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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: 27 - Words: 236,000 - Reviews: 197 - Favs: 388 - Follows: 443 - Updated: 12/31/2023 - Published: 11/1/2021 - OC, Vladilena Milizé/Lena, Shinei Nouzen, Theo Rikka
From the Dark by Twisted Fate MK 2 reviews
Nox is falling under the Covenant, and its people are retreating. But some aren't in a place where they can reach help. Alex Masters is one. Her friends slaughtered, and being chased by Jackals, she flees to the only place she knows of - an old shrine from a small, local following her mother had taken her to. There, she finds help - in a form she'd never have thought. (Idea Bunny)
Crossover - Halo & Dark Souls - Rated: M - English - Adventure/Fantasy - Chapters: 4 - Words: 16,122 - Reviews: 38 - Favs: 124 - Follows: 202 - Updated: 1h - Published: 12/11/2022 - Knight
The Adventures of the Lucen: The VykurCorp Conspiracy by General Rage reviews
Liara T'Soni continued her mission to protect the Galaxy while Commander Shepard is in another dimension. She must stop the Covenant and the allies they've gathered from wreaking havoc in a Galaxy without it's greatest hero. While she's had some success, there's a gathering storm on the horizon and one of her crew of misfits will be forced to confront her past before it clears.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 17 - Words: 275,180 - Reviews: 177 - Favs: 140 - Follows: 151 - Updated: 3h - Published: 6/26/2016 - OC, Liara T'Soni, U. Wrex - Complete
The Iron Cross by Lighting wolf knight reviews
Scattered, in a world where their emperor never existed... The Ultramarines have but one purpose... Protect humanity and act among them. Rated T for violence, death, and profanity. Please ignore the latest review. I have blocked that user for insulting words and feelings i do not support.
Crossover - Warhammer & Halo - Rated: T - English - Adventure/Romance - Chapters: 49 - Words: 177,963 - Reviews: 90 - Favs: 220 - Follows: 266 - Updated: 6h - Published: 7/15/2023 - Space Marines, OC, Arbiter, Linda-058
Justice League of Amazons: Halo by Angry lil' elf reviews
In a world where the rogue Amazon Aresia succeeds in her plan to wipe out all men on Earth, she has doomed humanity to extinction and a newly reformed Justice League must try and salvage the world. But hope is not lost and it comes in the form of a Spartan II Commando and his AI from another universe. His name: Master Chief Petty Officer John-117.
Crossover - Halo & Justice League - Rated: M - English - Sci-Fi/Adventure - Chapters: 17 - Words: 93,072 - Reviews: 330 - Favs: 1,119 - Follows: 1,143 - Updated: 13h - Published: 1/13/2016 - Master Chief/John-117, Diana of Themyscira/Wonder Woman, Shiera H./Shayera Hol/Hawkgirl
Welcome to the Jungle by Mark Nutt 2014 reviews
In the wake of Reach's destruction at the hands of the Covenant a new Spartan team, Gold Team, is formed. During their transfer to Nassau Station a freak slipspace anomaly occurs, sending the team through space and time. Crash landing back on Earth, the team finds the human home world no longer under human control. (Unable to upload due to corruption, updated on AO3)
Crossover - Halo & Beastars/ビースターズ - Rated: M - English - Adventure - Chapters: 28 - Words: 91,439 - Reviews: 40 - Favs: 78 - Follows: 86 - Updated: 2/10 - Published: 8/31/2020 - Legosi, Yafya
Roses and Violets by Gashadokur0 reviews
Ever heard of a giant Megacorp falling down from the sky? Neither did Night City. Until a suriving group of UNSC came down with a mishmash of a UNSC Carrier ship. That certainly gave Night City something to talk about for months. (Inspired by both the main Halo series and Red vs Blue)
Crossover - Halo & Cyberpunk 2077 - Rated: T - English - Humor/Sci-Fi - Chapters: 2 - Words: 4,110 - Reviews: 4 - Favs: 22 - Follows: 33 - Updated: 2/10 - Published: 1/26
Stargate:Spartan Siege by Johnnieboy11 reviews
After the battle on Mantle's Approach, the Chief finds himself, alongside a non-rampant Cortana, helping the Humans of a galaxy similar, yet different to his own, battle their enemies, while exploring the countless worlds tied together by a network of ancient portals and uncovering the mysteries surrounding these worlds.
