Circe has broken the Ancient Law. To spite her mother, she went back in time to help the Dark Lord caused more chaos to her precious Wizarding World. Who else would the Olympians asked for help by none other than Percy Jackson and sent to the past in the Marauders Era. I don't own any of the characters except OCs. Beta by ThePlotbunnyBreeder & LeNoRi

Sally Jackson had forgotten all about her cousins ... until Petunia Dursley makes an appearance on TV. Sally decides to go to England with Percy to visit her long forgotten cousin. When they meet, Percy never tells Harry about Greek Gods and Harry never tells Percy about Wizards. It had supposed to be a fun trip. But when dementors make an appearance, secrets have to be revealed...

A fourth school has been invited to join the tournament. Little do they know, it isn't a school at all. It's five demigods sent on a quest to protect Harry Potter and Neville Longbottom. Set at The Goblet of Fire. Pre Trials of Apollo, Post Blood of Olympus. This isn't your typical story.

Percy and Annabeth thought that life was finally going as planned. A year after the war with Gaea, they are preparing to head to New Rome to start college. But things don't ever go as planned. SHIELD has become a little too interested in Percy, and when an unlucky video reaches Nick Fury, partially revealing Percy's control of the ocean, how will he, and later the Avengers, react?

All Nico wanted to do in London was reap a stray soul, but no. That wasn't what happened. Before Nico knows it, he's at Hogwarts for the year. But there are things happening at Hogwarts other than school. Soon after coming to the Wizarding World, Nico is swept up in a plot that may very well prove to be the end for one of the sides of the war.

Nico di Angelo was just hanging out in a graveyard when all of a sudden he finds himself saving the lives of two wizards and a witness to the return of Britain's most feared dark wizard. What in Hades is he going to do about that?

Nico di Angelo leads a quest to find Tom Riddle, who has defied Hades and cheated death twice. With Percy and Annabeth, he'll find and destroy seven horcruxes and navigate through Hogwarts. Between a budding romance with Will Solace and a burning desire to make his father proud, he is going to do whatever it takes to outwit the Fates and succeed... or die trying. COMPLETED

The Dark Lord's victory speech is cut off by the arrival of a certain someone with kickass death powers and a better title.

Dumbledore is left optionless. Voldemort has a new advantage in the wizarding world. Calling on a favor from his old friend Chiron, he is sent back up in the form of the strongest demigod to have ever walked the Earth. With new players in the game, who will win? Cross-posted on archiveofourown under dancingbyheart.

The demigods and shadowhunters are forced to go to high school, and both groups end up enrolled at Goode. When the groups end up meeting, will they become friends, or will their differences (and Jace) cause them to become enemies? Includes evil-eyed ducks, revenge seeking spiders, a donut obsessed pegasus and a very sparkly warlock. Oh, and some very angry eternal maidens. Enjoy!

After the war, Percy Jackson is prepared for a normal, peaceful life. However, he is thrown into the middle of a war between wizards and finds out more about his family. Percy Jackson is Voldemort's grandson.

Harry, Ron and Hermione are invited back to redo their seventh year. At the same time, the Seven, plus Nico and Thalia are sent to Hogwarts on a quest. They soon find out that there is no time to enjoy themselves, though, because something is rising, and it is rising fast... [After Blood of Olympus and the Deathly Hallows. All rights go to J.K. Rowling and Rick Riordan.]

Percy hadn't expected to have family outside of his freaky godly relatives. Harry hadn't expected to have family that accepted him for who and what he was. They were both wrong. Also, there is a murderer on the run.

Percy Jackson saved the world. But the price was much steeper than he was willing to pay. To separate his life from the bitter memories of his past, Percy is sent to London to live with a distant cousin in hopes of a nice easy mortal life. He should have known the Fates weren't done with him yet. Rated M for a reason. Possible mature content... TBD

While struggling against the prophecy of his Father's side, Percy discovers a long hidden secret of his Mother's and nothing will be the same. Now staring into the eye of another war while preparing for the first, he must make a stand. First impressions mean everything. Especially when in war there is no black and white. There is simply two sides in varying shades of gray.

