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A Black Dagger by Johnnieboy11 reviews
His memories are a mess, his life, reduced to fighting for the UNSC and ONI and his team's mission, doomed from the start. Noble Six's story had always been tragic to anyone who had half a heart while reading his file. To him, it felt normal, like it had happened before. He stalks the battlefields like a Reaper now. And his next mission, remembering, may be his toughest yet...
Crossover - Halo & 86 エイティシックス - Rated: M - English - Angst/Sci-Fi - Chapters: 1 - Words: 4,500 - Reviews: 4 - Favs: 21 - Follows: 26 - Published: 6/27 - [Shinei Nouzen, Vladilena Milizé/Lena] Catherine-B320/Kat/Noble Two, Carter-A259/Noble One
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: 7 - Words: 46,115 - Reviews: 24 - Favs: 120 - Follows: 159 - Updated: 6/26 - Published: 3/2 - SPARTAN-B312/Noble Six, No. 04/Karasuba, No. 10/Uzume, No. 16/Toyotama
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: 4 - Words: 30,790 - Reviews: 69 - Favs: 133 - Follows: 171 - Updated: 6/26 - Published: 4/17 - Clark K./Kal-El/Superman, Master Chief/John-117
Brotherhood of Steel:Chronicles of the 86th UNSC Assault Corps by Johnnieboy11 reviews
A veteran fleet formed of the few survivors of Reach goes missing upon their jump toward Earth. Originally meant to reinforce the Home Fleet with a slew of fresh units, the dozen vessels now find themselves over a foreign world engaged in a familiar war of survival with a rogue army of AI and their own prejudices against each-other. A new world to protect and new challenges await.
Crossover - Halo & 86 エイティシックス - Rated: T - English - Sci-Fi/Adventure - Chapters: 25 - Words: 220,000 - Reviews: 175 - Favs: 286 - Follows: 354 - Updated: 6/25 - Published: 11/1/2021 - OC, Vladilena Milizé/Lena, Shinei Nouzen, Theo Rikka
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: 11,228 - Reviews: 26 - Favs: 66 - Follows: 82 - Updated: 6/25 - Published: 1/4 - Bumblebee, Optimus Prime, Master Chief/John-117, Cortana
Recommissioned by In BRRRRRRT We Trust reviews
Her extraction had failed. As the needles pierced her armor, she thought of her family; her brothers and sisters. It took a long time to see them as more than other conscripts, but she eventually found her way. Laying on the landing platform should have been her end, yet death had other ideas. Opening her eyes to another world, will Daisy - 023 survive this new onslaught?
Crossover - Halo & Last of Us - Rated: M - English - Chapters: 8 - Words: 38,748 - Reviews: 48 - Favs: 68 - Follows: 95 - Updated: 6/24 - Published: 7/29/2021 - Ellie, Joel
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: 60 - Words: 416,122 - Reviews: 702 - Favs: 877 - Follows: 1,032 - Updated: 6/23 - Published: 12/20/2020 - OC, V, Panam P.
Star Wars The Halo Wars by micelzod reviews
Crippled by the Created and with their forces stretched thin. The UNSC must deal with a powerful and ruthless enemy who will stop at nothing to conquer everything in their wake. It is up to the crew of the Spirit of Fire to stop the Banished in a galaxy that is at war. Before the Banished unlock its secrets.
Crossover - Halo & Star Wars: The Clone Wars - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 12,948 - Reviews: 7 - Favs: 42 - Follows: 54 - Updated: 6/22 - Published: 1/3
A Whole New World by Spartan III Commando reviews
Noble six's story did not end on Reach, he escaped the doomed planet after saving the Pillar of Autumn, and he and 117 fought across each Halo, until an incident sent him to a whole new world. And he is wholly unprepared for the journey in store.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 7 - Words: 27,736 - Reviews: 43 - Favs: 232 - Follows: 344 - Updated: 6/21 - Published: 7/7/2016 - SPARTAN-B312/Noble Six
The Guardian of the Elements by ShinyGiratinaA001 reviews
What Happens when a Forerunner Warden that was once a pony that was loved by the two Princesses Celestia and Luna has been in a state of stasis for over a thousand years was awoken by the Mane 6? Will he be able to reconnect with those he loves? (Dead)
Crossover - My Little Pony & Halo - Rated: K - English - Romance/Adventure - Chapters: 7 - Words: 5,891 - Reviews: 2 - Favs: 9 - Follows: 11 - Updated: 6/20 - Published: 11/7/2015 - [OC, Princess Celestia, Princess Luna/Nightmare Moon] - Complete
Twilight Fight for Survival by DarthShadow66
Twilight tries to create another portal but this one backfires. Horribly. How will she get home? Will she Endure?
Crossover - My Little Pony & Halo - Rated: M - English - Adventure/Sci-Fi - Chapters: 5 - Words: 12,118 - Favs: 1 - Follows: 2 - Published: 6/20 - Twilight Sparkle, OC
The Trials by xegil reviews
Arbiter awakes in a strange place, surrounded by both familiar and unfamiliar faces.
Crossover - X-overs & Halo - Rated: T - English - Suspense/Adventure - Chapters: 11 - Words: 86,771 - Reviews: 29 - Favs: 40 - Follows: 51 - Updated: 6/19 - Published: 12/11/2016 - Master Chief/John-117, Arbiter, OC
United Earths Empire: The Beginning of a New Age by Destarien reviews
What if three Universes once separate come together. three different humanities with three different paths of technology merge into one galaxy. Citadel space will never be the same because the Schahl Empire and UNSC are here. Two Civilizations, one at war and one ready for war.
