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The Defenders of Humanity by Johnnieboy11 reviews
After the Battle on Mantle's Approach, the Master Chief and his companion AI, Cortana, find themselves in a strange time and place. To survive, the two and those that would come to follow them shall seek allegiance to Earth's Mightiest Heroes, in order to prepare for and counter a great threat to not just mankind, but the wider Universe.
Crossover - Halo & Avengers - Rated: M - English - Adventure/Sci-Fi - Chapters: 5 - Words: 19,360 - Reviews: 54 - Favs: 278 - Follows: 374 - Updated: 8/15 - Published: 3/12/2022 - [Cortana, Master Chief/John-117] Captain America/Steve R., Iron Man/Tony S.
Reunited by made.of.stars13 reviews
Steve Rodgers and Hazel Levesque met a long, long time ago. Soon, they will meet again. Rated T, just in case!
Crossover - Percy Jackson and the Olympians & Avengers - Rated: T - English - Friendship/Hurt/Comfort - Chapters: 1 - Words: 837 - Reviews: 4 - Favs: 3 - Follows: 5 - Published: 8/14 - Hazel L., Captain America/Steve R., Bucky Barnes/Winter Soldier
Ultra Awful by Nycorson reviews
When Ultron springs out of the depths of Tony's workshop can Xander be the voice of reason or will he lose everything.
Crossover - Buffy: The Vampire Slayer & Avengers - Rated: K+ - English - Adventure - Chapters: 7 - Words: 14,983 - Reviews: 20 - Favs: 71 - Follows: 114 - Updated: 8/14 - Published: 10/8/2021 - Xander H., Captain America/Steve R., Thor, Darcy L. - Complete
Marvel's Superman by Norrin The Bookworm reviews
This is the story of Kal-El. The Last son of Krypton who crash landed on Earth, but not the one we are all used to. Instead Kal El crash lands in the MCU. This is the story of Kal-El the boy who even in a universe of Marvels, filled with; billionaires in suits of armor, super soldiers, Norse gods, spies and monsters becomes the greatest hero on Earth... Superman.
Crossover - Superman & Avengers - Rated: T - English - Adventure/Drama - Chapters: 1 - Words: 13,889 - Reviews: 5 - Favs: 22 - Follows: 29 - Published: 8/14
Magical Marvel by athassprkr reviews
A sick 16 year old MC dies at the same time, emerald eyes open up confused. Shouldn't I be dead? Why the hell am I so tiny? What's my name? What are these voices in my head? Follow the young telepath as she make way in a world of gods and magic. Will she make her mark in this scary world or did she already do so. Fuck, time travel is really confusing. (SI!Fem!Harry) TimeTravel
Crossover - Harry Potter & Avengers - Rated: M - English - Adventure/Fantasy - Chapters: 365 - Words: 826,575 - Reviews: 2726 - Favs: 3,493 - Follows: 3,840 - Updated: 8/14 - Published: 7/2/2021 - Harry P.
Road Trip: Storybrooke by Michael Weyer reviews
Infinity Crisis tie-in. On their way to see Hawkeye, Kate and Yelena take a detour while meeting some transplanted ladies and find themselves in a magical town about to uncover a larger threat. Crossover with OUAT/Lost Girl/Wynonna Earp/Descendants.
Crossover - Once Upon a Time & Avengers - Rated: T - English - Chapters: 3 - Words: 22,300 - Reviews: 25 - Favs: 26 - Follows: 23 - Updated: 8/13 - Published: 7/11/2022
Widow's Vengeance by JustBored21 reviews
Natasha Romonaoff and Hawkeye found themselves teleported into another world, only they were now babies. As they grew up they discovered their magic, they knew about magic before, 'how' you might ask. Simple, they had known thanks to Natasha's dead husband who had actually travelled to their world from his own, his name was Harry Potter. And guess what, he's alive and young now.
Crossover - Harry Potter & Avengers - Rated: M - English - Romance/Adventure - Chapters: 24 - Words: 63,010 - Reviews: 1081 - Favs: 3,920 - Follows: 5,049 - Updated: 8/13 - Published: 1/15/2021
Mim Potter Stark and Finding a Family by xJLCSAADFRNCx reviews
Mim Potter was about to her her world changed forever. Her Uncle Remus had spent the last few years searching for her biological father in hopes to get her away from the Dursley's and he found him Tony Stark. FemHarry, GirlHarry
Crossover - Harry Potter & Avengers - Rated: T - English - Family/Friendship - Chapters: 20 - Words: 34,481 - Reviews: 179 - Favs: 980 - Follows: 1,329 - Updated: 8/13 - Published: 7/31/2020
Office plaything side story 2-Hotel escapades by valpolyto
Just a list of the things Clarke Griffin and her lovers have done over time in various hotel rooms. Let's put it this way, there's a very strong possibility that those hotel rooms, possibly even the one in Las Vegas, will never be the same after Clarke and her lovers are done with them.
