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The Rook by Twisted Fate MK 2 reviews
On the way down to New Mombasa, Rookie falls into the Slipspace Rupture and ends up crashing down on Menae, high above Palaven, right in the midst of the Reaper War. From there, the war itself will shift and the fighting persists, but who knows what an ODST will add to the mix. (Redo of an older story)
Crossover - Halo & Mass Effect - Rated: M - English - Adventure - Chapters: 5 - Words: 19,463 - Reviews: 41 - Favs: 199 - Follows: 311 - Updated: 50m - Published: 7/8 - Rookie, Shepard
Wrong Place, Right Time: A Hero's Story by DLTA-BOT reviews
The journey of a hero doesn't always start where they expect. It doesn't always happen to those who expect it. Damon was never interested in being what SPARTANs represent: an implacable force for good standing as humanity's shield. Like most other third-generation SPARTANs, the war took everything from him. All he wanted was to return the favor. Sometimes we don't get a choice.
Crossover - Fallout & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 56 - Words: 643,664 - Reviews: 165 - Favs: 311 - Follows: 338 - Updated: 23h - Published: 9/29/2020 - Sole Survivor, Arthur Maxson, Shaun, OC
Halo, Welcome to New York, Part 1: First Landing by SPARTAN-117-2 reviews
When Cortana awakens the slumbering Master Chief to alert him of a wormhole, a whole new war begins. Includes themes and characters from Harry Potter, Halo, Marvel, and some others.
Crossover - Harry Potter & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 6,226 - Reviews: 1 - Favs: 11 - Follows: 13 - Updated: 23h - Published: 9/2 - Harry P., Master Chief/John-117
Project Atlas by Masso 2010 reviews
The Spartans are trained to be unthinking, unflinching and unmoving in the face of the impossible. Project Atlas is so much more, when humanity looks up into the sky they can see Hope, Justice, Reverence. When those that seek to hurt humanity look up into the sky, they see the warrior, the monster, the demon. To those who seek the destruction of humanity, he is the Cataclysm.
Crossover - Superman & Halo - Rated: M - English - Adventure/Sci-Fi - Chapters: 7 - Words: 54,590 - Reviews: 98 - Favs: 192 - Follows: 242 - Updated: 9/29 - Published: 4/17 - Clark K./Kal-El/Superman, Master Chief/John-117
Sierra Remnant by In BRRRRRRT We Trust reviews
It'd been two years since she was 'revived' in the apocalypse. Sierra - 141, Callista Harris, had seen it all and done it all. But now she faces the hardest job of all, childcare. More or less raising a kid by oneself would be near impossible after societal breakdown, anyone but a Spartan. Having been spared the infection by her augmentations, can the same be said for Clementine?
Crossover - Halo & Walking Dead - Rated: M - English - Chapters: 1 - Words: 6,602 - Reviews: 1 - Favs: 6 - Follows: 7 - Published: 9/28 - Cal-141, Kenny, Clementine, Luke
Halo-Naruto: Prologue by Azores reviews
Following Psi Serpentis, the fleeing UNSC Everest finds itself in a star system far from the war or the UEG. Teaming up with the Admiral's old flame from the URF and various other elements fleeing the war, the UNSC finds a world, unlike anything they have ever seen before, while on that same world its inhabitants will have their lives changed forever. AU for both Universe. PROLOGUE
Crossover - Halo & Naruto - Rated: M - English - Sci-Fi - Chapters: 16 - Words: 244,476 - Reviews: 153 - Favs: 279 - Follows: 314 - Updated: 9/27 - Published: 5/7/2015 - P. Cole, OC, Kushina U., OC
Wolves That Walk Alone by TheManThatWalksTheAbyss115 reviews
There's always been growing legends in Remnant. Some of fearless warriors and others of horror, but there's one that's recently been picked up by the inhabitants. A legend of a man who was more akin to a wolf without a pack, barely speaking and doing his deed before leaving without a trace. After all... some people just want isolation rather than company.
Crossover - Halo & RWBY - Rated: M - English - Sci-Fi/Adventure - Chapters: 43 - Words: 345,275 - Reviews: 4468 - Favs: 3,409 - Follows: 3,962 - Updated: 9/27 - Published: 5/8/2019 - SPARTAN-B312/Noble Six, L. Ren, Nora V.
