Eight years after Berk's heir vanished, the Viking town is slowly crumbling. Dragon attacks are more devastating than ever. To save her village, Astrid must piece together exactly what happened before the dragons wipe them all out for good. Meanwhile, half a world away and eight years wiser, Hiccup decides it might just be time to go home.

Let's say Sally Jackson wasn't always Sally Jackson. What if she used to be Lilly Potter? And what if Percy and Harry just happened to be twin brothers? Rated t cause i'm paranoid. Disclaimer: I do not own Percy Jackson or Harry Potter. All rights belong to the original authors, unfortunetly for me.

Dumbledore fears the upcoming battles against Voldemort. So, he asks his old friend, Chiron, to send reinforcements. Chiron sends Percy, Annabeth, Thalia, and Nico to pose as wizards and help win the war. As they attend Hogwarts, the Golden Trio becomes suspicious on their identities. Will they blow the demigods' covers before the war is over? T for violence.

Hiccup and the gang have been asked by Dumbledore to help out with the first task. Its not what they want to do, but Hiccup knows the alternative is worse. Hiccup meets the young champions, and is forced to specifically train one dragon... Can he do it though?

Anybody related to Voldemort must be inherently evil... right? Harry Potter thinks so. Nobody good could come from Voldemort. When Dumbledore announces that Voldemort has a grandson named Percy Jackson, Harry's already labeled Percy as EVIL and put him on his enemy list. But Percy Jackson is not whats expected by a long shot and he's not going to take any prejudices lying down...

Charged with a crime he didn't technically commit, Perseus Jackson is put in jail. But when trouble arises within S.H.I.E.L.D maybe involving a piece of evidence collected from the scene of Percy's crime, the organization may have to recruit a criminal.

Dumbledore suspects Voldemort will make use of the Triwizard Tournament to get his hands on Harry Potter. So he seeks help from the Big Three demigods to protect Harry. Percy, Thalia, and Nico have to go to Hogwarts to protect Harry, undercover of a fourth participating school. But as suspicions rise, and Voldemort finds out about the demigods, will they get out of this alive?

A series of one-shots in which Iris finds out that Barry is the Flash. I own nothing. (Now accepting prompts about anyone finding out.)

When the Seven Heroes of Olympus received a quest, it was not their usual quest. They had to help destroy Voldemort, the villain of the wizarding world. How will the famous Harry Potter react upon meeting the 'American Exchange Students' in his fifth year at Hogwarts? Will the Golden Trio find out their hidden secrets? Will the gods favour them this time? Let's find it all out now.

Percy Jackson and Carter Kane; Two heroes with a family of their own to protect. Both are very wrong in thinking life is finally safe. But darker creatures are stirring. Something is about to horribly change their lives forever. PJO meets the Kane Chronicles in an explosive trilogy that will change mythology as we know it forever.

The Giants have risen once again, and now Gaea needs the blood of Olympus in order to reawaken from Tartarus. Percy must protect his friend at any cost. Reyna needs to bring peace between the Greeks and Romans. Leo has been having dreams of a strange goddess veiled in shadows, who warns of the betrayal of his friends. Everyone has something to lose. . . Who will survive in the end?

Set during OoTP. Dumbledore is worried about the war against Voldemort, and as the goddess of magic, Hecate approaches him with an offer of aid. Dumbledore accepts. This leads to the Wizarding World learning about the gods, and our favorite demigods going to Pimplypigs! Sorry, Hogwarts! (On Hiatus, Reasons On Profile)

When Percy is forced to live on Atlantis after the giant war to learn to use and gain control over some new powers, Poseidon appoints Triton as his teacher. But when Triton begins bullying Percy, a fight ensues, during which a precious item of Poseidon's is broken. Now both brothers are forced to work together to get it secretly fixed, without Poseidon and Amphitrite finding out.

Percy Jackson never really thought about Harry Potter that much; he was just a nice boy that Percy saw every other Christmas. But he learns there is much more then meets the eye when Annabeth, Nico, and him are sent to Hogworts for a year to kill the evil wizard named Lord Voldemort.

What happens when Percy's mom, Sally Jackson, confesses that she used to be Lily Potter? Is Percy a wizard? Read and find out! Contains minor slash only kissing, hugging, holding hands. No graphic details. Now being rewritten as Magic, Demigods and Challenges

"Mr. Moony wishes to remind Mr. Padfoot and Mr. Prongs what happened last time they were passing notes in class." Four Marauders, four pieces of bewitched parchment, and a whole schedule of boring classes to fill with something more interesting! 6th and 7th year James, Sirius, Remus, and Peter's version of paying attention doesn't involve much actual attention.

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?

Percy and Annabeth are transported through time to 1999, the year after the Final Battle at Hogwarts...

Seven steps to writing yet another cliched Harry Potter fanfiction.