Crossover - Avengers & 100 - Rated: M - English - Romance - Chapters: 1 - Words: 5,028 - Favs: 1 - Published: 8/12 - Black Widow/Natasha R., Captain America/Steve R., Hulk/Bruce B., Clarke G. - Complete
Ben 10 the Avenger once again by Longneck Prime reviews
Learning that Captain America died on A-Day. Ben Tennyson goes into self exile as Humungosaur for the next 5 months until one day the Avengers will return
Crossover - Ben 10 & Avengers - Rated: T - English - Humor/Adventure - Chapters: 1 - Words: 955 - Reviews: 2 - Favs: 2 - Follows: 3 - Published: 8/12 - Ben T., Captain America/Steve R., Iron Man/Tony S.
The Black Widow of Hogwarts by panchild19 reviews
One peaceful day at Hogwarts School of Witchcraft and Wizardry Glow arrived to show them the future of one Draco Malfoy. Or as he's more commonly known as, Agent Malfoy, the Silver Widow.
Crossover - Harry Potter & Avengers - Rated: T - English - Humor/Adventure - Chapters: 2 - Words: 2,945 - Reviews: 5 - Favs: 14 - Follows: 18 - Updated: 8/12 - Published: 12/12/2022 - Draco M., Harry P., Black Widow/Natasha R., Hawkeye/Clint B.
Marvel : Hyperion by SunGod499 reviews
Hyperion is one of the 11 Eternals who came to Earth to protect the inhabitants from the predators made opposite to then. The Deviants. Hyperion is by far the special one of the bunch as he has multiple abilities making him the strongest one of them all. After the Eternals separated, he chose to roam around the world to learn new things and blend in but one event turned things upsi
Crossover - Marvel & Avengers - Rated: K+ - English - Adventure/Fantasy - Chapters: 16 - Words: 49,054 - Reviews: 16 - Favs: 42 - Follows: 53 - Updated: 8/12 - Published: 1/20 - M. Milton/Hyperion, Captain America/Steve R., Thor, Iron Man/Tony S.
Child of Two Worlds by DjinnAtwood reviews
Il a été proclamé le Survivant, déclaré le Sauveur d'Angleterre et un héros pour un mensonge. Si Jon Stark doit devenir un héros, ce sera selon ses propres termes, et pas à cause des lubies d'une société d'hurluberlus. Heureusement pour lui, sa famille est là, et ne laissera personne lui marcher dessus.
Crossover - Harry Potter & Avengers - Rated: T - French - Family/Drama - Chapters: 79 - Words: 118,832 - Reviews: 472 - Favs: 542 - Follows: 683 - Updated: 8/12 - Published: 2/23/2017 - Harry P., Captain America/Steve R., Iron Man/Tony S.
Harry Potter El Eterno Kryptoniano by Elpadre2112 reviews
La vida de Harry Potter no es fácil después de todo ser un ser único en la historia del universo no es algo fácil pero el es poderoso y tiene a muchos aliados para ayudarlo para defender la tierra y a sus seres queridos, después de todo el es Superman el vengador mas poderoso. Arco de Thor Un Mundo Oscuro.
Crossover - Harry Potter & Avengers - Rated: M - Spanish - Adventure/Romance - Chapters: 82 - Words: 514,709 - Reviews: 59 - Favs: 141 - Follows: 155 - Updated: 8/12 - Published: 1/31/2022 - Harry P., OC
Mischief Managed by mystiquewitch reviews
Loki didn't always feel like an outcast; there was a time he felt accepted, admired, had friends, a place where he felt at home, the Midgardian Magical Community, the place where the child Loki abandoned and his former lover lived, so after losing the battle of New York, Loki decides to escape and hide amongst the wizards, too bad nothing is how Loki expected it to be.
Crossover - Harry Potter & Avengers - Rated: M - English - Family/Adventure - Chapters: 41 - Words: 218,672 - Reviews: 71 - Favs: 314 - Follows: 423 - Updated: 8/11 - Published: 11/9/2022
Two Worlds Collide by Frosted Dreams 1234 reviews
Emily Hayes never knew anything more than living on a Starship for the first four years of her life. But when the Kelvin is destroyed by the Romulans, her destiny is suddenly altered in unexpected ways. As she grows on Earth, so does her relationship with the people who surround her, and her choices lead to unexpected and positive consequences along the way. Read Full note inside.
Crossover - Star Trek: 2009 & Avengers - Rated: T - English - Romance/Drama - Chapters: 97 - Words: 428,262 - Reviews: 8 - Favs: 26 - Follows: 31 - Updated: 8/11 - Published: 1/29/2019 - [L. McCoy/Bones, OC]
Therapy of the pleasurable sort by valpolyto
Clarke Griffin never thought that she would end up doing this. That she would end up going to a dungeon and actually enlisting professional doms to show her a good time. Then again, her whole life has been unconventional, so she figures her therapy probably will be as well. She however, is definitely not ready for the doms that she meets. Not by a long shot.