Harry Potter got trained by Driver1985 reviews
On the night Harry would have been dropped off by his Aunt, Dumbledore had someone else in mind. What if Harry was taken in by other strong people and they even decided to train him? Trained to be a Warrior by Wolves and the UNSC, he will change the world. OP, smart, trained Harry, small harem double cross with witcher and halo
Crossover - Harry Potter & Halo - Rated: T - English - Fantasy/Sci-Fi - Chapters: 53 - Words: 242,835 - Reviews: 83 - Favs: 417 - Follows: 492 - Updated: 9/25 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
Halo Gundam by 6-4 pilot reviews
Stuck in the Universal Century during the One Year War, Master Chief and his companions help the White Base Crew survive while also trying to find a way back to Zeta Halo. In the meantime, a group of battle-hardened Banished troops does what their organization does best. Take advantage of conflicts and various organizations for their own benefit.
Crossover - Halo & Gundam UC - Rated: M - English - Sci-Fi - Chapters: 22 - Words: 84,994 - Reviews: 160 - Favs: 62 - Follows: 83 - Updated: 9/25 - Published: 6/22 - Master Chief/John-117, Amuro R.
Halo Galactic Wars: Anthologies by Crimson Soldat reviews
Master Chief and a few others had managed to mark their mark in the Galaxy. Yet there are those that hasn't gained enough attention. Untold stories to those who had placed their mark upon where they were. Both in the Far, Far Galaxy and the Master Chief's Home Galaxy. WARNING: CONTAINS A LOT OF ORIGINAL CHARACTERS!
Crossover - Star Wars & Halo - Rated: T - English - Adventure - Chapters: 3 - Words: 2,618 - Reviews: 1 - Favs: 7 - Follows: 9 - Updated: 9/25 - Published: 9/12
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/Adventure - Chapters: 2 - Words: 10,013 - Reviews: 18 - Favs: 76 - Follows: 129 - Updated: 9/25 - Published: 9/20 - Samus A., Master Chief/John-117
A New Path by GeorgeQuartz reviews
Year 2560, the UNSC Infinity and what is left of her crew is fighting for its life against countless Banished Invaders. Deep inside the ship, two pilots and friends have to fight their way through it all to their Longsword Interceptor. A one-in-a-million chance incident with a Forerunner Artefact brings them to a different fight with a different enemy, just trying to get back home.
Crossover - Halo & Star Wars Rebels - Rated: T - English - Sci-Fi - Chapters: 3 - Words: 26,882 - Reviews: 14 - Favs: 43 - Follows: 53 - Updated: 9/24 - Published: 9/6 - T. Lasky, OC, Ezra B., Sabine W.
The Reclaimer of Mandalore by UNSC indomitable reviews
Having been awoken by his faithful companion. The Master Chief and Cortana find themselves in an unknown galaxy. Knowing the only way to survive is to remain under the radar. But in a galaxy gripped by war, such a thing was never going to be easy. As the Chief try's to up hold the status quo in the ever changing world of Mandalore, as the galaxy slowly torn apart around them.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi - Chapters: 10 - Words: 63,566 - Reviews: 271 - Favs: 741 - Follows: 1,055 - Updated: 9/23 - Published: 11/25/2020 - OC, Master Chief/John-117, Cortana
The Guiding Fire by UNSC indomitable reviews
A Commander striped of authority. The world divide and falling. Last fading light. Hope lays in Spirit and might. As those with the fire lay dying. All must stand fast in the face howling night.
Crossover - Halo & Azur Lane/碧蓝航线 - Rated: T - English - Sci-Fi/Adventure - Chapters: 10 - Words: 70,192 - Reviews: 69 - Favs: 151 - Follows: 217 - Updated: 9/23 - Published: 7/22/2020 - J. Cutter, Belfast, OC
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: 3 - Words: 19,382 - Reviews: 79 - Favs: 138 - Follows: 149 - Updated: 9/23 - Published: 8/18 - Clark K./Superman, Lex L., SPARTAN-B312/Noble Six
The Brighter the Light The Darker the Shadow by Cypher1597 reviews
Dovahkiin and Shadow Walker. The first is a beacon that shines through the darkness, embodying the ancient heroes that vanquished the Dragon Lords of old. The latter is an inexhaustible shadow that will strike down all who stand in its way. A shadow that is neither wicked nor virtuous. The fate of all Tamriel hangs in the balance. For where there is light there is shadow...
Crossover - Halo & Elder Scroll series - Rated: M - English - Adventure/Supernatural - Chapters: 4 - Words: 18,516 - Reviews: 32 - Favs: 128 - Follows: 170 - Updated: 9/22 - Published: 3/2 - OC, Dragonborn/Dovahkiin, Serana
Semper Vigiles by Cypher1597 reviews
Headhunter, a program propagated by the Office of Naval Intelligence. After a final act of defiance against the Covenant, a Headhunter must find his place in a city ruled by corporate greed, bloodthirsty mercenaries, and roaming bands of vicious scavengers. It is the perfect hunting ground for one of ONI's most accomplished killers. Semper Vigiles - Always Vigilant.
