Title pretty much says it all it's the multiverse of RWBY.

Harry Potter is a twin soul?! Yes his twin soul's name is Jason, Jason Potter and, strangely enough they seem to be Jupiter's son(the Roman form of Zeus) and a wizard. That's not all, he has a twin sister too. Read the thrilling adventures of Harry and Jason Potter (Demiwizards for ever!!!!!) as they learn of their demigod inheritage and the truth behind the the prophecy.

Eight years ago, Percy and Harry Potter were separated. Percy was sent to live with their aunt, Sally Jackson, in New York, and Harry stayed with the Dursley's. Now they are both eighteen, and Harry has lived through a war. Percy has lived through two. Neither Percy's friends nor Harry's know about the other. What happens when the seven get sent to Hogwarts on a quest. Will the Potter twins finally reunite? Or will they miss each other completely?

When a four year old Harry Potter runs away from his abusive family he finds himself at Hogwarts. While there over the Summer holiday he makes new friends and is placed under the care of everyone's favorite potions master. A Harry Potter AU.

(A Percy Jackson and Harry Potter Crossover) Percy Jackson was hiding. This time, at least, it wasn't from mythological Greek monsters. No. He was hiding the truth from everyone. Born in England, growing in an abusing atmosphere, the older brother of "The chosen one", the first demi-wizard to ever attend Hogwarts, two times saviour of Olympus, Percy Potter had a lot on his plate. But he couldn't tell that to anyone until his coming of age, or both of his worlds would crumble, and it'd be his fault. Join Percy in this awesome story, where he will overcome the hardships of...well, being himself. TRIGGER WARNING: Mentions of Abuse, and some cursing! (Not too much, just a bit sometimes...). I own the plot and nothing more! [Won't update for a while]

Set after Blood of Olympus and during Order of the Phoenix. Percy gets betrayed, goes to Hogwarts (insists on calling it Pigfarts), Harry thinks he is a Death Eater, you know the usual. *shrugs * All characters belong to Rick Riordan and J.K. Rowling. (except for the OC's)

A multi-fandom fan fiction, this story follows Percy Jackson on his journey through the Marvel Cinematic Universe to move on from the war and the seven's deaths, and little to his knowledge, to prepare for a greater threat than Gaia, a threat that still haunts his nightmares.

What happens when Lilly Potter sleeps with two men on the same day? What happens when Voldemort doesn't know which child is the one of the prophecy? Harry is the famous Potter boy. Percy is neglected by his family and most of the wizarding world. When the boys get sorted into their houses, how will the students react to another Potter boy? What will happen to Percy since he's hiding a secret? What will happen when the two worlds have to come together?

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.

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)