Thalia, Nico, Percy and Annabeth are stunned to find out about a world of witches and wizards. They are even more stunned to find out they must go, undercover, to Hogwarts. Harry, is excited to go back to school for another year. But will having American "exchange students" ruin it, or improve it? Sorry for the bad description, this is set after BOO (Spoilers) and the Deathly Hallows. Plz read and enjoy! ~Gabby :)

Percy Jackson has always been different. Even by demigod standards. He had normal demigod problems...dyslexia, ADHD, and monsters. He had normal problems. Bad grades, getting into trouble at school, that kind of stuff. But he was also the son of Poseidon, the subject of two Great Prophecies, the Hero and Savior of Olympus, one of the only living beings...gods included, to survive Tartarus, one of the only demigods to bathe in the Styx, and one of the only beings that ever held the sky. All that makes him different. But now, he was about to delve further into abnormality, when he finds out he has another evil grandfather. This time it isn't an evil, immortal, all powerful Titan Lord that likes eating his kids...just a powerful, evil noseless creep with a freakish, yet hilarious name that somehow makes people flinch. And now, Perseus Jackson, the son of Poseidon, is about to go on his strangest adventure yet...going to Hogwarts School of Magic. Yet another tragically hilarious name. (Look, I know there are a lot of these and it's pretty classic, cliche, and slightly overused, but I promise you readers that this story does not fit into that mold. Give it a shot, and see how it goes. But if anyone steals my plot...I'll feed you to my pet Hellhound :). )

Voldemort is alive, and growing stronger. The Ministry are ignoring Dumbledore's warnings and are making him out to be an old fool to discredit him. The Order of Phoenix are trying their best, but they aren't certain themselves. Harry Potter is losing his cool....and Albus Dumbledore is contacting Percy Jackson. Dumbledore needs Percy...knows that Harry is the one destined to defeat Voldemort, but desperately needs help. So he asks Chiron, and Percy Jackson is sent to Hogwarts to protect Harry.

When Percy Jackson and his friends finally defeat Mother Earth and send the giants to literal hell, all Percy wants to do is settle down with his girlfriend Annabeth Chase. So of course, the complete opposite happens. When the Fates (whom Percy decided had something against his happiness) cast yet another evil grandfather into Percy's way, Percy is thrown into a world of witchcraft and wizardry, not to mention deceit and betrayal. Because really, what else can you expect when your grandfather is Voldemort?

After the war with Gaea and the giants, the gods think that the demigods will need more allies incase of another war. So, they send Annabeth, Percy, Thalia and Nico to Hogwarts to get the wizards as allies. Takes place after Hoo and the war with Voldemort. Dumbledore and Snape will be alive. Warning: I ship Percabeth, Thalico and Dramione. Sorry, I'm bad at summaries. Feel free to correct me if I'm wrong about any events that happened in the books, spelling or grammar. BUT, don't leave rude or hurtful comments about anyone and don't leave any mean comments about me, my plot, or my writing style. Don't like it, then don't read it. Leaving mean comments on anyone's stories, shows that you're a hater and a bully. DISCLAIMER: I don't own the Percy Jackson and the Olympians series, the Heroes of Olympus series or the Harry Potter series. Rick Riordan and J. K. Rowling do.

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'

Harry Potter is used to being the Hero of his world. He and every other wizard believes he is the destined savior of the world. Now that wizard world knows Voldemort is back Harry is going to need protection. Percy Jackson has finally defeated Gaea and saved the world yet again and thinks things will start to calm down. Unfortunately for him, he is that protection. Except he can't do it alone. He is going to need the help of six certain people. Worlds collide in Demigods at Hogwarts. (Guys I suck at summaries. I swear the book is better.)

A Percy Jackson and Harry Potter Crossover Fanfic The war with Gaea is over, and the only plans Percy have are to spend time with Annabeth. But when a crazy old man comes knocking on his door, his whole life is turned upside down. With another evil grandfather out to get him, he has to go to Hogwarts, a place where Magic is more than just a thing for children of Hecate. A Percy is the grandson of Voldemort story. Set in the Order of the Phoenix and after the Blood of Olympus

Join our favourite demigods of Camp Half Blood as they travel to Hogwarts to create an alliance with the Wizards of England. Keeping their identities a secret is hard, with Percy around, extremely difficult, a snoopy 'golden trio', almost impossible. But with a new threat rising, it may be time to once again reunite two types of magical to defeat everyone's worst nightmare.

PERCY wanted to live normally... Stupid old Fates. Turns out he has another evil grandpa. Dumbledore and Harry come to get him. But did they really need to knock him out? HARRY is furious. His worst foe is rising somehow again and this time he has a freaking grandson. They have to get him before Voldemort but should they trust him? UPDATE!!!!! I have broken my computer and it is going to get fixed soon. I will update right when it is fixed! I swear it on the River Styx!!! Until then I am going to go through and edit on my phone and tablet. Love you all, sorry for the inconvenience.