Crossover - Avengers & 100 - Rated: M - English - Romance - Chapters: 1 - Words: 3,755 - Published: 8/11 - Black Widow/Natasha R., Iron Man/Tony S., Hela, Clarke G. - Complete
Je te vois, Dieu de vérités by MissHealthyOneShot reviews
Le Seigneur des Ténèbres rassemble ses forces, du moins c'est ce qu'a entendu dire Aragorn. Conduisant une troupe de Rohirrim à travers les terres dévastées du Pays Noir, le rôdeur et ses compagnons font une rencontre inattendue qui chamboulera à jamais l'équilibre de la Terre du Milieu.
Crossover - Lord of the Rings & Avengers - Rated: K - French - Adventure/Drama - Chapters: 4 - Words: 9,680 - Reviews: 3 - Follows: 2 - Updated: 8/11 - Published: 8/6 - Aragorn
Planet of the Apes by Nova Vere reviews
Waking up on another planet is hard. Waking up on another planet, in a cave, surrounded by battle hungry and… well, regular-hungry aliens? Yeah, that sucks, but it's the realization of 'oh, I'm supposed to lead these troglodytes' that really sends it home. "What do you mean 'Frieza who', and who the hell is Thanos!" (SI as King Vegeta)
Crossover - Dragon Ball Z & Avengers - Rated: M - English - Adventure/Humor - Chapters: 5 - Words: 33,799 - Reviews: 21 - Favs: 58 - Follows: 71 - Updated: 8/11 - Published: 8/1 - Nappa, Bardock, King Vegeta, OC
Avenging Avatar Book 3- Fire by TheWriterForGod42 reviews
The team must regroup after a devastating loss to the Fire Nation. With an assortment of new allies, they plan to take the fight right to the heart of the Fire Nation and Hydra. They'll face many challenges and trials if they are to overcome their enemies and save the world.
Crossover - Avatar: Last Airbender & Avengers - Rated: K+ - English - Adventure/Friendship - Chapters: 1 - Words: 7,286 - Reviews: 6 - Favs: 11 - Follows: 12 - Updated: 8/10 - Published: 12/18/2022 - Aang, Ozai, Iron Man/Tony S., Red Skull
Lillium: Cita clandestina by Tsuruga Lia1412
El agente Barton está actuando raro y todos se han dado cuenta. Todos sacan sus conclusiones, en las que predominan las suposiciones es que Clint tiene una cita clandestina con alguien caliente. Lo que ninguno imagina es Barton tenía una vida antes de unirse a SHIELD. female Harry Potter
Crossover - Harry Potter & Avengers - Rated: M - Spanish - Romance/Drama - Chapters: 11 - Words: 10,547 - Favs: 18 - Follows: 22 - Updated: 8/10 - Published: 1/17 - Harry P., Black Widow/Natasha R., Hawkeye/Clint B., Agent Phil Coulson
Checkmate by Killer1398 reviews
The past becomes the present. Will Alice black be able to face her Demons or or will she fail? Find out in Checkmate. Slow updates
Crossover - Harry Potter & Avengers - Rated: M - English - Adventure/Drama - Chapters: 5 - Words: 5,108 - Reviews: 1 - Favs: 2 - Follows: 2 - Updated: 8/10 - Published: 12/4/2022 - Sirius B., OC, Black Widow/Natasha R., Nick F.
A Story of A Multiverse: Torn From My World by GrimesAllen08 reviews
Takes place after The Flash 2x23. In one reality, Barry created Flashpoint after the death of his father. In another, things took a drastic turn. Barry finds himself trapped in a completely different earth, ripped away from his loved ones and thrown into a constant battle for survival in a zombie apocalypse. Making friends and foes, old and new, can he survive? Or will he fail?
Crossover - Flash & Avengers - Rated: M - English - Sci-Fi/Angst - Chapters: 22 - Words: 75,554 - Reviews: 37 - Favs: 13 - Follows: 14 - Updated: 8/10 - Published: 4/8 - Barry A./The Flash, Black Widow/Natasha R., Captain America/Steve R., Iron Man/Tony S.
Innocent by SoaringHurricane
Clarke Griffin is aware of something that a lot of people are not, about Natasha Romanoff. It's this, that Natasha Romanoff, even if she admits to it or not? Is innocent. Natasha is just so good that Clarke refuses to believe that her soulmate is not innocent. Even if Natasha is unaware of it. But then? Knowing Clarke for much longer might just change that.
Crossover - Avengers & 100 - Rated: M - English - Romance - Chapters: 1 - Words: 1,654 - Published: 8/10 - Black Widow/Natasha R., Clarke G. - Complete
Warlock : The Beginning by Black - The Writer reviews
After the disastrous fourth year, Harry goes on a trip with the Dursleys to America, where he crosses with someone or something that changes his entire path. Beware Voldemort and Wizarding Britain. It is not Harry Potter that is coming for you. It is the WARLOCK. Superhero Harry story.
Crossover - Harry Potter & Avengers - Rated: T - English - Adventure - Chapters: 3 - Words: 3,666 - Reviews: 19 - Favs: 138 - Follows: 246 - Updated: 8/9 - Published: 4/27 - Harry P., Sirius B., OC
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