1k+ Heroes and Ghosts » by LostHeroGuide Clint Barton didn't expect visitors in Homestead. Especially teenagers stealing from him in the middle of the night. But when Clint confronts him and realizes he's not alone... well, what's he's supposed to do? The Avengers have everything, it seems, but a family man. Featuring fanboy Thor, Steve's overprotective nature, and twice the Jackson as you'd expect. (Percabeth later on.)
Percy Jackson and the Olympians & Avengers, T, English, Adventure & Romance, chapters: 51, words: 202k+, favs: 2k+, follows: 2k+, updated: 8/25 published: 9/7/2015, [Percy J., Annabeth C.] [Hawkeye/Clint B., Laura B.]
2k+Strange Visitors From Another Century » by Izzyaro The destruction of the time turners in the Department of Mysteries throws Harry, Ron and Hermione a thousand years into the past. There they meet the Founders of Hogwarts, who are not at all pleased about what has happened to their school. They decide that something must be done.
Harry Potter, T, English, Friendship & Adventure, chapters: 29, words: 269k+, favs: 6k+, follows: 7k+, updated: 1/11 published: 9/23/2012, Harry P., Ron W., Hermione G., Salazar S.
66 Finding A Balance » by mightyglowpillow Percy has fallen into an endless void of depression, and he can't seem to find a way out. Poseidon has grown restless, begging Zeus to search for something to help his son. When the king of Olympus sees the Avengers, he asks for their help. How will Percy adjust to his new teammates and move on from his past? Or can he? (Fair warning: does include self harm.)
Percy Jackson and the Olympians & Avengers, T, English, Hurt/Comfort & Family, chapters: 4, words: 7k+, favs: 210, follows: 327, updated: 5/2/2019 published: 9/9/2016, Percy J., Captain America/Steve R., Iron Man/Tony S.
286 Fate's Finale » by Venquine1990 Mount Olympus is in America. But did the Gods really keep their flings inside the US? And if they didn't, what happens to the European Demigods? That's what Harry, Percy and friends will find out as a new Prophesy unfolds, new bonds are created and a new future is planned out for all. Starts Summer OotP and after HoO. Haven't read either, don't read this! Warning Malexmale bonds!
Harry Potter & Percy Jackson and the Olympians, T, English, Family & Mystery, chapters: 47, words: 287k+, favs: 434, follows: 406, updated: 11/30/2018 published: 12/31/2015, Harry P., Sirius B., Hades, Percy J.
604 Marvel's Percy Jackson » by Manimal After leaving camp two years after the 2nd Giant War, Percy Jackson realizes that his specific skill set isn't good for much in the mortal world. When an unforeseen situation arises, he becomes a mercenary. Years later, the mortal world faces danger from the godly world once again. Or a godly world, anyway. This time, though, it's the mortals' own fight. Mostly.
Percy Jackson and the Olympians & Avengers, T, English, Adventure & Suspense, chapters: 15, words: 50k+, favs: 2k+, follows: 3k+, updated: 10/13/2018 published: 12/26/2015, Percy J., Black Widow/Natasha R., Captain America/Steve R., Nick F.
5k+Son of the Sea God » by Sassenach082 Zeus kills Sally Jackson with his master bolt when Percy is six months old, drastically changing Percy's life and the course of his future. AU.
Percy Jackson and the Olympians, T, English, chapters: 21, words: 72k+, favs: 12k+, follows: 12k+, updated: 2/17/2018 published: 11/17/2012, Percy J., Poseidon, Triton, Amphitrite
801 The Infinity Wars: Divided I Stand » by 100th Century The Nine Realms are at peace, the Camps are enjoying freedom, and the Avengers have settled down—all seems well. But an imposter sits on Asgard's throne and something lurks in the shadows of the universe while primordial beings stir. The Norns cackle, the Fates furiously spin yarn, and the Parcae chant: The end is nigh. And Thanos is just the tip of the iceberg.
Percy Jackson and the Olympians & Avengers, T, English, Humor & Adventure, chapters: 32, words: 214k+, favs: 761, follows: 932, updated: 1/2/2018 published: 3/21/2016, [Annabeth C., Percy J.] Captain America/Steve R., Iron Man/Tony S.
2k+ Blood Stained » by Flameraiser Harry has been through a lot yet there are some perks to being as gifted as he is. So he's not going to just sit back and let the world shit on him. He's going to best the absolute best. First few chapters are hard to read. Get past those and I promise it gets better. Also, I know the beginning sounds very cliche. It's explained later so try to stick with it. M for bad stuff
Harry Potter & Avengers, M, English, Adventure & Humor, chapters: 46, words: 208k+, favs: 8k+, follows: 7k+, updated: 9/7/2017 published: 9/2/2015, [Harry P., Black Widow/Natasha R.]
3k+ Fates Be Changed » by The Homing Pigeon An orphan and an outcast, living two lives that should never have intercepted. However what could happen if a nudge forces these worlds to collide? With a new name and a new father will the Boy-Who-Lived accept what Fate marked him for? A Bruce Banner/Harry Potter father/son relationship. Skip to Chapter 13 for the start of the Avengers.
Harry Potter & Avengers, T, English, Family, chapters: 69, words: 349k+, favs: 8k+, follows: 7k+, updated: 7/14/2017 published: 7/22/2015, Harry P., Hulk/Bruce B.
762 The Case of the Man Who Was Wanted » by MyDearLadyDisdain After an inexplicable case in Surrey, Sherlock is after the strangest criminal he's ever encountered: a mass murderer, that has eluded the authorities for almost 14 years. Unfortunately, Sherlock Holmes is the only one that can see right away that this Harry Potter character is completely innocent. And hang on, is that tea set floating? (Harry/Sherlock)
Harry Potter & Sherlock, M, English, Adventure & Romance, chapters: 25, words: 144k+, favs: 1k+, follows: 2k+, updated: 4/8/2017 published: 2/23/2014, Harry P., Hermione G., Sherlock H., John W.
