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Halo: From Spartan to Seran by CommanderAuri reviews
What was originally set to be a smash and grab mission goes completely sideways. A haphazard escape through teleporter on the shield world Requiem's surface sends Spartan Commander Rachel Auri flying head over heels onto foreign soil with hostile contacts right on her tail. Follow her story as she tries to survive a planet that is constantly attempting to kill off it inhabitants.
Crossover - Halo & Gears of War - Rated: K - English - Sci-Fi/Adventure - Chapters: 1 - Words: 6,807 - Reviews: 1 - Favs: 3 - Follows: 3 - Published: 9h - Marcus F., Dominic S., A. Cole, D. Baird
The Demon Of The Nine-Nine by SSJ Lone Wolf reviews
It had been ten years since Noble Six joined the NYPD, following the fall of Reach, quickly moving through the ranks and making detective, but when he is transferred to the 99th precinct he finds his life flipped upside down when he had to work alongside the eccentric squad of the Nine-Nine. If his own past doesn't drive him insane...they certainly will!
Crossover - Halo & Brooklyn Nine-Nine - Rated: M - English - Chapters: 13 - Words: 88,690 - Reviews: 368 - Favs: 583 - Follows: 646 - Updated: 23h - Published: 10/5/2021 - SPARTAN-B312/Noble Six, Jake P., Amy S, Rosa D.
Evidence of Glory by Cat-Plant
In a world filled with peril, and uncertainty, either defeat or victory remains. Join Josi Vadam and his compatriots in a world rife with action and adventure as he discovers the truth of his world and his life in the Covenant and beyond! (what if the covenant and other beings in Halo had stands)(Part 7 Universe)(OC)(Alternative Arbiter)
Crossover - Halo & JoJo's Bizarre Adventure - Rated: M - English - Sci-Fi/Supernatural - Chapters: 7 - Words: 10,669 - Favs: 1 - Follows: 2 - Updated: 11/8 - Published: 10/4 - Arbiter, Rtas 'Vadumee
The Spartan Hero by SilverExcel115 reviews
The mission's changed, they always do. Sam wasn't expecting entering another world with no possible way back, but his missions objectives remain the same, "Protect humanity, no matter the cost." At the same time, he will be forced to come to terms with his new home and learn what it means to be a hero in this new world. At least he doesn't have to do it alone. Sam and Big 3, C-2A
Crossover - Halo & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Sci-Fi/Drama - Chapters: 6 - Words: 40,572 - Reviews: 47 - Favs: 159 - Follows: 212 - Updated: 11/7 - Published: 2/16 - [Samuel-034, Nejire Hado] Mirio T., T. Amajiki
Covered In Black Ink by ClassicSix reviews
The official report says Noble Six had gone missing in action after the battle on Reach. However the unofficial report? Being recovered by the Office of Naval Intelligence B-312 is reassigned as the most dangerous asset the Office as to offer. His mission, to cover up an experimental Project previously funded by ONI. But what other secrets are hidden underneath all this black ink?
Crossover - Halo & Red vs. Blue - Rated: T - English - Adventure/Drama - Chapters: 8 - Words: 57,015 - Reviews: 59 - Favs: 222 - Follows: 276 - Updated: 11/7 - Published: 12/17/2019 - SPARTAN-B312/Noble Six, Carolina, Tex/Allison, Wash
Sins of a Galactic Empire: Bounty Hunter by zzzxxc1 reviews
Retiring from bounty hunting and returning to Mandalore after the Battle of Geonosis to fight the resurgent Death Watch, Jango Fett once again leads the True Mandalorians in battle as Mand'alor.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 3,062 - Reviews: 22 - Favs: 82 - Follows: 99 - Updated: 11/6 - Published: 7/8/2020 - Boba Fett, Jango Fett, Duchess Satine Kryze
The Spartan's Wrath by SpartanPrime101 reviews
I have been called many things since I first arrived in this universe. The locals call me a hero. That boy scout, Superman, calls me a mindless killer. The Amazon…a necessary evil. Gotham's Batman…a murderer. I'm all that, and much more…I'm a Spartan. OC Spartan. Rated M for Mature Themes. Please Read and Review.
