Halo Crossovers
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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: 9 - Words: 79,132 - Reviews: 65 - Favs: 131 - Follows: 201 - Updated: 8/27 - Published: 5/12/2023 - Master Chief/John-117, A. J. Johnson, Cortana, Team RWBY
Nier: Great Journey by RamPluto reviews
Finding herself on an unknown ringworld, alone save for her Pod, 2B finds herself thrusted into the middle of an unknown and seemingly intergalactic conflict. With the aid of the Master Chief, 2B will find herself dealing with two worlds, one where Humanity is extinct and the other where war is a constant ever looming threat, to all of mankind and existence itself.
Crossover - Halo & Nier - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 44,674 - Reviews: 97 - Favs: 282 - Follows: 402 - Updated: 8/26 - Published: 2/20 - Master Chief/John-117, 2B, Cortana, 9S
A Lesson in Cautiousness by Wulfess reviews
A woman is unceremoniously given one of the most overpowered abilities in the multiverse. She's also given a choice, succeed or suffer the consequences of failure. Gamer Fic
Crossover - X-overs & Halo - Rated: M - English - Adventure/Horror - Chapters: 22 - Words: 50,859 - Reviews: 13 - Favs: 128 - Follows: 175 - Updated: 8/26 - Published: 2/15/2021 - SPARTAN-B312/Noble Six, OC
Halo:Nightstalker(Archived) by blackcomet1224
The old version of Halo: Knightstalker.
Crossover - Marvel & Halo - Rated: M - English - Adventure - Chapters: 9 - Words: 68,017 - Follows: 2 - Published: 8/26 - Complete
Records From the Void (Halo X Arpeggio) by WO-Class
The Fleet of Fog. Legendary figures, the last of those who bore Shipsouls, vanished into the mists of history, to be forgotten, their service drowned in an endless sea. Until a single facility buried underneath Mars emits a ping that the nascent UNSC traces. Original takes on characters from KanColle and Azur Lane, this story incorporates elements from both and is heavy.
Crossover - Halo & Arpeggio of Blue Steel/蒼き鋼のアルペジオ - Rated: M - English - Sci-Fi/Horror - Chapters: 12 - Words: 40,933 - Favs: 6 - Follows: 8 - Updated: 8/25 - Published: 8/16 - Iona
Halo: Shattered Fate by NightReadings.17 reviews
The Human Order Incineration Incident, the crisis that Chaldea has to resolve in order to restore mankind. Heroes had been summoned in an effort to assist in their endeavor, both from the past, as well as one from the future.
Crossover - Halo & Fate/stay night - Rated: M - English - Adventure/Fantasy - Chapters: 4 - Words: 18,916 - Reviews: 48 - Favs: 135 - Follows: 207 - Updated: 8/25 - Published: 7/26 - Master Chief/John-117, Mashu/Shielder, Ritsuka F.
hero of legends by Red phinex reviews
this is the story of the last legendary clans
Crossover - My Hero Academia/僕のヒーローアカデミア & Halo - Rated: M - English - Romance/Friendship - Chapters: 6 - Words: 6,346 - Reviews: 3 - Favs: 1 - Follows: 2 - Updated: 8/25 - Published: 8/1
Echoes of Tomorrow by A Salty Archer reviews
From the ashes of war, humanity and its echoes—machines wrought in desperation—grapple with the remnants of purpose. As the stars bear witness to their struggle, the lines blur between creator and creation, each seeking salvation in the other's survival. In this crucible, they confront the ultimate question: can the spark of human spirit endure within the steel heart of a machine?
Crossover - Halo & Nier - Rated: M - English - Sci-Fi/Tragedy - Chapters: 4 - Words: 59,598 - Reviews: 40 - Favs: 114 - Follows: 160 - Updated: 8/25 - Published: 8/3 - Master Chief/John-117
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: 93 - Words: 1,092,314 - Reviews: 270 - Favs: 572 - Follows: 622 - Updated: 8/24 - Published: 9/29/2020 - Sole Survivor, Arthur Maxson, Shaun, OC
Folks Need Heroes, Sensei by SSgtLuLZ reviews
"First To Fight" - words the Marine Sergeant Major lived by all his life. With his duty fulfilled to the UNSC, the Corps and humanity itself, he mysteriously finds himself embarking on yet another great journey to save a city tearing itself apart. With the values of courage, honor and discipline; can he bring order to the Academy City of Kivotos?
Crossover - Halo & Blue Archive - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 54,900 - Reviews: 51 - Favs: 259 - Follows: 353 - Updated: 8/24 - Published: 12/25/2023 - A. J. Johnson
Outlaws of the Verse (Unofficial Sequel: The Last Spartan by DinoJake) by Omniva Verse reviews
1000 years after the Reapers were reprogrammed, 3 powers fight for dominance in the galaxy. The Space Forces, Pirates, and of course The Outlaws. (Multi-Xover, AU, Unofficial Sequel): Ship's Crew and Lore, from various other franchises
Crossover - Mass Effect & Halo - Rated: T - English - Sci-Fi/Family - Chapters: 10 - Words: 82,969 - Reviews: 4 - Favs: 15 - Follows: 14 - Updated: 8/28 - Published: 10/21/2023 - OC, OC, Master Chief/John-117, Shepard
Dance With the Devil (2) by ghost company reviews
Vader had it all planned out. Sidious would die. For years he had plotted, conspired, murdered, and forged elaborate lies to get to this point. However, when the Force throws in a new variable, years of planing are called into question. Will the Sith Lord be able to complete his revenge, and who will he be in the end... Anakin or Vader?
