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?

Percy Jackson is the grandson of Voldemort with a twist his old friends live in hogwarts and so does Annabeth's sister

The order of the Phenix discovers that the dark lord has a grandson who is none other them Percy Jackson. Percy Jackson and Harry Potter Crossover Takes place after HOO series though Percy is de-aged and during Harry's Fifth year. I do not own Harry Potter or Percy Jackson series

When Percy Jackson lost everything he has. His fiancé, Mom, Paul, the seven, Thalia and Nico. Percy is falling apart.

Almost nobody knew. Not Harry Potter, Percy Jackson, Hermione Granger, or Ron Weasley. Nobody knew, except Dumbledore, and Sally Jackson. What did almost nobody know? Well it says it right there in the title, Percy Jackson is Voldemort's grandson... **old version, currently being rewritten**

Percy wins the war but at the price of all his friends and family. Immortal and alone he discovers he has another evil grandfather. Find out what happens when Voldemort's grandson goes to Hogwarts

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.

What if Percy had wizarding ancestry? What if Jackson was Sally's mothers maiden name? What if Percy has two evil grandfathers?!