Harry Potter wakes at Camp Half-Blood. Percy Jackson wakes at Hogwarts. Neither know who they are, where they are, or where they come from, but when dreams are invaded, prophecies are conjured and revelations arise, they discover the line between demigod and wizard is blurring. Something dark is coming, and Percy and Harry must unite with their new peers before it's too late.

ONE SHOT. Percy finds himself in the strangest of places.

When Harry, Ron and Hermione are fleeing the Ministry of Magic, Harry loses his way while apparating, and ends up splinching by a certain pine tree. Little does he know that wizards and demigods are very closely connected - maybe it was fate which led Harry to end up at Camp Half-Blood, where he may discover much... WARNING: CHARACTER DEATH

Percy, still recovering from Tartarus, is thrust yet again into a new world as two strange people arrive on his doorstep along with a large, black dog. As he discovers the true dangers that his new friends and family face, will he step up as he has done before, or is Percy Jackson done being a hero?

Percy Jackson finds him self running through the woods being chased by some snatchers who think that he his Harry Potter. He is shoved into the Wizarding world, and quickly learns that this war is more personal than he would prefer it to be. Set after the Giant War and during The Deathly Hallows.

When Percy Jackson is mistaken for Harry Potter by a group of Death Eaters while on vacation with Annabeth in Europe, chaos will ensue as the Order tries to set the couple free and Camp Half-Blood tries to find their missing leaders. The plot starts after the intro chapters. It's set just after the Giant War and in between the Order of the Phoenix and the Half-Blood Prince.

Being a wizard wasn't easy. Being 'Harry Potter' didn't make it any easier. But things were really starting to push it when, on a harmless vacation to the cabins at Montauk, Harry accidentally falls into a strange camp with boundaries only he can cross, facing some haunted yet strangely familiar teenage faces. (CROSSOVER. HP'S POV.)

When the golden trio use a spell to summon heroes from the furure to help with the War Percy and his friends are pulled into a fight against the Dark Lord. (hiatus)

When Sirius Black escapes Azkaban; Dumbledore has his old centaur friend Chiron send his best demigods to protect Harry Potter. But as these worlds collide, Percy, Harry, and the rest of the group discover a Dangerous Alliance that may destroy not only the mortal world, but the Mythological and Wizarding ones as well.

Nico is sent to kill someone who has been cheating Thanatos for far too long. Nico thinks it going to be a pretty easy quest. Wizards, ha! But with a nosy golden trio, an over protective friend, and clingy girls. This could be harder then he first thought. Not to mention everyone thinks hes the son of Voldemort! FIRST IN THE SERIES

Sequel to Dying Embers! Read that first! Nico is staying at the The Weasley's for a summer before he begins his second year of wizarding school. Nico has to finish a quest, learn high level wizarding spells, protect Harry Potter, keep in touch with his boyfriend, and sort out mayhem in the demi-god world. And he can smell war coming from both sides. SECOND IN THE SERIES!

After Percy Jackson defeated the Titan, Kronos, he expected to have a normal school year...well as normal as a demigod's school year can get. When Percy and his awesome girlfriend, Annabeth, run into a Shadowhunter named Isabel and a vampire named Simon the plans for everything to be normal fly out the window. Set after the Last Olympian and City of Glass. Incomplete.

Solangelo goes to Hogwarts to help protect the boy who lived. Pretty much like most other stories, a bit slow to get into but I promise it will get better. :)

Thanks to the fact that Zeus owes him, Percy is able to travel over to England with his Mom and Paul to meet relatives that Sally had recently managed to get back in touch with. Petunia, Vernon and Dudley and all pretty much the normal kind of mortal. But Percy's new cousin, Harry? Well, he's different. And Percy knows different.

After the war with Valentine, Clary, Jace, Isabelle, and Simon get sent into the mundane world of high school. The four are forced to enroll in Clary and Simon's old school ,Goode High, where they meet a certain green eye boy. Although he seems friendly enough, Jace can't shake the feeling he gets around him. Who is this boy? and why does he seem so powerful?

With Voldemort on the loose Hecate realizes her wizarding community is in danger. What will happen when Percy, Thalia, and Nico go to Hogwarts to help Harry Potter, the Boy Who Lived. NOT BOO COMPLIANT.

