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The Big Three (A Percy Jackson and 39 Clues Crossover)

Reads 6,180
Votes 256
Parts 10
Time 1h 2m

Reads 6,180
Votes 256
Parts 10
Time 1h 2m

amycahill cahill dancahill percyjackson the39clues

Percy Jackson has been assigned a task to get two people who were handpicked by the three major gods, Zeus, Poseidon and Hades, to hold the key to their powers. 
Unfortunately, those two people have turned out to be Dan and Amy Cahill. Percy is meant to bring these two to Camp Half Blood so they can be safe. But will they be safe?
Read on to find out!All Rights Reserved

amycahill cahill dancahill percyjackson the39clues

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10 parts

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Stronger Than You Think by khadijiah1

This is the sequel to Too Strong (a Percy Jackson Fan Fic). If you haven't read that, I suggest that you do. Instead of going against the gods this time, they will be going against each other. Camp Half Blood and Camp Jupiter have joined forces and plan on attacking and taking down Percy's camp. In other news, guess who's in charge of the teams? You guessed it. Annabeth Chase and Percy Jackson. WRITTEN BEFORE BLOOD OF OLYMPUS!!!

Thank Goddess For My Twin (Book one of The Prophecy(Completed)) by aesthetically0urs

Hunter and Dean Storm. A pair of twins. Semi average, except that they are always on the run from cops and orphanages. One day, they soon go to an unusual high school, where they meet three very different people. Join Hunter and Dean on their adventure that contains heartbreak, love, humor, and all that great stuff. Percy jackson belongs to our dearest Uncle Rick who might kill them off... If it was up to me I wouldn't hurt a hair ion their precious heads... (especially Nico... Bless that beautiful boy!! <3) I only own the people who Rick obviously doesn't...

Matt Jackson: The Demigod Trials - The Sacrificial Spire (Percy Jackson World) by DemigodApprentice

Matt Jackson's life gets turned upside down when he learns that the Greek are not only real, but one of them is his dad! Matt learns that he is related to one of the most powerful demigods to ever live. Percy Jackson was always his cousin on his mom's side, but now they are brothers thanks to the Greek god Poseidon. Matt arrives at Camp Half-Blood and meets lots of experienced demigods as well as some new ones. He soon receives a quest that will send shockwaves through the relatively peaceful camp.

The Life of Angel || Luke Castellan by angelicarodz

The daughter of Poseidon and Athena wants to go to Camp Half-Blood. (Warning: I was like 12 when I wrote this so it's VERY all over the place and there's really no fixing it so....🤷‍♀️🤷‍♀️ Enjoy!)

Percy Jackson, the Son of Olympus: The Sea of Monsters by CSP2708

Percy Jackson is back, and after spending two months back on Olympus, everything goes wrong down at Camp. His new friend goes missing, Annabeth is upset, campers are disappearing, and the protective barrier around the camp is dying. Will Percy be able to right the wrongs of Camp Half-Blood? Will he be able to find his friend before it's too late? Must have read "Percy Jackson, Son of Olympus, the Lightning Thief" and "Percy Jackson and the Olympians, the Sea of Monsters" to understand this story. CSP2708 Carolin S. Petersen

Observing Worlds on Olympus by Xifos_Gladius

The annual visit that Camp Halfblood can make to Mount Olympus during the Winter Solstice does not go as usual, usually the demigods attend in the hope of speaking with their divine parents, but due to beings superior to the Olympian gods. , the Greco-Romans will realize how much they ignore and underestimate about the world, that there are beings who could confront and defeat them, that there are exceptional mortals and more. Disclaimer:Percy Jackson belongs to Rick Riordan, as well as any other element of any other work, creation that appears, credits to whom it corresponds. I'm just a fanfic writer, and creator of some gifs and images

To Save Olympus by Lilmia13

Three demigods just want to have a normal life in Camp Half Blood, but Olympus is falling again, and our great heroes, the seven, have been dead for years.(naturally, not by killing) It looks like someone else is going to have to save Olympus. Meet Mira, daughter of Poseidon, Jospeh, son of Hephaestus, and Clara, daughter of Athena, my three new demigods added into Rick Riordan's world. [written by a thirteen year old me]

Together: We Will Fight 'Till the End by crazedfandoms

Two new demigods come to Camp Half-Blood, there names are Korra (daughter of Ares) and Harper (daughter of Poseidon). The news that Harper is a child of 'The Big Three' spreads faster then lightning. The two new demigods are sent on a dangerous quest with two of Rick Riordan's most loved characters: Leo Valdez and Nico Di Angleo. All of the characters belong to Rick Riordan (except Harper and Korra). This fanfic was started before House of Hades came out. Any details that were discovered/happened in HoH will not be included in this story.

Percy Jackson's Quest at Hogwarts by lillianreads21

Percy gets taken from Camp Half-Blood to Hogwarts with one order from Zeus: find an ancient magical object that was taken from the gods. Harry, Ron, and Hermione help him as much as they can, but clearly there is something more going on.

Decisions (Percy Jackson x Reader) by JBIRD4567

The king of the gods, Zeus, sees an image of his throne being taken by an unknown half-blood. He decides the only way to make sure this image doesn't happen, is to send one of his own children to find this half-blood and defeat them before anything can happen. He figured the only possible way for one of his kids to find this demigod and stop them is to send his child to Camp Half-Blood. But, this "child" of his, isn't his real child. He decided to make Hera have a half-blood child in order to send it to the camp. But what happens when the child meets the supposed demigod from Zeus's image and they get along a little too well?

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Slide 1 of 10

Stronger Than You Think cover

Thank Goddess For My Twin (Book one of The Prophecy(Completed)) cover

Matt Jackson: The Demigod Trials - The Sacrificial Spire (Percy Jackson World) cover

The Life of Angel || Luke Castellan cover

Percy Jackson, the Son of Olympus: The Sea of Monsters cover

Observing Worlds on Olympus cover

To Save Olympus cover

Together: We Will Fight 'Till the End cover

Percy Jackson's Quest at Hogwarts cover

Decisions (Percy Jackson x Reader) cover

Stronger Than You Think

This is the sequel to Too Strong (a Percy Jackson Fan Fic). If you haven't read that, I suggest that you do. Instead of going against the gods this time, they will be going against each other. Camp Half Blood and Camp Jupiter have joined forces and plan on attacking and taking down Percy's camp. In other news, guess who's in charge of the teams? You guessed it. Annabeth Chase and Percy Jackson. WRITTEN BEFORE BLOOD OF OLYMPUS!!!