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.

Two months after the war with Gaea, a mysterious new prophecy has been issued, sending Percy Jackson, Annabeth Chase, Nico Di Angelo, and Will Solace to the Hogwarts School of Witchcraft and Wizardry. (Set after The Blood of Olympus and during The Order of the Phoenix)

Perseus Potter was three years old when their house was attacked. His mother handed him his baby brother and told him to always protect Harry. So he did. He even went so far as to jump in front of the killing curse. Dumbledore told him that Harry was to be the chosen one and to always protect him. Strange things begin to happen when the older Potter begins to attend Hogwarts. Missing students, strange creatures, secretive teachers, and hidden parentage. It is sure to be an eventful year. Disclaimer: I do not own Percy Jackson or Harry Potter.

After the war, it was straight back to the Dursley's for Harry. But not before someone else joins the "family". During the final battle, Gaia sent one of her minions to kill Percy's mortal parents. But they weren't the only ones to die. The police, not knowing what to do, sent Percy to his only known living relative. Petunia Dursley. --- Written by: ThatOnePezz #10 in dudleydursley as of November 2019 #92 in Fanfiction as of October 2017 #319 in PercyJackson as of March 2020 #647 in jackson October 2023 #980 in percabeth as of November 2019 Being Edited by: HeyThatsAiko (Shes awesome, go follow her)

After the events of the Chamber of Secrets Perseus Riddle has never been more cautious in his life. Potter is now suspicious of him because of his last name, Dumbledore is keeping a much closer eye on him more then ever and how can he forget the fact that his father was very much not pleased with the fact that the basilisk of Slytherin was slayed by the boy who lived. Now wasn't that a fun conversation. And what is he suppose to do with a distress call from Grover about two demigods he found at the beginning of December? Will the school really believe that a family emergency is what called him away earlier for Christmas break? Oh and lets not forget about that rouge Azkaban escapee Sirius Black who was rumored to be running around in Hogwarts and the dementors now freely going around the school grounds. Well, Percy thought, this is gonna be one hell of a year.

It was a month after the Second Titan War, and Percy, Nico, and Thalia are reluctantly being sent to Hogwarts School of Witchcraft and Wizardry on a quest. But, Percy would much rather spend it with his Wise Girl. Their job: protect Harry Potter. A seemingly easy quest, until Harry's name ends up in the Tri-Wizard Tournament. Now, they find themselves getting grey hairs, and losing sleep, as they try to keep us with the Wizarding World. In this crossover, they meet Ron, Harry, and Hermione as they try to navigate their fourth year and the Tri-Wizard Tournament. But what evil plans do they discover one Goddess has in mind? Read and find out.

Sally died protecting her nephew Harry Potter. Lilly and James Pottor come back home to see her dead and Harry crying. But they notice something else is wrong. Their nephew Percy is gone. All rights go to Rick Riordan and JK Rowling So in this story there is going to be a lot of people who aren't dead. There's Snape, Sirius, Lupin, Tonks, Lilly and James (of course!). Also Fred not going to be dead because separating the Weasley twins is like separating the Stolls! Blackjack and Percy are going to seem more close in this. I've only seen the movies to Harry Potter so sorry for incorrect information! Just tell me and I'll try to fix it!

*DISCLAIMER: THIS BOOK IS DISCONTINUED. I AM REWRITING IT AS LEGIONS IN LEGENDS, A BOOK YOU CAN FIND ON MY PROFILE. SEA GREEN WILL NOT BE UPDATED ANY FURTHER, BUT YOU CAN STILL READ IT IF YOU WISH* When a new prophecy is told, Chiron sends Percy and a few friends to Hogwarts to learn magic and make alliances with the wizards. There is distrust among them, but will they learn to work together in order to defeat the new threat that is rising? All characters belong to J.K. Rowling and Rick Riordan. This takes place after the Blood of Olympus and the Deathly Hallows. Everyone is in their 8th year and nothing from the Trials of Apollo has happened. RANKINGS: #2 in tratie! [17/10/19] #1 in demigods! [25/10/19] #5 in percabeth! [3/10/19] #3 romione! [18/12/19]

Percy Jackson just won his own war, and now Chiron wants to send him, Annabeth, Nico and Thalia to a wizard school in England? Not to mention it's called Hogwarts. What kind of name for a school is that? Their quest is to protect some guy named Harry Potter, and stay undercover. No one can know he's a demigod. Well, off to Hoggy-Warts. WARNING: I wrote this when I was twelve, and it has lots of hate towards Harry & Ron in the beginning, even though I love those guys. It's not very good, sensible, or developed! Read at the risk of your own disappointment and disapproval!!

Crossover between Harry Potter and Percy Jackson Harry Potter and the Half-Blood Prince: We all know the story: Harry gets a book in his potions class, allowing him to keep further ahead of the class. In that book, it says from the property of the 'Half-Blood Prince'. We all know who it is at the end, right? Or do we? The twist: Percy Jackson, Son of Poseidon, is sent to protect the 'Chosen One' after the Great Titan War against Kronos' Army. With the blessings of Hecate, he joins the Hogwarts family with his girlfriend, Annabeth Chase, admitting that both he and the Daughter of Athena are 'Half-Bloods'. Confused, Harry Potter tries to find out the history of his potions book by confronting Percy Jackson, making more friends along the way. Together, they discover secrets hidden within both the school and Professor Snape while surviving yet another year at Hogwarts Witchcraft and Wizardry.