67 Agitato » by Nienna3791 Alex Rider, renowned violinist, is only nineteen. When he meets his new accompanist and an assassin appears, Alex is forced to seek out MI6 one last time. Between K Unit, Tom Harris, and crimes that don't add up, Alex's carefully constructed life is coming apart at the seams, forcing him back into old memories and nightmares. When he can't trust his own mind, where can he go?
Alex Rider, T, English, Drama & Friendship, chapters: 22, words: 99k+, favs: 67, follows: 67, updated: 2/6/2017 published: 7/23/2016, Alex R./Cub, Ben D./Fox, Tom H., Wolf
1k+ All in the Faculty » by Monster Mads Workaholic Alex Rider is given one month's vacation time against his will. Seeing that he doesn't actually have a life outside, well, spying, he's not entirely sure what to do with himself. So he pays Professor Harris a visit as his new, ahem, "assistant teacher". Alex/Tom!Friendship.
Alex Rider, T, English, Humor & Drama, chapters: 43, words: 253k+, favs: 551, follows: 669, updated: 1/29/2017 published: 10/22/2012, Alex R./Cub, Mrs. T. Jones, Sabina P., Tom H.
30 He's Real! by Sora Moto During an attack by Doom at the Statue of Liberty Thor drops his hammer and has it handed back to him.
Avengers & Rise of the Guardians, K+, English, Humor, words: 1k+, favs: 289, follows: 120, 5/10/2016, Iron Man/Tony S., Thor, Jamie, Sophie
220 Trial and Error » by Blacktipped Angelwings After waking from a coma Alex is shipped off to America to help NCIS solve a case- A scorpia case. Soon Alex becomes Scorpia's main target. What will alex do when lives hang in the balance? How will Alex and NCIS handle this situation?
NCIS & Alex Rider, T, English, Suspense & Hurt/Comfort, chapters: 20, words: 25k+, favs: 328, follows: 373, updated: 12/16/2015 published: 2/25/2012, Leroy Jethro Gibbs, Alex R./Cub
28 The Somalian Fallout » by RugitusAstra K-unit gets involved when Alex Rider comes back from a mission in Somalia plagued with insomnia. A few unusual contact chains later and they're put into contact with a young, American psychologist in Washington, D.C. by the name of Lance Sweets. Bones/Alex Rider crossover, not necessary to have watched Bones. Set post Houseguests/Season 4. Rated T for language, just in case.
Alex Rider & Bones, T, English, Angst & Friendship, chapters: 4, words: 5k+, favs: 119, follows: 67, 3/4/2015
297 A Devil for K-Unit » by moonshroom420 On the hunt for a lost soul, Nico butts heads with the CIA. After completing an assignment to gain their trust, Nico finds himself thrust into life at Brecon Beacons, where he gets put into K-Unit. And he's not the only one underage there... Alex Rider seems to be back and Dr Three is out for him. With Nico's new resolve and determination, how long until something gets blown up?
Alex Rider & Percy Jackson and the Olympians, T, English, Friendship & Adventure, chapters: 24, words: 44k+, favs: 343, follows: 223, updated: 12/26/2014 published: 3/7/2014, Alex R./Cub, Eagle, Wolf, Nico A.
3k+ Secret of Frost and Moon » by Alaia Skyhawk When death turns out not to be the end, you can't help but ask for what purpose you were brought back... What differences would it make, to remember your past right from the begining? To learn your purpose, piece by piece, right from the start? How would that change the life, future, and secrets of the Spirit of Winter; Jack Frost?
Rise of the Guardians, T, English, Friendship & Adventure, chapters: 130, words: 499k+, favs: 2k+, follows: 1k+, updated: 11/2/2014 published: 12/23/2012, Jack Frost
360 The Edge of Breaking » by FrostInTheWarren Jack's first memories were of cold, dark, and fear. Then Pitch found him. Three hundred years later, Jack's locked in a battle for his freedom, and discovering that inner freedom and outer freedom are two very different things. (Or: Pitch does bad things, Jack learns to love himself, and Bunny has patience.) Nature of Belief series spin-off AU. Need not have read. Dark themes.
Rise of the Guardians, M, English, Hurt/Comfort & Romance, chapters: 15, words: 46k+, favs: 627, follows: 322, updated: 9/13/2014 published: 2/21/2014, [Jack Frost, Bunnymund]
541 Like a Phoenix » by chappysmom "So, why are we going to … Little Whinging? How is there even a town named Little Whinging? Is it next to Greater Whinging? Part of Blubbering County? Bisected by the Distraught River, perhaps? Ridiculous." John sighed. "Because Lestrade asked us. He said this was right up your alley—a classic locked room mystery, clearly a murder. Victim's name is Vernon Dursley." (12 chapters)
Harry Potter & Sherlock, K, English, chapters: 12, words: 39k+, favs: 2k+, follows: 858, updated: 10/8/2013 published: 9/12/2013, Harry P., Ron W., Sherlock H., John W.
250 The Devil's Heartbeat » by Jake Caldefore Nonslash, House/AR crossover. Dr. Gregory House was never a patient man, and when he is given the job to diagnose one 'Alex Rider,' he can't believe that the kid could be so...vague. Full summary inside. Rated for language and violence.
Alex Rider & House, M.D., T, English, chapters: 3, words: 4k+, favs: 305, follows: 571, updated: 4/19/2009 published: 11/29/2008, G. House