Halo Crossovers
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A Huntress In A Demon's World by Rajin Kaijun reviews
Awakening on a strange ringworld occupied by The Banished hellbent on destroying humanity, Ruby Rose joins the Master Chief and his new AI companion in hopes to not only defeat this new threat but also finding a way back to Remnant. This isn't Remnant anymore, she has to play by Halo's rules. (Slight AU Infinite)
Crossover - Halo & RWBY - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 26,356 - Reviews: 21 - Favs: 96 - Follows: 149 - Updated: 6/26 - Published: 8/9/2022 - Master Chief/John-117, Ruby R., Atriox, Cortana
The Persean War by Johnnieboy11 reviews
In a split-second, reality becomes completely different than what one was used to. Though, the more some things change, the more they stay the same. War remained a constant in the Persean Sector, even as a fragile peace and a tenuous alliance formed, the Remnant, Ancient AIs of the Old War, struck at one of the nations, causing a shift that will ripple throughout a new world.
Crossover - Halo & Starsector - Rated: T - English - Sci-Fi/Supernatural - Chapters: 1 - Words: 5,400 - Reviews: 5 - Favs: 26 - Follows: 37 - Published: 6/26 - Master Chief/John-117, A. J. Johnson, C. Halsey, Cortana
Machines and Might by Strategic.Ignorance reviews
Eight years before the USJ Incident, the Hero Public Safety Commission learns of the Meta Liberation Army. Doubting the current heroes ability to stop this threat, the Commission sees this as the perfect opportunity to usher in a new age of heroes. The first step is to kidnap dozens of children. Among them is Izuku Midoriya. Moderate AU.
Crossover - Halo & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Sci-Fi/Friendship - Chapters: 20 - Words: 83,190 - Reviews: 136 - Favs: 361 - Follows: 460 - Updated: 6/25 - Published: 12/1/2021 - William-043, Izuku M., Hitoshi S., Mei H.
Halo: RWBY Evolved by Danilyss reviews
After what was thought to be a simple mission, team RWBY wind up as stowaways aboard a phantom on the Seeker of Truth as it rendezvous with the Fleet of Particular Justice in order to await for the arrival of the Pillar of Autumn. Now caught in a war none of the girls would ever have imagined, they must fight alongside the Master Chief and the Marines against the Covenant.
Crossover - Halo & RWBY - Rated: T - English - Sci-Fi/Horror - Chapters: 2 - Words: 14,251 - Reviews: 18 - Favs: 50 - Follows: 79 - Updated: 6/25 - Published: 5/12 - Master Chief/John-117, A. J. Johnson, Cortana, Team RWBY
Unknown events have unmeasurable answers by El callampas reviews
When someone contacts the Quarians about old machinery, they should think twice before engaging with a strange yet so familiar species, a war, and circumstances that will shock two galaxies now that the rift is open.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Drama - Chapters: 19 - Words: 171,873 - Reviews: 331 - Favs: 529 - Follows: 749 - Updated: 6/25 - Published: 4/21/2022 - [Master Chief/John-117, Tali'Zorah] J. Cutter
Eternity Into The Void by ProfessorZooms reviews
The Reclamation has begun and the UNSC Eternity is now on the run after fleeing the Orion Arm - into the safety of slipspace. Only to end up marooned on a strange magical world. Inspired by an earlier Halo x FoZ fanfic called "Zero to Infinity"
Crossover - Familiar of Zero & Halo - Rated: M - English - Sci-Fi/Fantasy - Chapters: 21 - Words: 131,035 - Reviews: 270 - Favs: 473 - Follows: 636 - Updated: 6/24 - Published: 4/10/2022
ARES:The Gods of War by Johnnieboy11 reviews
Mankind's Greatest Hero has finished his mission once more. Saving Earth from the Didact and his weapon of mass-recruitment, the Composer, the Master Chief and his AI companion, Cortana, find themselves mysteriously transported to a strange variation of Earth, where machines rule the surface and mankind hides below. The SPARTAN and those that join will fight to Reclaim the world...
Crossover - Halo & Goddess of Victory: Nikke - Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 12,170 - Reviews: 39 - Favs: 212 - Follows: 284 - Updated: 6/23 - Published: 11/29/2022 - Master Chief/John-117, Cortana, Commander, Rapi
Many hands make light work by Polluxsashes reviews
A normal twenty-first century human mind stuck inside a Huragok, a Forerunner biobot, gets punted straight into the worst place anyone could ever be: Warhammer 40k. What is he to do but what he is made for? Beware all who call this horrid universe home, you will be 'halped'. First story on this site, updates every 2 weeks. I have up to chapter 11 already written.
Crossover - Warhammer & Halo - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 9,242 - Reviews: 36 - Favs: 135 - Follows: 203 - Updated: 6/22 - Published: 4/27
The Spartan Of Smallville by SSJ Lone Wolf reviews
Between the Insurrectionists and the Covenant, he thought he had done and seen it all. But after being transported to an alternate universe and settling down in Smallville, Spartan-B312 realizes that his toughest challenge is about to begin...High School. He'll soon learn that there is more to this quiet little town than he initially thought.
