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Unexpected Allies by
Neptunerover reviews
Percy Jackson & Annabeth Chase have recently finished the second gigantomachy and are just looking for a break. However a threat in England has the gods nervous, so they send the two most capable demigods in a century. Harry has just finished his second year at Hogwarts and is praying for a relatively easy and fun year at Hogwarts. Enjoy.
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: T - English - Adventure/Romance - Chapters: 5 - Words: 24,767 - Reviews: 26 - Favs: 91 - Follows: 161 - Updated: 7/22 - Published: 3/16/2018
Darkness Returns by
Silvermoon816 reviews
Voldemort has been defeated, the Wizards believe they are in the clear. But a new kind of evil is coming, a kind they have never met before. With the help of some demigods can they hope to stop the forces of evil at their doorstep, and in their own walls. Set after DH and BoO. I don't own a thing! Abandoned.
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: T - English - Fantasy/Supernatural - Chapters: 35 - Words: 53,436 - Reviews: 143 - Favs: 66 - Follows: 79 - Updated: 5/22 - Published: 1/25/2018 - Complete
Forever- Percy Jackson at Hogwarts by
Aelin-Annabeth1682 reviews
Set After heroes of Olympus, during half blood prince, Percy Jackson and some of his friends must go to Hogwarts to help Harry Potter against Voldemort in the war. Through their many hardships the two completely different groups have to work together despite their differences to win this war.
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: T - English - Fantasy - Chapters: 36 - Words: 33,318 - Reviews: 27 - Favs: 52 - Follows: 69 - Updated: 10/26/2018 - Published: 4/3/2018 - Complete
The Heroes of Olympus Protect the Golden Trio by
AliaPace-Percabeth reviews
Classic 7 Heroes plus Thalia,Nico,Will and A few others protect the Golden Trio.However, there will be a twist along the way and a third battle which will add to the Heroes' many battle scars. Rated T for violence, please Review and give your opinions and suggestions. Disclaimer: all rights belong to Rick Riordan and JK Rowling.
Crossover - Percy Jackson and the Olympians & Harry Potter - Rated: T - English - Adventure/Romance - Chapters: 13 - Words: 26,580 - Reviews: 40 - Favs: 35 - Follows: 38 - Updated: 10/19/2018 - Published: 2/26/2018
The Seven Go to Hogwarts by
RedGods reviews
The seven of the prophecy, Percy Jackson, Annabeth Chase, Jason Grace, Piper Mclean, Frank Zhang, Hazel Levesque, and Leo Valdez have been assigned a new mission from Chiron. Ship off to a British boarding school called Hogwarts. Their goal? Protect Harry Potter from Lord Voldemort. But when a new ally for Lord Voldemort emerges, how will The Seven and the Golden Trio cope?
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: T - English - Adventure/Fantasy - Chapters: 34 - Words: 150,982 - Reviews: 177 - Favs: 158 - Follows: 190 - Updated: 9/15/2018 - Published: 7/10/2017
Demigod Trials by
Hope4All reviews
I hope this is not cliche. The Seven, Nico, and Will must help protect Harry Potter and Hogwarts from an old foe. The demigods must hide their secrets and identities while embarking on the Triwizard Tournament. Trouble soon arises on both sides as an old foe arises... Disclaimer if forgotten: I OWN NOTHING! except plot. NEW CHAPTER UP! ONE AFTER THIRD TASK CLIFFHANGER!
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: T - English - Adventure/Drama - Chapters: 24 - Words: 51,502 - Reviews: 164 - Favs: 75 - Follows: 95 - Updated: 8/26/2018 - Published: 9/9/2017 - [Percy J., Annabeth C.] Harry P., Hermione G.
Hogwarts Heroes by
Queen of the Rings reviews
A series of one-shots based off HoO characters in Hogwarts. Be prepared for insanity.
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: K+ - English - Humor/Adventure - Chapters: 1 - Words: 1,530 - Reviews: 3 - Favs: 2 - Follows: 4 - Published: 3/18/2018
Dear J, with love, L by
00Verisimilitude00 reviews
When Dumbledore assigns all the seventh years pen-pals to promote interhouse unity, will Lily and James realize that they should take the written advice given to them and get together? And why is it that their written counterparts can empathize so well?
Harry Potter - Rated: T - English - Romance/Humor - Chapters: 8 - Words: 42,561 - Reviews: 136 - Favs: 68 - Follows: 126 - Updated: 9/14/2010 - Published: 6/17/2010 - James P., Lily Evans P.
The Marauders and the Rogues by
PrincessEarth reviews
The infamous Marauders weren't alone in their love for pranking. In fact, they often had their butts kicked by a bunch of girls. Now, this is it. Seventh year. Four girls, four boys. Two opposing pranking teams. One hell of a battle to be won.
Harry Potter - Rated: T - English - Humor/Romance - Chapters: 26 - Words: 179,268 - Reviews: 510 - Favs: 297 - Follows: 299 - Updated: 8/15/2010 - Published: 8/1/2007 - Lily Evans P., James P.