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 100,579 - Reviews: 115 - Favs: 305 - Follows: 395 - Updated: 8/23 - Published: 11/21/2018
Battle Group Zeta (MCUHalo Crossover) by Sammy-1000 reviews
An UNSC Fleet arrives in the MCU. How will the Avengers and other Heroes react to a Humanity who doesn't take any shit from the Aliens. Read and Find out! Read Full Summary in the First Page. Since Fanfiction doesn't allow much words. Warning:- Blood and Violence.
Crossover - Halo & Avengers - Rated: M - English - Sci-Fi/Adventure - Chapters: 4 - Words: 18,559 - Reviews: 24 - Favs: 104 - Follows: 136 - Updated: 8/23 - Published: 6/8 - J. Cutter, Iron Man/Tony S., Pepper P., Captain America/Steve R.
Mass Effect: EXT SIGMA by IceFoxie reviews
The UNSC Infinity and her fleet escape the Didact's final bid to stop humanity from claiming the Mantle. By using the EXT SIGMA protocol, the fleet finds itself in uncharted space. Humans don't exist in this Mass Effect. How will the natives react to the UNSC refugees?
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Drama - Chapters: 9 - Words: 42,791 - Reviews: 50 - Favs: 190 - Follows: 259 - Updated: 8/22 - Published: 7/28
The Song of Infinity by Johnnieboy11 reviews
As the battle of Christophsis is ongoing, a new faction emerges over the crystalline battlefield. Confusion, worry and fear permeate the Republic lines until a first shot is fired in anger by the Confederacy. A change stirs in the Force, the Reclaimers are awakening and the Galaxy at large is powerless to stop them.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 32 - Words: 131,650 - Reviews: 230 - Favs: 820 - Follows: 1,021 - Updated: 8/20 - Published: 3/23/2023 - Anakin Skywalker, Ahsoka T., Master Chief/John-117, T. Lasky
War of the Hearts by World Archivist reviews
The Human-Covenant war had left an undeniable scar on the galaxy. Now in the year 2553, a new enemy shall appear, and a new war shall begin, one with origins in a time before the Halo Array.
Crossover - Halo & Kingdom Hearts - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 4,918 - Reviews: 2 - Favs: 6 - Follows: 9 - Updated: 8/19 - Published: 4/19
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: 26 - Words: 75,620 - Reviews: 123 - Favs: 149 - Follows: 172 - Updated: 8/18 - Published: 1/30/2021 - Neo-Queen Serenity, OC
A Better Tomorrow by DLTA-BOT reviews
How can one man change a world ravaged by corruption, war, and poverty? And if that world isn't his own, why would he want to? In a life built out of discontent and fear, maybe the opportunity for change lies in a new place and a fresh start. A new beginning. And, maybe, he can look forward to a better tomorrow. - A companion story to Wrong Place, Right Time: A Hero's Story.
Crossover - Halo & Cyberpunk 2077 - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 56,528 - Reviews: 30 - Favs: 176 - Follows: 212 - Updated: 8/18 - Published: 4/16 - OC, V, Johnny Silverhand, Rogue A.
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: 32 - Words: 213,084 - Reviews: 258 - Favs: 533 - Follows: 606 - Updated: 8/18 - Published: 4/17/2022 - Clark K./Kal-El/Superman, Master Chief/John-117 - Complete
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: 28 - Words: 100,769 - Reviews: 189 - Favs: 610 - Follows: 899 - Updated: 8/18 - Published: 7/8/2022 - Rookie, Shepard
Forward Unto Dawn by TheWizardofOzbourne reviews
Triple Crossover, TSCC/Halo w/Star Trek: Voy/DS9/TNG elements. Trapped in a universe similar to our own, Cameron and John Henry struggle to return home. To do so, three gifts, each from another universe, will get them home and entangle them in a war they thought they knew. Eventual Jameron and MC/Cortana. Updated! 08/14/2024 CH52 Posted!
Crossover - Terminator: Sarah Connor Chronicles & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 52 - Words: 412,770 - Reviews: 622 - Favs: 291 - Follows: 353 - Updated: 8/14 - Published: 3/26/2013 - [John C., Cameron] [Cortana, Master Chief/John-117]
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: 14 - Words: 156,355 - Reviews: 174 - Favs: 505 - Follows: 649 - Updated: 8/14 - Published: 3/2/2022 - SPARTAN-B312/Noble Six, No. 12/Hibiki, No. 11/Hikari, No. 16/Toyotama
Halos, Bullets and Buckshot:The Human-Covenant War by Johnnieboy11 reviews
After discovering a strange artifact in the abandoned Abydos Desert, the girls of the Foreclosure Task Force mistakenly activate it, sending themselves to a new and alien reality, one where humanity is in the brink as an Alien Armada bears down upon her worlds and death looms ever so close to them. Their hope for survival now rests on their own skill, a little luck... And the Halos
Crossover - Halo & Blue Archive - Rated: M - English - Sci-Fi/Horror - Chapters: 4 - Words: 16,613 - Reviews: 17 - Favs: 102 - Follows: 131 - Updated: 8/14 - Published: 2/15 - Master Chief/John-117, A. J. Johnson, SPARTAN-B312/Noble Six, OC
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: 23 - Words: 183,890 - Reviews: 806 - Favs: 1,090 - Follows: 1,199 - Updated: 8/13 - Published: 10/5/2021 - [SPARTAN-B312/Noble Six, Amy S, Rosa D.]
Halo Effect by kamilospl1312 reviews
What if UNSC replace System Allience from Mass Effect
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 2,001 - Reviews: 19 - Favs: 37 - Follows: 65 - Published: 8/12
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