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 11 - Words: 47,134 - Reviews: 162 - Favs: 507 - Follows: 715 - Updated: 2/10 - Published: 12/24/2020 - D. Jackson, J. O'Neill, Teal'c, Master Chief/John-117
The Fifth-Race Reclaimers by Piero217 reviews
The Four Great Races once watched over thousands of worlds… but only one species was destined to inherit their place. Now, as an ancestral enemy rises from the ashes and threatens all life as we know it, humans from two different universes must learn to overcome their differences and stand together to reclaim the Mantle of Responsibility. Set shortly after the events of Spartan Ops
Crossover - Halo & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 27 - Words: 167,306 - Reviews: 276 - Favs: 477 - Follows: 494 - Updated: 2/9 - Published: 6/1/2013 - Master Chief/John-117, C. Halsey, Cortana, John S. - Complete
SGU: Season 3 (Spin-off to The Fifth-Race Reclaimers) by Piero217 reviews
After a three-year long journey through FTL, Young and Rush are awakened by Eli only to receive some very distressing news. But just when all hope seems lost, a group of newcomers comes along who claim to be allied with the SGC—and capable of restoring Destiny. Too good to be true? Only time will tell. (Written in collaboration with AdmiralWhiteFang)
Crossover - Halo & Stargate: Universe - Rated: T - English - Sci-Fi/Drama - Chapters: 4 - Words: 39,883 - Reviews: 23 - Favs: 94 - Follows: 130 - Updated: 2/9 - Published: 9/22/2019 - OC, Eli W., Dr. N. Rush, Col. E. Young
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: 80 - Words: 942,030 - Reviews: 221 - Favs: 471 - Follows: 515 - Updated: 2/9 - Published: 9/29/2020 - Sole Survivor, Arthur Maxson, Shaun, OC
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: 33 - Words: 126,422 - Reviews: 335 - Favs: 489 - Follows: 630 - Updated: 2/9 - Published: 11/29/2022 - Master Chief/John-117, Cortana, Commander, Rapi
Men and Machines by 1DL1NG KN1GHT reviews
Spartan 117 wakes up from the Dawn to a battle of unknown factions. The Separatists outreach with a hand of peace, forever tainting the future of the Clone Wars. But now the Didact’s release approaches and The Chief soon discovers that he is not the only Spartan on this side of the universe. But secretly, Lord Sidious has plans to expand his chessboard to reach this new-found UNSC.
Crossover - Halo & Star Wars: The Clone Wars - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 31,477 - Reviews: 48 - Favs: 115 - Follows: 139 - Updated: 2/8 - Published: 4/12/2023 - Master Chief/John-117, General Grevious, Count Dooku, Jorge-052/Noble Five
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: M - English - Fantasy/Sci-Fi - Chapters: 90 - Words: 464,601 - Reviews: 385 - Favs: 816 - Follows: 957 - Updated: 2/8 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
World Eater by ArmadaScream reviews
Remnant is a land full of dangers. Filled with dark creatures, heartless beasts and vicious evil. Yet even so the world keeps turning and its inhabitants live their day to day life. But now an extraterrestrial plague has found its way onto the planet Remnant, and the Flood is coming.
Crossover - Halo & RWBY - Rated: T - English - Suspense/Adventure - Chapters: 5 - Words: 49,619 - Reviews: 46 - Favs: 54 - Follows: 80 - Updated: 2/7 - Published: 11/19/2023 - Team RWBY, Ozpin, Pyrrha N., Gravemind
War of the Old Ones by Ian the Mechanic reviews
In forgotten ages past, two near eldritch forces vied for the very life essence of the Galaxy. Unknown to the young races, that war is still ongoing. how can the UNSC, the Citadel Council or the Covenant hope to stand against such forces, when they are still embroiled in their own petty squabbling? How could they hope to survive the War of the Old Ones?
Crossover - Mass Effect & Halo - Rated: M - English - Sci-Fi/Horror - Chapters: 28 - Words: 155,737 - Reviews: 173 - Favs: 337 - Follows: 496 - Updated: 2/7 - Published: 2/21/2022
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: 13 - Words: 57,418 - Reviews: 75 - Favs: 405 - Follows: 578 - Updated: 2/7 - Published: 7/7/2016 - SPARTAN-B312/Noble Six
The Remnant Lost Soul of HALO by Vorhard156 reviews
The war between humanity and the Covenant has entered its highest point. Desperate for help to ensure humanity's survival, a group of expedition vessels make a course into the most bizarre place in the galaxy-a place where time and space seemingly all but destroyed. In search of salvation, they find their answer, but that answer is beyond any of their mortal minds to comprehend.