Crossover - Halo & Mass Effect - Rated: T - English - Fantasy/Sci-Fi - Chapters: 6 - Words: 21,260 - Reviews: 60 - Favs: 175 - Follows: 225 - Updated: 6/19 - Published: 5/29 - J. Keyes, J. Cutter, SPARTAN-B312/Noble Six, Jerome-092
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: 2 - Words: 8,768 - Reviews: 21 - Favs: 77 - Follows: 102 - Updated: 6/17 - Published: 6/3 - OC, Korra
The Men From Onyx by kpmh2001 reviews
A UNSC frigate is sent into another dimension after a disaster with their slipspace drive. Now lost in unknown territory, they must attempt to befriend the population of a local planet of strange humans under constant siege from an army of monsters. Consider this a minor AU as there are some slight differences, but everything major is still in the same place.
Crossover - Halo & RWBY - Rated: T - English - Drama/Sci-Fi - Chapters: 86 - Words: 550,920 - Reviews: 1411 - Favs: 1,113 - Follows: 1,345 - Updated: 6/17 - Published: 1/13/2019 - Ruby R., Ozpin, J. Ironwood, Winter S.
A new Beginning by bruscar reviews
What do you do when you wake up in an old ship, in a galaxy far, far away? just survive.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 2,726 - Reviews: 11 - Favs: 38 - Follows: 48 - Updated: 6/16 - Published: 6/11
Heroes Legends Immortal by SixSpartan reviews
They trained 10 years to become the new generation of heroes. Now as villains attcks USJ the SPARTANs reveal themselves to the world.
Crossover - Halo & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Friendship/Adventure - Chapters: 5 - Words: 6,023 - Reviews: 4 - Favs: 35 - Follows: 45 - Updated: 6/15 - Published: 3/27 - C. Halsey, Shouta A./Eraserhead, 1-A Students
Heroes UNITE! by So-Pro Warrior reviews
Commander Shepard and his team have gathered together the races of their Galaxy in an effort to defeat the Reapers. But is it enough? When the team comes across a strange woman they find out that if they are to truly defeat the Reapers once and for all. They will need all the help they can get. But not from their Universe. Multiverse Crossover! Chapters 6-22 Being Rewritten!
Crossover - Mass Effect & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 49 - Words: 1,514,387 - Reviews: 893 - Favs: 405 - Follows: 390 - Updated: 6/14 - Published: 6/21/2013 - Master Chief/John-117, Shepard - Complete
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: 6 - Words: 52,792 - Reviews: 22 - Favs: 88 - Follows: 113 - Updated: 6/14 - Published: 5/3 - OC, Sylphiette, Roxy Migurdia, Eris Boreas Greyrat
My commander is a Spartan? by GeorgeLesnar257 reviews
What happens when one of the most lethal soldiers the UNSC had trained finds himself in a world like he would never imagined, he will face his most difficult mission ever and maybe he will discover that he wants to stay[ CHAPTER 15 IN PROGRESS ]
Crossover - Halo & Azur Lane/碧蓝航线 - Rated: M - English - Hurt/Comfort/Sci-Fi - Chapters: 18 - Words: 59,868 - Reviews: 47 - Favs: 163 - Follows: 181 - Updated: 6/13 - Published: 1/13/2020 - SPARTAN-B312/Noble Six, Enterprise, Bismarck, Arbiter: The Empress III
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: 45 - Words: 644,608 - Reviews: 2329 - Favs: 3,545 - Follows: 4,327 - Updated: 6/11 - Published: 11/30/2015 - Master Chief/John-117, OC, Shepard
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: 8 - Words: 47,259 - Reviews: 225 - Favs: 675 - Follows: 971 - Updated: 6/10 - Published: 11/25/2020 - OC, Master Chief/John-117, Cortana
HALO: Dead Man of the Moon by UH-60 NIGHTSTALKER reviews
When a new yet familiar Enemy threatens Neo-Queen Serenity and her court/friends, an unlikely ally appears and just happens to have a UNSC Warship at his command. But can Serenity's Senshi trust this new armored clad stranger?
Crossover - Halo & Sailor Moon - Rated: T - English - Adventure/Sci-Fi - Chapters: 11 - Words: 34,413 - Reviews: 66 - Favs: 92 - Follows: 102 - Updated: 6/10 - Published: 1/30/2021 - Neo-Queen Serenity, OC
The Great Galactic War by hellothere45 reviews
Occurs after the events of Halo Infinite. Cortina finds out about a new enemy from the void of space called the reapers who are trying to rule the galaxy sending a warning to her former allies and enemies to unite the, she assigns chief espranza and the Weapon on a mission to unite the Citadel species to fight a war to end all wars in the Galaxy, can they do this task
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 4,068 - Reviews: 15 - Favs: 19 - Follows: 28 - Updated: 6/9 - Published: 6/3
Night Raid Watch Halo Legends (COMING BACK SOON) by Crimson Soldat reviews
As the direct continuation of Night Raid plays Halo, Night Raid and Delta are now going to watch multiple stories within the universe of Halo. Follow up from my last fic story, Night Raid Plays Halo. It will have realistic reactions from the cast. Omakes from different characters will be throughout this story. No Multiverse reactions included. Co-written by ExcaliburShooter.
Crossover - Halo & Akame ga Kiru/アカメが斬る - Rated: T - English - Drama/Sci-Fi - Chapters: 10 - Words: 36,359 - Reviews: 54 - Favs: 94 - Follows: 107 - Updated: 6/9 - Published: 1/16/2021
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