Crossover - Halo & Cyberpunk 2077 - Rated: M - English - Adventure - Chapters: 61 - Words: 420,909 - Reviews: 725 - Favs: 1,002 - Follows: 1,184 - Updated: 9/22 - Published: 12/20/2020 - OC, V, Panam P.
Only In Death Does Duty End by Cypher1597 reviews
Spartans are the protectors of humanity. Headhunters are the sword of humanity. Both are required to fight for their species unto their dying breath. However, when death finally comes is that duty maintained? Does it continue as long as the mind can remember it? Regardless of the answer, a Headhunter must find a way to continue his duties. Even if he is no longer human.
Crossover - Halo & High School DxD/ハイスクールD×D - Rated: M - English - Suspense - Chapters: 25 - Words: 151,537 - Reviews: 356 - Favs: 738 - Follows: 960 - Updated: 9/22 - Published: 6/29/2021 - OC
For All Mankind by Cypher1597 reviews
Raava is the spirit of light and peace. Vaatu is the harbinger of darkness and chaos. Their war has left this planet scarred and the Avatar cannot be expected to stand against the darkness alone. An agent of order is needed to tip the scales and Raava has found her herald amongst the stars. A hunter that walks the shadows in service to the light. The world will never be the same.
Crossover - Halo & Legend of Korra - Rated: M - English - Suspense - Chapters: 4 - Words: 18,906 - Reviews: 37 - Favs: 121 - Follows: 162 - Updated: 9/22 - Published: 6/3 - OC, Korra
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: 17 - Words: 147,846 - Reviews: 301 - Favs: 401 - Follows: 591 - Updated: 9/22 - Published: 4/21 - [Master Chief/John-117, Tali'Zorah] J. Cutter
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: 4 - Words: 13,806 - Reviews: 4 - Favs: 8 - Follows: 15 - Updated: 9/22 - Published: 8/14 - [Master Chief/John-117, Cortana] [Fred-104, Kelly-087]
BattleTech: Combat Evolved by IX404 reviews
While fleeing from the Inner Sphere following the Amaris Coup, the Exodus Fleet discovers an object out in the inky blackness of space. Little does General Kerensky or his sons know is that they will soon be within the center of a conflict that will decide the fate of Humanity and place the Star League-in-Exile at the forefront of the conflict.
Crossover - Mechwarrior/Battletech & Halo - Rated: T - English - Sci-Fi/Drama - Chapters: 12 - Words: 58,881 - Reviews: 161 - Favs: 110 - Follows: 112 - Updated: 9/22 - Published: 8/25 - Master Chief/John-117, A. J. Johnson, Arbiter, 343 Guilty Spark
Penumbra: Black Plague by Ginopippofreebooter reviews
A pen, a notebook and some time alone. That is all that the Young Wolf Jake needed and unlike his Titan comrades, he liked to report new findings and informations on it. So, what happens when a Taken anomaly guides him to a seemingly giant ring in the middle of space? (Set from the start of Halo 1 to 3.) (Cover by Abrax1245/Ikarus Prime, follow him on Reddit).
Crossover - Halo & Destiny - Rated: T - English - Sci-Fi/Adventure - Chapters: 18 - Words: 57,976 - Reviews: 100 - Favs: 158 - Follows: 223 - Updated: 9/22 - Published: 6/26/2021 - Master Chief/John-117, Cortana, Ghost, Guardian
Star Wars x Halo: Forgotten Forerunner by Nightmarcher808 reviews
What if the Didact was not the only Forerunner still alive during Halo 4? What if this Forerunner awoke just after Cortana gained control over the guardians? Finally, what if this Forerunner fled from a Guardian to unexpectedly slip space into the star wars universe? Join Braga of Silence and Power as he helps the republic to true unity. OC x Ahsoka. Rated M for safety.
Crossover - Halo & Star Wars: The Clone Wars - Rated: M - English - Adventure/Romance - Chapters: 29 - Words: 177,081 - Reviews: 100 - Favs: 340 - Follows: 364 - Updated: 9/21 - Published: 5/18/2018 - OC, Ahsoka T.
The Dragon Reclaimer by deeginator2 reviews
Something went wrong when Natsu and Wendy entered the Eclipse Gate. Instead of being sent to the future they were instead sent to another universe. Natsu ended up on Eridanus II while Wendy ended up on Reach. They both became Spartans Natsu became the Master Chief and Wendy became Noble 6. Now thanks to the death of the dark lord they made it back home. This is an AU Natsuxharem.
Crossover - Fairy Tail & Halo - Rated: M - English - Adventure/Fantasy - Chapters: 1 - Words: 4,182 - Reviews: 5 - Favs: 10 - Follows: 16 - Published: 9/20 - [Natsu D., Wendy M., Erza S., Mirajane S.]
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