Crossover - Warhammer & Halo - Rated: T - English - Sci-Fi - Chapters: 6 - Words: 19,834 - Reviews: 16 - Favs: 50 - Follows: 65 - Updated: 2/7 - Published: 12/29/2023
Empires Unite! Milky Way by SapphireDawn11709 reviews
When the SGC Destroys the Quantum Mirror after the incident were Doctor Carter and Major Kawasaki appear in Area 51a ripple was sent across the multiverse. When this ripple hit a Forerunner portal chaos ensues as fleets from three universe appear in the Milky Way. Starship Troopers, Mass Effect, Halo Stargate
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Sci-Fi - Chapters: 6 - Words: 24,140 - Reviews: 65 - Favs: 241 - Follows: 300 - Updated: 2/6 - Published: 6/24/2019 - T. Lasky, S. Carter
Spartans Don't Play Games by You will not find me reviews
The Tourney of Harrenhall was the greatest of its kind in Westeros. It was a grand show of the power of house Whent that drew the attention of all seven kingdoms. However, the Westerlands have arrived with strange new allies. Great warriors who bear the sigil of an eagle with arrows and lightning in its claws. Who are these new allies, and what do they mean for Westeros?
Crossover - Halo & Game of Thrones - Rated: T - English - Fantasy/Sci-Fi - Chapters: 55 - Words: 228,433 - Reviews: 1979 - Favs: 1,812 - Follows: 2,162 - Updated: 2/5 - Published: 11/17/2020 - Kurt-051, Lucy-B091, Tom-B292, Tywin L.
Always Be a Good Boy by Anquietas reviews
A Spartan and his A.I. companion will stumble across the Colonies of Kobol just a few days before the Cylon attack. That is where our story will truly begin.
Crossover - Halo & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi/Adventure - Chapters: 11 - Words: 74,676 - Reviews: 67 - Favs: 98 - Follows: 132 - Updated: 2/5 - Published: 12/26/2023 - OC, W. Adama, L. Adama/Apollo, K. Thrace/Starbuck
Redemption by The Ashen One reviews
Six believed his body belonged to Reach after fighting tooth and nail to defend the planet from the Covenant. However, fate has other plans for the spartan as he soon arrives on a strange world, where he encounters a stubborn woman named Korra.
Crossover - Halo & Legend of Korra - Rated: M - English - Adventure/Romance - Chapters: 4 - Words: 13,550 - Reviews: 13 - Favs: 82 - Follows: 126 - Updated: 2/4 - Published: 1/20 - [Korra, SPARTAN-B312/Noble Six]
The Sword of the Geth by Doctor poo and the TURDIS reviews
Dying on Mantle's Approach, Cortana wakes up in an unfamiliar environment. In her drive to get home, she 'employs' the assistance of the local synthetics. She never wanted to be a galactic overlord. But a UNSC AI in an environment woefully unprepared for one of her caliber makes an easy one.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Humor - Chapters: 23 - Words: 123,604 - Reviews: 566 - Favs: 1,087 - Follows: 1,540 - Updated: 2/4 - Published: 11/23/2023 - Cortana, Shepard
The lost sword by Lighting wolf knight
The war with the empire brings in new players... And a new angle. Rated T for violence, death, and profanity.
Crossover - Star Wars & Halo - Rated: T - English - Adventure/Romance - Chapters: 1 - Words: 804 - Favs: 3 - Follows: 4 - Published: 2/3 - Luke S., OC, Arbiter, Atriox
Halo of Remnant by Akyy-Wolf reviews
UNSC Spirit of Fire finds itself above a new planet alone, or maybe not, to fight a new war against a common threat. The Support vessel and its allies will have a hard battle as a common foe discovers them.
Crossover - Halo & RWBY - Rated: M - English - Adventure - Chapters: 3 - Words: 19,426 - Reviews: 11 - Favs: 18 - Follows: 25 - Updated: 2/3 - Published: 1/21 - J. Cutter, OC, Team RWBY
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