Crossover - Halo & Justice League - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 9,879 - Reviews: 22 - Favs: 77 - Follows: 117 - Updated: 11/6 - Published: 10/31 - OC, Diana of Themyscira/Wonder Woman, Barbara Gordon/Batgirl/Oracle
Iron Eyes by Xyphrose reviews
It was surprising, ending up here in this world, with a father and a mother that I wouldn't lose the Covenant, but I wasn't going to mess this up. Who I was doesn't matter anymore. What matters is who I am now. My name is Rudeus Greyrat, and I, am a spartan.
Crossover - Halo & Mushoku Tensei/ 無職転生 - Rated: M - English - Adventure/Fantasy - Chapters: 7 - Words: 59,550 - Reviews: 35 - Favs: 114 - Follows: 152 - Updated: 11/6 - Published: 5/3 - OC, Sylphiette, Roxy Migurdia, Eris Boreas Greyrat
Star Wars: Odyssey of the Infinity by IX404 reviews
During a routine safety test, the Slipstream Space Drive of the Infinity malfunctions, catapulting them into unknown space. Little do Lasky and the members of the Infinity know is that they will soon change the fate of a far away galaxy.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Drama - Chapters: 5 - Words: 61,230 - Reviews: 128 - Favs: 308 - Follows: 389 - Updated: 11/5 - Published: 10/11 - Luke S., Han S., Master Chief/John-117, T. Lasky
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: 22 - Words: 74,442 - Reviews: 120 - Favs: 185 - Follows: 251 - Updated: 11/5 - Published: 6/26/2021 - Master Chief/John-117, Cortana, Ghost, Guardian
Remnants of a Spartan: Rewrite by playererror404 reviews
Spartans never die, B312 Noble Six knows this better then most. After her last stand on Reach she woke up lost on another world that has no knowledge of the Covenant or the UNSC. Stranded with few resources on the world of Remnant she'll have to form a new team, grieve her old one and try desperately not to lose her god damn mind over this crazy planet while trying to save it from
Crossover - Halo & RWBY - Rated: T - English - Adventure/Humor - Chapters: 19 - Words: 69,995 - Reviews: 59 - Favs: 283 - Follows: 373 - Updated: 11/4 - Published: 3/3 - [Coco A., Velvet S.] SPARTAN-B312/Noble Six, Team CFVY
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: 57 - Words: 657,478 - Reviews: 168 - Favs: 322 - Follows: 353 - Updated: 11/4 - Published: 9/29/2020 - Sole Survivor, Arthur Maxson, Shaun, OC
The Mercenaries of The UNSC by lupiniiiredawesome reviews
A/N: The Red Mercenaries we're having your off day with engineer and medic we're coming up with a project for interdimensional teleporter that can take them, anywhere however when that woman did worked they got them so stranded in another world that was the future itself however for the red mercenaries of TF2 cuz this is going to their ultimate Adventure.
Crossover - Halo & Team Fortress 2 - Rated: T - English - Adventure/Sci-Fi - Chapters: 6 - Words: 14,283 - Reviews: 3 - Favs: 6 - Follows: 9 - Updated: 11/3 - Published: 9/12
Light of Dawn by Applebringer reviews
Lordaeron is in ruins. Humanity under attack from seemingly everywhere. Alexandros Mograine, Highlord of the Silver Hand, sets out to find his son in Stratholme, unknowingly walking into a trap. In another reality, the Master Chief battles the Harbinger, fleeing into a portal, it transports him to a strange new place. To a world filled with darkness, can he bring the light?
Crossover - Warcraft & Halo - Rated: M - English - Fantasy - Chapters: 1 - Words: 2,363 - Reviews: 5 - Favs: 11 - Follows: 16 - Published: 11/2 - Alexandros Mograine, Master Chief/John-117
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: 17 - Words: 87,003 - Reviews: 236 - Favs: 157 - Follows: 162 - Updated: 11/2 - Published: 8/25 - Master Chief/John-117, A. J. Johnson, Arbiter, 343 Guilty Spark
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: 58 - Words: 267,355 - Reviews: 114 - Favs: 449 - Follows: 541 - Updated: 11/2 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
Overruling Covenant (UP FOR ADOPTION) by Anime0CC0Manga reviews
All Of Nazarick Ends Up In The Halo Universe (I Own Nothing)
Crossover - Overlord/オーバーロード & Halo - Rated: K - English - Adventure/Sci-Fi - Chapters: 2 - Words: 1,926 - Reviews: 15 - Favs: 35 - Follows: 57 - Updated: 11/2 - Published: 8/2 - Ainz, Albedo, Demiurge, Arbiter
Legacy of the Precursors (Revised Edition) by DrakeTheTraveller reviews
A legacy is what man leaves behind, the culmination of past deeds laid down at his feet for those who come after. Noble Six walks in the footsteps of his predecessors, peerless warriors and tacticians. As a spartan, war is his birthright. As a man he has nothing to call his own, no legacy to his name. But after Reach's fall, he discovers just what inheritance he will leave behind.