Crossover - Smallville & Halo - Rated: M - English - Chapters: 5 - Words: 36,363 - Reviews: 144 - Favs: 293 - Follows: 330 - Updated: 6/20 - Published: 8/18/2022 - Clark K./Superman, Lex L., SPARTAN-B312/Noble Six
On the Shoulders of Giants by Shoot The Runner reviews
Two galaxies thrown together by a cosmic fluke. On one side of the galaxy, the war-weary UNSC vows to rebuild and become a giant in the stars so that they will never be so helpless again. Whilst another humanity is still finding its feet in the Citadel, with treachery and politics hindering its progress. How does the merging of two galaxies impact the course of all of their fates?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 9,844 - Reviews: 30 - Favs: 180 - Follows: 226 - Published: 6/20 - Master Chief/John-117, T. Hood, Shepard, D. Udina
Halo: The Search For Ezra Bridger by GigaSlayer reviews
Three years after the Liberation of Lothal, Ahsoka and Sabine continue their search for Ezra Bridger, they have recently heard rumours of a massive shipwreck free for salvage deep in the Unknown Regions, thinking it may be related to Ezra in some way they cross the boundary of the Unknown Regions. Beginning the adventure of a lifetime.
Crossover - Halo & Star Wars Rebels - Rated: T - English - Sci-Fi/Horror - Chapters: 5 - Words: 5,293 - Reviews: 7 - Favs: 36 - Follows: 46 - Updated: 6/20 - Published: 5/20 - Master Chief/John-117, Ahsoka T./Fulcrum, Sabine W.
The Promise by Mr. Blackberry reviews
During his time as a student, Naruto found something. Something that would help him greatly in the future. Fast forward he has lost his home world to the covenant. He along with the few friends that he was able to save will not stop until the covenant is brought to its' knees. That is their promise.
Crossover - Halo & Naruto - Rated: M - English - Adventure/Sci-Fi - Chapters: 4 - Words: 13,742 - Reviews: 31 - Favs: 174 - Follows: 202 - Updated: 6/19 - Published: 8/31/2020 - Naruto U., Sakura H., Hinata H.
Different Realities by Blue-Jay1009 reviews
As the Autobots and Decepticon stumble across a strange device that is of unknown origin. As one of their human friends accidentally activates the device it transports the two wagering factions and humans into a different universe where they landed on a dead planet that belongs to an advanced humanity a few years prior to the war with the covenant been over.
Crossover - Transformers/Beast Wars & Halo - Rated: T - English - Drama/Adventure - Chapters: 7 - Words: 15,144 - Reviews: 34 - Favs: 118 - Follows: 136 - Updated: 6/19 - Published: 1/4/2022 - Bumblebee, Optimus Prime, Master Chief/John-117, Cortana
The Wizard from Tribute (CANCELLED) by PhillyCh3zSt3ak reviews
The year is 2552 and humanity has just escaped genocide from the Covenant thanks to the Great Schism. Harry's family is killed by Brutes and is sent to an orphanage after being rescued by an unlikely ally. He is later adopted by a certain ODST. What will happen when the worlds of magic and advanced technology meet? Rated T for safety. -Cancelled as of 6/19/23.-
Crossover - Harry Potter & Halo - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 9,200 - Reviews: 35 - Favs: 122 - Follows: 153 - Updated: 6/19 - Published: 11/25/2015 - Harry P., Rookie - Complete
Forward Unto Johto by Full-Paragon reviews
Not long after the Great War, ONI has discovered a lost colony filled with strange life forms, and potentially full of powerful artifacts from the same race that built the Halo array. Seeking further information, and potentially powerful new weapons, ONI has dispatched an elite team to investigate the lost colony. As a part of that team, Titus Rann finds himself on a new world, wit
Crossover - Pokémon & Halo - Rated: T - English - Mystery - Chapters: 2 - Words: 10,789 - Reviews: 4 - Favs: 15 - Follows: 24 - Updated: 6/18 - Published: 6/9 - Magikarp
Darksiders Apocalyptic Warfare Chronicle One Combat Evolved by darksidersfollower97
The legendary Four Horsemen of the Apocalypse are in this alternative unvierse were order not to directly intervene for humanity during the human-Covenant war but during the Battle of Halo after the fall of reach things become complicated or chose another story in the first page.
Crossover - Darksiders & Halo - Rated: T - English - Sci-Fi/Supernatural - Chapters: 1 - Words: 1,279 - Favs: 2 - Follows: 3 - Published: 6/18
Serenity by Space-Dweeb reviews
2542. Humanity lost the war against the Covenant, and has been assimilated into the galaxy-spanning conglomerate. John-117 and his crew, formerly humanity's greatest champions, were forced into a life of crime in order to survive. Aboard the Firefly-class ship Serenity, they travel the galaxy with one mission: get a ship, get a crew, keep flying.