The Ministry only updates official family records every twenty years. In the year 1995 said update happens for the Potter family parchment scrolls (the last time being 1975, 4 years before the death of James and Lily). A lot can happen in 20 years. More than the department of family records even thought possible. Rating due to paranoia. Anything familiar's not mine (Photo too)

When a certain Son of the Sea god finds himself lost at night in the unfamiliar streets of London with his girlfriend, they decide to make an unexpected pit-stop. Who knew one night could stir up so much trouble?

[[ABANDONED]] What if Nico was blasted off the Argo II by Khione along with Leo, except in different directions? When Nico ends up in the magical world of Harry Potter, he is sent on a mission. After finding comfort and solace at Hogwarts, will he want to return and aid in the quest to stop the Second Giant war? Rated T just because.

The Mist cannot hide everything, the gods cannot hide everything, not forever, for some things are bound to leak out. And when that happens, they catches the unwanted attention of mortals, the ones that believe they can control everything, the guardians of Earth, as they called themselves. But, some things are not to be meddled with, lines and mysteries not to be crossed.

Nico and Percy and sent to Hogwarts on a quest barely two weeks after saving the world from Gaea. Befriending and helping Harry Potter is their their first task. But the second one...much, much harder.

Sam and Dean have gotten reports of a Hell hound running loose, turns out they aren't the only ones looking for it.

The seven, Thalia and Nico are going to Hogwarts as twelve year olds! Gets better as it goes on, so bear with the first few chapters please? COMPLETED: SEQUEL COMING SOON

A Weasley twin vanishes from Grimmauld Place. A Stoll disappears from Camp. They are each left with another twin from another world. Summary sucks, sorry.

Percy Jackson was pretty sure he knew about everything that was out there. He knew that he was a demigod. He knew he was a pretty dam good one, too. He knew his girlfriend obsessed over Harry Potter too much. But when he wakes in the wizard world, with nothing but Riptide to guide him, will he wish that he'd paid more attention to Annabeth? Will our hero survive at Hogwarts?

AU in which Percy was sent to Hogwarts instead of Calypso's island, but unlike Calypso's Island Percy doesn't get a choice he has to stay. Will Percy be able to keep his world a secret? Can he keep from getting expelled? What will happen when two heroes meet? Will they be friends, or will they never learn to trust each other? Set during GoF

The giants war has all but ended and Percy has survived, barely, so there's nothing left for the demigod but to return home to his worried mother- just for the holidays. During his stay, he bravely saves a cat called Chairman Meow but unfortunately is tracked down and kidnapped by the cat's disgruntled owner Magnus Bane and his friends.

Percy Jackson goes to teach at Hogwarts (while Annabeth has an internship in England) to help blessed mortals and the descendants of Hecate get back up on their feet after their Wizarding War with the deadly Voldemort. Harry, Ron, Hermione, and all their friends also return to Hogwarts to find out about another threat that might destroy both of their worlds...

After doing some snooping on a New York website, Sam's attention is caught by someone named Perseus Jackson. Dean dubs him 'human crazy' but Sam can't quite accept that. After a few girls go missing and a hellhound is sighted, Sam and Dean are lead straight to Perseus' front door... first impressions can be confusing.

Percy and Annabeth are excited to finally relax after the war. But when they are taken and held captive, they find themselves in a new world they would have never believed possible.

Percy, Annabeth, and Grover must travel to Hogwarts to protect Harry, Ron, and Hermione as Voldemort grows stronger. But, when Harry and co grow suspicious of the so called "exchange students", will Percy, Annabeth, and Grover be able to keep their true identities a secret?

A son of Hecate, Dumbledore, asks Chiron for his best demigod to help out Harry Potter defeat Voldemort. Percy is chosen by Chiron. Percy must not reveal his identity. What will happen when he meets the Golden Trio? What'll happen when he gets sorted? Will anyone ever figure out his true identity? Find out in this story! Disclaimer: I don't own PJO, or HP.

Percy, Annabeth, Thalia and Grover are called upon by a friend of Chiron's to help keep a trio of very important wizards safe from You-Know-Who; the dark lord who is much more than the wizarding world would ever realize. Harry and Ron don't entirely trust the newcomers at Hogwarts, and try to convince Hermione that they aren't as friendly as they seem.