Crossover - Star Fox & Halo - Rated: M - English - Drama/Adventure - Chapters: 14 - Words: 137,524 - Reviews: 262 - Favs: 394 - Follows: 481 - Updated: 10/31 - Published: 3/10/2019 - Fox M., Krystal, Miyu, SPARTAN-B312/Noble Six
Mass Emile by Ranschaj reviews
Emile survives the two zealots at the end of Reach, and after surviving Covenant onslaught, finds himself in the ME universe. Kick-ass picture is thanks to freejimmy on deviantart
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 11 - Words: 88,211 - Reviews: 873 - Favs: 1,093 - Follows: 1,319 - Updated: 10/30 - Published: 12/11/2012 - Emile-A239/Noble Four
Enduring the Flames of War by Masterdude21 reviews
A joint Asari-Turian operation salvaged a "package" from a derelict wreckage in the Terminus Systems, whereupon they release a force of war beyond their reckoning. Hoping to avoid another war, Commander Shepard recruits the "package" into her team. A simple act of kindness, unwittingly paving the way for a clash unlike the galaxy has ever seen. Fate directs the flames of war.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Horror - Chapters: 47 - Words: 686,011 - Reviews: 2436 - Favs: 3,660 - Follows: 4,464 - Updated: 10/28 - Published: 11/30/2015 - Master Chief/John-117, OC, Shepard
Daily war with monster girls by Masterdude21 reviews
With the help of the highly-motivated extra-species in the military, mankind holds their own against the brutal onslaught of the Covenant. In their haste to close the gap in space warfare, ONI stumbles upon Relay 314. Even as new enemies arise, the galaxy constantly thwarts Cortana's schemes to build the Master Chief the ultimate harem. Halo/Mass Effect/Monster Musume crossover.
Crossover - Halo & Mass Effect - Rated: M - English - Humor/Romance - Chapters: 28 - Words: 383,980 - Reviews: 1068 - Favs: 2,051 - Follows: 2,329 - Updated: 10/28 - Published: 9/20/2016 - Master Chief/John-117, Cortana, Shepard
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: 8 - Words: 64,022 - Reviews: 110 - Favs: 230 - Follows: 290 - Updated: 10/28 - Published: 4/17 - Clark K./Kal-El/Superman, Master Chief/John-117
Halo Galactic Wars by Crimson Soldat reviews
While on a search mission within Zeta Halo, Master Chief and his new AI Companion stumbles upon an unknown site that isn't Forerunner in origins. Next thing they knew, both ends up in another Galaxy and are forced to partake in a war that they had found themselves in. With them and a few surprises, the known universe will never be the same ever again. Co-written by jojobinks01.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 42,091 - Reviews: 70 - Favs: 239 - Follows: 300 - Updated: 10/26 - Published: 6/30 - Anakin Skywalker, Obi-Wan K., Ahsoka T., Master Chief/John-117
The Tale of The Spacefarers: Under Azur Skies by TaleBearer42Day reviews
When the Spartan team known as the Spacefarers (along with their crew of The Bulwark) are pulled from Reach into a world not their own, they must try to return. All while loving ship-girls and fighting Sirens, of course. Things are sure to be fun!
Crossover - Halo & Azur Lane/碧蓝航线 - Rated: K+ - English - Romance/Sci-Fi - Chapters: 11 - Words: 21,511 - Reviews: 13 - Favs: 28 - Follows: 33 - Updated: 10/26 - Published: 2/28 - OC, Kaga, Illustrious
The Bringers of Dawn by Zannerson reviews
Once, a star fell near the island of the Torrentine river's, Empowering the house of Dayne with the Sword of the Morning. Now another one has come, and it will bring more than just Steel and Power. The line of Dayne will enter a world greater than they ever knew.
Crossover - Halo & A song of Ice and Fire - Rated: M - English - Fantasy/Sci-Fi - Chapters: 9 - Words: 148,461 - Reviews: 32 - Favs: 121 - Follows: 177 - Updated: 10/25 - Published: 2/15
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