Percy Jackson finds out his mom's side of the family has a evil hidden relative. He goes to Hogwarts to uncover his heritage. A/N: I'm really bad at summaries, so just go with the title.

Percy, Annabeth, Thalia, and Nico go to Hogwarts. (After BoO) The Golden Trio are in their 7th year. This is just a story of them at Hogwarts. Harry will be jealous. I actually do love Harry and Ron but in this story they are mean. There will be Percabeth and Solangelo There will be some demigods at Hogwarts. This story is continued by Dolphin417 on this account

The Order finds out that Voldemort has a grandson. Now there is a race to find him and get him on their side. They have no idea what they are in for. Set after the HoO series and during Order of the Phoenix

The Golden Trio (plus Ginny) meet the Seven :) What could go wrong?

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.

Set After heroes of Olympus, during half blood prince, Percy Jackson and some of his friends must go to Hogwarts to help Harry Potter against Voldemort in the war. Through their many hardships the two completely different groups have to work together despite their differences to win this war. Will they fight, or unite? Disclaimer; I do own characters they are the work of JK Rowling and Rick Riordan There will be spelling and grammer mistakes but I can't be bothered to fix it.

Hey guys, this is a Harry Potter/PercyJackson crossover! Here's the prologue( this won't be in the book): Sally Jackson, a young orphaned girl, was took in to the home of two magical beings, where she found out she was a witch. She was adopted by a witch named Laura Jackson and a wizard named Jim Jackson. They took care of her until figuring out her real father Voldemort. Sally went to Hogwarts and was placed in Gryffindor. She quickly befriended Lily, and they became best friends. Sally joined the order, and one evening told everyone about her father. No one believed that such a nice and brave witch could have such a horrible father. Lily and James never took that in consideration and when she was away to an order meeting, Harry was orphaned. No one trusted her, so she ran away to America. This is the story of her son, Perseus Jackson A/N: This is after Order of the Phoenix and Heroes of Olympus Sirius didn't die, instead Peter Pettigrew did! A/N: This used to be called 'Perseus Jackson, Voldemort's Grandson'

What would happen if the dark lord had a grandson. What if that grandson was also the two time saver of Olympus and son of the sea god. How would the wizards react. What would the dark lord do when he found out. (I am also trying to not be cliche) Disclaimer: I do not own Percy Jackson or Harry Potter

After the Giant War, the Gods declared Percy too powerful to exist. Sentencing him to (supposed) death, the last thing the Gods expected was for Percy to survive- and become even more powerful than he already was. When he finds out that he has another wacky power-crazed grandfather on his mother's side, the world had better be prepared for the storm of destruction that is about to come in its wake. Armageddon is going to rain down on the universe- when you mix a demigod (with a crazily powerful evil wizard for a grandfather) and a wizard (even though Percy doesn't know what he can do with a piece of stick- wave it around?), of course, that recipe for trouble could only be one known as Percy Jackson. copyright Astoria_Greengrass set in AU warning: dark percy, dark themes. read at your own risk. "I'll stand here existing and feeling wretched existence, consuming life force till I grow distant... don't bother searching for somebody like me- a fading no one." - Unravel, Tokyo Ghoul Highest ranking: #7 in Annabeth