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Dark Phoenix by
Lightningscar reviews
"This camp isn't for me. I don't belong." A few years after Nico said this, some Campers apparently agreed. Will Nico find a new home at Hogwarts or will he meet rejection there as well? Will he even want to return to Camp Half-Blood when they need him? No slash. Ignores 'Heroes of Olympus' series, though characters from it might appear.
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: T - English - Suspense/Adventure - Chapters: 19 - Words: 272,863 - Reviews: 1129 - Favs: 1,018 - Follows: 1,136 - Updated: 3/25/2018 - Published: 12/21/2011 - Harry P., Nico A., Percy J., Jason G.
Hounds and Jackals by
WEast reviews
New York is finally back on its feet, and Fury has decided it's time to learn more about Coulson's mysterious young friend. She doesn't approve. As she and her true identity try to evade SHIELD's eye, other things start to surface. Things SHIELD regrets getting involved in. And of course, the Avengers just can't mind their own business. *Sequel to Who is This Girl?*
Crossover - Percy Jackson and the Olympians & Avengers - Rated: K+ - English - Adventure/Fantasy - Chapters: 17 - Words: 23,739 - Reviews: 106 - Favs: 144 - Follows: 203 - Updated: 1/1/2018 - Published: 7/13/2015
Kairos by
ChibiKarasu54 reviews
The Giant War did not go as planned. Everyone has fallen and only one demigod is left standing. Nico di Angelo has been entrusted with the fate of the mortal and immortal worlds by the gods themselves. Can Nico complete this monumental quest, or will he be overwhelmed with the task of facing his past in the most literal sense? Time Travel AU.
Percy Jackson and the Olympians - Rated: T - English - Adventure/Romance - Chapters: 3 - Words: 12,478 - Reviews: 24 - Favs: 85 - Follows: 100 - Updated: 5/1/2016 - Published: 3/5/2016 - Nico A., Percy J., Jason G.
Impossible Possibilities by
Nuitaie reviews
Time Travel. AU. Nico generally tries to stay in the shadows; he had always worked best in the background. So when he is kidnapped by some primordial gods that rebelled against Ouranos, Gaea and the ongoing primordials vs. gods war for a semi-permanent quest, he wonders which one of the Fates he pissed off. Then, he begin to doubt that things are as they seem. Ignores HoH!
Percy Jackson and the Olympians - Rated: T - English - Adventure/Friendship - Chapters: 8 - Words: 32,631 - Reviews: 81 - Favs: 170 - Follows: 179 - Updated: 12/13/2015 - Published: 8/8/2013 - Nico A.
The Sharpest Lives by
Evil Mockingbird reviews
When the only hope for Magical Britain is in huge danger, what's a goddess to do? Send Nico di Angelo out to help him, of course! But when The GT friendship start to fall apart, Nico's past comes back to haunt him, and every one of his problems develop a voice, Harry starts to crack. LOTS of non-canon references, Ron, Hermione & Dumbles bashing, HBP, OOC. Insanity, Dark themes.
Crossover - Harry Potter & Percy Jackson and the Olympians - Rated: T - English - Friendship/Mystery - Chapters: 14 - Words: 82,454 - Reviews: 63 - Favs: 143 - Follows: 169 - Updated: 10/26/2015 - Published: 6/1/2014 - [Harry P., Hecate] [Nico A., Lacy]
Across the Universes by
Lunar Crystallos reviews
At a great cost the Second Giant War was won. Gaia was defeated and the Olympians triumphed. But one powerful enemy survived, and Nico Di Angelo will have to pay the price. (AU after the first Avengers movie and House of Hades.)
Crossover - Percy Jackson and the Olympians & Avengers - Rated: T - English - Adventure - Chapters: 9 - Words: 29,773 - Reviews: 110 - Favs: 188 - Follows: 319 - Updated: 8/2/2015 - Published: 6/23/2014 - Nico A., Hecate, Black Widow/Natasha R., Hawkeye/Clint B.
Humanity's Worst Enemy by
Deadly7Sins reviews
The Avengers face their most difficult enemy yet. One that is everywhere and has always been lurking in the shadows. In this difficult fight the Avengers need to push through all personal challenges to face the real threat. Will this be the end of the Earth as we know it? Or will Earth's Mightiest Heroes save themselves and ultimately the world?
Crossover - Percy Jackson and the Olympians & Avengers - Rated: T - English - Drama/Adventure - Chapters: 1 - Words: 1,822 - Reviews: 15 - Favs: 13 - Follows: 26 - Published: 3/24/2015 - Nico A., OC, Captain America/Steve R., Loki
Worldwalker by
spectaculaire reviews
Was it a coincidence that two talented teenagers from two different worlds happened to meet at a clothing store? Certainly not. Nico finds himself accepted by the House of Life, although he knows it's best to stay away. Will Nico be able to walk between three different worlds - Greek, Roman and Egyptian - while ensuring they never collide?
Crossover - Percy Jackson and the Olympians & Kane Chronicles - Rated: T - English - Humor/Adventure - Chapters: 10 - Words: 20,067 - Reviews: 260 - Favs: 313 - Follows: 385 - Updated: 11/23/2014 - Published: 8/3/2013 - Nico A., Carter K., Sadie K.
Children of the Underworld by
Asilda reviews
Alliance AU. Sequel to Breaking the Gods. With Nico's soul at stake, Percy takes a risk and reveals all that they've been hiding to Annabeth, Thalia, and Jason. United with the Kanes, a desperate search begins, but no one can foresee where it will take them, or what they'll find along the way.
Crossover - Percy Jackson and the Olympians & Kane Chronicles - Rated: T - English - Friendship/Adventure - Chapters: 8 - Words: 36,354 - Reviews: 813 - Favs: 693 - Follows: 781 - Updated: 9/27/2013 - Published: 2/17/2013 - Percy J., Anubis
Earth's Servant by
SinSidhe reviews
Sequel to Death's Avenger. Like most murder investigations, it started with a body. But this time it was a demigod's body, and the murder was performed by neither a monster nor a mortal. With a threat to all Halfbloods, and the attempted assassination of the Avengers, Nico will be forced to use the powers he swore never to use. But once again, he has no choice in the matter...
Crossover - Percy Jackson and the Olympians & Avengers - Rated: T - English - Chapters: 1 - Words: 2,847 - Reviews: 217 - Favs: 322 - Follows: 454 - Published: 7/15/2013 - Nico A.