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.

Brother of my mother, with whom I stay, Cast spells and does tricks with a stick like clay. An odd bunch of friends call his home theirs, They all walk in, mostly in pairs. Accustomed with Gandalf and Spark head who join in his fun, Which is all very nice, because my previous life holds none. Alone I be, No other friends or family. To the arms of death they go, While I wish they carried me in tow. My uncle's name is Sirius Black, And mine is Perseus, son of Jack. All Characters belong to RR and J. K. Rowling

After the giant war Percy is left alone in the world. He decides to leave camp and goes to London where he meets the goddess Hecate. In London he is asked to teach at a magic school, Hogwarts. Set after the giant war (the giant war didn't end like it did in BoO so there are no spoilers) and after the war against Voldemort.

It says it in the title. It's set after the war with Gaia and the war with Voldemort. I'm keeping everything original except the fact that Percy's mum is the daughter of Voldemort. It is mentioned that Leo comes back and someone else. You have to read to find out.

Percy's angry. I mean come on, there are other demigods in the world! So why is it him who has to go to Hogwarts? And who on earth thought it would be a good idea for him to teach??? But when something goes horribly wrong who can Percy turn for for help? Friendships will be tested, sacrifices will be made and lives will be lost. Thanks so much for @ilove3101 for the amazing cover!!!!!!

(The rewritten version is up) What if Nico had a younger brother? One that wants to take over the world? Not just the world, but wants to achieve immortality? Nico wanted a quiet life-as quiet as a demigod can get. Instead, he gets kidnapped by the Order of the Phoenix and is judged by the actions of his half brother, Tom Riddle-or as he is widely known, Voldemort. When he gets to Hogwarts, it's the Triwizard Tournament, will he survive? Or will he fall to his brother and the Death Eaters? Is Albus Dumbledore who he thinks he is? Voldemort, evil villain or innocent under a evil spell? Set after The Trials of Apollo and during The Goblet of Fire. By _Jewelmist_ and ChildOfFantasy. I DO NOT OWN HARRY POTTER OR PERCY JACKSON, THEY BELONG TO J.K. ROWLING AND RICK RIORDAN

Nico di Angelo had one job - shadow travel to 15 Grimmauld Place in London and reap a soul. But things went sour when he ended up three doors down, trapped with the Black family and crazy stick-wielding "wizards". Hopefully Percy Jackson can rescue him from this madness. ⋅⊰∙∘☾∘∙⊱⋅ cover uses viria's art highest ranks - #1 in nicodiangelo, #1 in nico, #8 in pjo, #36 in percyjackson, #51 in crossover, #1 in kanechronicles, #6 in hoo, #10 in hp

What if Sally Jackson had a half-brother? What if he was a wizard? And what happens when Percy decides that he needs to help his uncle out? Percy travels across the seas, and into the shadows in a personal quest to help his uncle survive his role as double agent. And all the while, Percy must do his best to hide his true identity from the leader of the side his Uncle is spying on, Lord Voldemort.

No one expected Lord Voldemort to have a grandson, not even his grandson. It doesn't help that he's one of the most powerful wizards in existence. His name? Percy Jackson.

Percy Jackson meets Harry Potter. Harry is jealous of Percy. After Giant War and Wizard War. Voldemort is back and only Percy Jackson Hero and Saviour of Olympus, Carrier of the Curse of Tartarus can save them.