In the worlds of Harry Potter and Percy Jackson, Harry is eating dinner in the Great Hall and Percy is being chased by monsters. How do the two worlds meet? Simple. Percy falls through the enchanted glass ceiling of the great hall unconscious. Percy doesn't know where he is, only that he's being chased by monsters. Fighting in the sky with Blackjack, there are only two monsters left. The monsters hit Blackjack and Percy with their clubs upside the head, rendering them unconscious and spiralling in different directions. As Percy plummets downwards, Riptide slips out of his hand and slices through the two remaining monsters, killing them out of pure luck. Or is it pure luck? When Percy wakes up in the Hogwarts infirmary and tries to leave, Hecate tell him to stay and protect the Boy Who Lived and his two closest friends. Except how is he supposed to protect people that don't trust him? Disclaimer: I do not own PJO, HOO, or HP.

This is a Percy Jackson/ Heroes of Olympus and Keeper of the Lost Cities crossover. All of the Seven are dead except for Percy, and Percy is super OP, because I love Powerful!Percy and slightly Dark!Percy. A year after BoO and sometime after Legacy, maybe after other books that haven't been written yet. So on with the synopsis! The war with Gaea is over, and life as a demigod is finally as peaceful as it can get. Percy is now 18, and he is living with his mother. He goes to Camp Half Blood every day to train the newer campers. On the day of a peace summit with Camp Jupiter, the camp is destroyed and Percy's parents are killed. All the demigods in America in either of the camps are dead, except for Nico, Will, a new camper named Kaylie, Reyna... and Percy. But Percy is not the same. He is darker, harsher, more angry and powerful. His fury and sorrow at almost all of his friends and families' deaths is what fuels him now. One day, as he is mourning his friends in a graveyard, he sees a clear crystal on the ground, which takes him to a strange new place... Sophie is distraught. The Neverseen took Keefe for his new ability he's manifested. They have to make a plan to get him back. When a strange boy with black hair and blue-green eyes light leaps to Havenfield, they all think he's an elf. Until they realize that he has strange powers, and he can fight with a pen. They help him realize what he is, and he helps them get Keefe back. But the final battle with the Neverseen is coming. Will this boy be a help... or a hindrance?

It is three months after Gaea's defeat and Camp Halfblood is hanging by a thread. Percy is a shadow of who he was; a war hardened warrior. He takes on quest after quest to distract him from his losses, but he is still broken, no matter how much he tries to stay strong for the Camp. During a sudden visit to his mom's house, he gets a glimpse of her past while being pulled into another war. His PTSD is at an all time high and he was finally starting to accept their deaths when he discovers the woman he calls mom has her own skeletons hiding in the closet. And they are only now beginning to crawl out from the cracks. Albus Dumbledore and the Order of the Phoenix are running out of options. Voldemort is getting stronger while their numbers are dwindling. In a desperate attempt to gain allies, he tracks down an old student of his. Sally Jackson, or, as she was known, Sally Potter. Joined by some of her old classmates and friends, he tries to persuade her to join their war effort. To their surprise and disappointment, she adamantly declines only for the reunion to be interrupted by her teenage son. One who possess magic, the one they never knew existed. The Halfblood Wizard: Perseus Jackson. ~~~ Previously Titled Halfblood at Hogwarts New Title by HorcruxDemigods7 Cover by Inheritance21 ~~~ "You know when you find a bunch of 'okay' books on Wattpad but every once in a while you find one that you just have to stay up 'til the sunrise to finish? This was the book to make me stay. Percy's persona is wonderfully written, the grammar is perfect, and it is completely original. Well done and I can't wait to read the rest." ~Unrealqueen "DAM YOU ARE THE GODDESS OF WRITING" ~Labinzel "This is one of the best stories on Wattpad period. Not just in fanfiction or crossovers but out of all the books on Wattpad. This is THE BEST and my FAVORITE. You are such a good writer!!" ~fanficreader14 ~~~

Percy Jackson's finally at peace. The gods have made him, the seven, and some of his other friends gods. He thinks nothing can go wrong - right. As if that ever happens. When a strange man appears on Percy's doorstep, Percy and his friends are thrown into the strange world of wizards. At Hogwarts, they find friends, family, but, unfortunately, enemies. When will life ever be simple for Percy. Or, for that matter, Harry? Disclaimer: I do not own Percy Jackson, Heroes of Olympus, or Harry Potter. All rights go to Rick Riordan and J. K. Rowling. Only the OCs and plot are mine.

After all the Seven had been through, don't you think they'd get a break? NOPE! Once again the fates have meddled in their lives, and it didn't turn out very well. Now they had to go to a school called Hogwarts and study their so they could be watched. More specifically, so Percy could be watched. Will they're identities be exposed? Will there be a war? Harry Potter was better then everybody else. He was the bloody Boy Who Lived. And what happens when he finds out that Voldemort had a grandson. And that said grandson was coming to Hogwarts. There was only one explanation. Voldemort was trying to infiltrate Hogwarts. Harry was going to save this school and get a super hot girl in the process. Even if it was the last thing he did. He'd have to take down this person, and some of his friends, this would surely mean war. THIS IS THE ONLY TIME I'LL SAY IT!!! All rights belong to J.K. Rowling and Rick Riordan. A few characters who were dead are alive. Some characters that I bring back to life will die. All this takes place during the Golden Trios Seventh Year, they don't hunt for Horcruxes and Harry, Ron, and Ginny are @ssh0les. !!!Spoilers from the ToA!!!

A normal day at camp half blood. Well, if you call your future selves falling from the sky normal then ok! I don't want this to be one of the huge 3 or 4 hour story. So the chapters are not that big. I DO NOT OWN ANY OF THESE CHARECTERS! They belong to Rick Riordan