"The first thing Harry thought was, Wow that is one big dog" "The second, and no laughing!, was I am going to die" An unexpected encounter forces Percy and Harry to work together, what will happen? "What are you doing with a stick?"asked Percy "What you doing with a pen?"retorted Harry. Percy nodded "Good point" Of course, Hermione had to meet this stranger too, check chapter 3!

So what happens when Percy Jackson's bloodline is a little bit more magical than anyone had really thought. Percy is the unknown dcendent of Lord Voldemort and now Dumbledore is having him fetched to Hogwarts. He's not allowed to go with a supervisor to keep him from blowing up the school. What do the HP characters make of Percy and his cousin Nico and their cryptic references?

When in London on vacation, Percy is mistaken for Harry and dragged away by Death Eaters. At the same time, the Order "rescues" Annabeth and hides her at Hogwarts to protect her. After SoN and during 6th year. 1st Fanfic, so no flames please

Percy awakens on a beach, only to discover that he is in England. The Death Eaters find him, and well... Set after TLO and during DH. ** On a hiatus **

The Titan War had ended and the demigod's lives became quiet. A little too quiet. That is, until one day, Chiron announces that they would be participating in a special wizard tournament, the Triwizard tournament. What will happen when wizards and demigods compete against each other? Read to find out. Rated T coz I'm paranoid and there is going to be some very light cussing.

When Leo Valdez wakes up in the year 1898, confused, tired, and mistaken as a man named Albus Dumbledore, he knows he isn't in the right world. But when he tries to find a way to go back to his time whilst taking the identity of the missing Dumbledore, the world's troubles find him one after other; and he is forced to keep balance between the Magic and the Mist.

After a shadow traveling incident Nico is sent to Britain. With his luck he manages to get himself stuck in Grimmauld place. Will he get rescued or be stuck with a bunch of crazy stick people who call themselves wizards?

Voldemort has been offered immortality by Kronos in exchange of help to destroy Mt. Olympus. Harry and the Order now have to help the Demigods if they want to have a chance to survive against Voldemort and his army.

Percy Jackson and Harry Potter are kiddnapped by an unknown force. What happens when they're fate has changed? No Harry/Percy pairings or that they're brothers. Maybe some Percabeth and Harry/Ginny later.

When Lily Potter translates a spell that can bring someone with the power to defeat Voldemort into their world, the last thing she and the order expected was a skinny seventeen year old Harry Potter. Story is back and will be finished.

Nico shadow travels to London and breaks into Number 11, Grimmauld Place to stay the night. He sets off an alarm system Moody set up to know if anyone was trying to find Number 12. Naturally, the wizards have to bring him in.

Yay! First Crossover. Nico finds himself at Hogwarts castle while trying to visit camp. Is this just a shadow-travel mix-up, or the work of the fates? NOT A SLASH!

He returns keep his promise to deliver his letter to them and what they find waiting for them. this maybe a prequel to a story havent decided

Ginny Weasley's life was going great. She had a loving boyfriend, she'd just helped to win the quidditch cup and even her OWLS coming up couldn't ruin her mood. Until a potion explodes behind her in class one day, and she wakes up in the arms some guy.

Harry Potter never had much luck, being sent to his parents’ past should have been expected. 'Complete' Time travel fic.

2002: At Harry and Ginny's wedding, Dudley discovers that every girl in the Wizarding world wants to meet famous Harry Potter's cousin. But there is only one woman Dudley is interested in getting to know. Written 2009, edited 2017. Podfic available at AO3.

A complete time travel story. Memory loss and the Maruaders. Sirius, Severus, and secrets. Harry meets the Maruaders sending him on a journey so he can finally find peace once and for all.

ON HOLD!Harry travels back in time and joins his parents in their sixth year at Hogwarts.Some romance later on. Read and enjoy: ... and maybe review...Ootp spoilers.

Before the boy who lived, there was another story. One of a monster inside of a man. One of a hero inside of a child. One of a traitor inside of a friend. And one of an angel inside of a demon. COMPLETED.

Chapter eighteen up! After the defeat of Voldemort, Harry is tired. He is offered the chance to rest, relax, and have fun…by going back in time to 1977 and becoming his parents' DADA teacher. But things don't stay relaxing for very long...