fate and save everyone? Will he ever get back to camp and see Annabeth again? Or will he lose everything? Fall in deep with Percy before it's too late. "This is the BEST crossover fanfic I've ever read." -@Lady_Slash "...you are one of the best authors on Wattpad." -@TheNerdyDemigoddess "Your story is great...the only good multifandom story I could find." -@stephaieruthrybolt "I can't even begin to Describe how well written this is, the plot is simply incredible." -@AwesomeAuthorAlyssa "One of the rare moments I am practically ravenous for the next chapter..." -@Solid-Wisp "I really thought this book was innocent in the beginning...but you have made me stay up till all hours of the night." -@Diamond_Destiny "This story is ruining my life, I LOVE IT" -@NoSuchThingAs_Normal "You are a really great writer and sometimes I forget you are not Rick Riordan." -@DemeterPond "Can I just say that this book is actually better than the original pjo(Percy Jackson Series) and also HOO(Heroes of Olympus Series)... I LOVE THIS BOOK!!!" -@qzwzezrztzyzuzizozp "Thus begins one of the best Percy Jackson fics there ever has been, is, or ever will be." -@Good_Night_Lock

Percy's life couldn't get any weirder. or so he thought. Apparently, he has ANOTHER evil grandfather named Mouldy Warts. ok, so maybe that wasn't really his name, but whatever. ~ Harry can't believe his greatest enemy has a grandson! He destroyed Harry's family, he doesn't deserve one! Harry has no doubt this kid will be just as bad as his grandfather. or will he? Enjoy Demigods! -Shark

What happens when Demigods meet regular old Mortals? You will see soon my young Demigods. I will try to update at least one time a week. DISCLAIMER: I don't own PJO or HOO

hary potter x percy jackson fandom crossover Nico poses as a student at Hogwarts School of Witchcraft and Wizardry. His mission was administered by Hades and Hectate- to befriend the Golden Trio and aid thier quest for the destruction of horcruxes/Dark Wizards. Set during the Order of the Pheonix/after Blood of Olympus. (I know most fics are set during the trio's fifth year, just bear with me) First posted on 8/25/14. Spoiler Warning: Do not read unless fully caught up with HP series, PJO and HoO series.

Hello there fellow humans. Get ready to listen to my story. If you can... Understand my humor... Then... You will love this... "Batman out" *Hits a wall* "To be or not to be" "Wait, wrong answer" Highest ranking: 2 in humor. Wait... 2 as in 2! Wow! This is my life folks. No I'm not kidding. It's all for real! Now I must get back to my Toothless plush named Batman!