Crossover - Halo & Firefly - Rated: T - English - Sci-Fi/Western - Chapters: 10 - Words: 43,072 - Reviews: 9 - Favs: 21 - Follows: 30 - Updated: 6/17 - Published: 8/14/2022 - [Master Chief/John-117, Cortana] [Fred-104, Kelly-087]
Forward Unto Dawn by Frozone8010
In the 2468 57 years before the fateful day on harvest, a discovery was made. A discovery that will shake the very foundations of what humanity believed was truth and myth. What or Who was this discovery?
Crossover - Dragon Ball Z & Halo - Rated: K+ - English - Sci-Fi/Mystery - Chapters: 1 - Words: 1,456 - Favs: 4 - Follows: 8 - Published: 6/17 - Goku, Shenron, 343 Guilty Spark, C. Halsey
All the Stars by BlueWay reviews
When the Long Night of Solace is evaporated over Reach via the weaponized usage of a Slipspace Drive, it ferries with it in its swallowed sections the Covenant Empire and, more horrifyingly, the desperate measures that the UNSC used to fight them. When they are found in a universe on the precipice of their own history, the meaning of the term "Mass Effect" will change forever.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 45 - Words: 777,857 - Reviews: 1285 - Favs: 1,788 - Follows: 2,139 - Updated: 6/16 - Published: 6/8/2018 - SPARTAN-B312/Noble Six, Rookie
Machine Hearts (A Dust and Echoes Megaman BN cross) by BaronCorrupt
RWBY/Halo/Megaman.exe recursive fic of Dust and Echoes by Trest
Crossover - Mega Man & Halo - Rated: M - English - Sci-Fi/Friendship - Chapters: 3 - Words: 11,747 - Favs: 2 - Follows: 1 - Updated: 6/16 - Published: 6/14 - Master Chief/John-117, Cortana
The Last Metroid by ShadowLight223 reviews
Her Metroid dna has taken over, resulting in a monstrous transformation. Unable to control her powers, when attempting to escape ZDR, her ship loses power due to her actions. She can't remember what happened after that, but now, all she sees is the blackness of space, left drifting, alone. In the distance, the broken body of a frigate is seen, with the name of Forward Unto Dawn…
Crossover - Metroid & Halo - Rated: M - English - Sci-Fi/Suspense - Chapters: 21 - Words: 97,286 - Reviews: 200 - Favs: 280 - Follows: 417 - Updated: 6/15 - Published: 9/20/2022 - Samus A., Master Chief/John-117
The Terran Calamity by F35B reviews
The Republic finds a small planet on the edge of their space but little do they know the repercussions of their actions. The Terran Eagle will not accept any compromises, nor will any of her citizens. (Halo Inspired Universe) (Star Wars Canon Universe)
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi - Chapters: 7 - Words: 60,036 - Reviews: 112 - Favs: 298 - Follows: 365 - Updated: 6/14 - Published: 1/3 - OC
Roses Born of Dust by TallYapflip reviews
An ONI Prowler is sent to a small system on the Southern fringes of UNSC space, just along the border with the Sangheili, to investigate strange signals coming from a planet within. He encounters strange situations, strange people, and the strangest world in the galaxy. [White Rose & Bumblebee. Rated "M" For later.] (All Re-writes complete)
Crossover - Halo & RWBY - Rated: M - English - Sci-Fi/Romance - Chapters: 45 - Words: 245,266 - Reviews: 499 - Favs: 880 - Follows: 935 - Updated: 6/14 - Published: 10/26/2015 - [Weiss S., Ruby R.] [OC, Winter S.]
Everything is Fair in Love and War by VastErimos reviews
So you died? Nailed it. Here try again for my entertainment. OPMC, Waifu Catalog fic, if you have a problem with either of these that’s fine. Currently in Stargate.
Crossover - Halo & X-overs - Rated: M - English - Sci-Fi/Friendship - Chapters: 10 - Words: 39,270 - Reviews: 34 - Favs: 71 - Follows: 96 - Updated: 6/13 - Published: 8/9/2022 - Fred-104, Serina
Sekirei: The Lost Wolf by Helghast honored guard reviews
The Lonewolf survived and made it off Reach .Now he finds himself trapped in another world, another time and another conflict. Up against a madman forcing a race of super powered aliens to fight to the death to bring a new age of the gods . (Six and Harem)
Crossover - Halo & Sekirei - Rated: M - English - Sci-Fi/Romance - Chapters: 15 - Words: 100,310 - Reviews: 103 - Favs: 317 - Follows: 411 - Updated: 6/13 - Published: 3/2/2022 - SPARTAN-B312/Noble Six, No. 12/Hibiki, No. 11/Hikari, No. 16/Toyotama
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