Halo Crossovers
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Starting a new faction in the Halo universe with StarCraft Technology by CaptainKriss S5-SIERRA-117 reviews
Jean Razak just a regular normal young adult with a balanced lifestyle between gaming,study and work. Somehow out of nowhere he was transported to another planet with similar environments to earth. He gained power called [SYSTEM] to summon the StarCraft Terran faction unit. Can he survive and return to his original home
Crossover - Halo & StarCraft - Rated: T - English - Sci-Fi/Parody - Chapters: 5 - Words: 15,111 - Reviews: 8 - Favs: 75 - Follows: 88 - Updated: 10/16 - Published: 3/29
Jolt of Metal by Lighting wolf knight reviews
Two breeds of soldiers were bred for war and both with one singular purpose. Rated T for violence, death, and profanity.
Crossover - Halo & Star Wars: The Clone Wars - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 3,082 - Reviews: 2 - Favs: 9 - Follows: 16 - Updated: 10/14 - Published: 6/7/2022 - OC, Grace-093, General Grevious, Clones
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: 94 - Words: 1,102,388 - Reviews: 273 - Favs: 576 - Follows: 625 - Updated: 10/14 - Published: 9/29/2020 - Sole Survivor, Arthur Maxson, Shaun, OC
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: 12 - Words: 80,368 - Reviews: 130 - Favs: 323 - Follows: 400 - Updated: 10/14 - Published: 2/16/2022 - [Samuel-034, Nejire Hado] Mirio T., T. Amajiki
Homeward Bound:The Human-Covenant War by Johnnieboy11 reviews
As the Human-Covenant War rages on in the year 2552, the UNSC gathers the best of its SPARTANs on Reach in a final bid to buy themselves time against the tide of the Alien Hegemony.. In the meanwhile, a Patrol Ship orbiting the outer areas of the Epsilon Eridani system finds an unknown vessel as it floats aimlessly. Aboard it may be the key to saving humanity, second to Chief.
Crossover - Halo & SIGNALIS - Rated: T - English - Angst/Sci-Fi - Chapters: 27 - Words: 131,513 - Reviews: 62 - Favs: 233 - Follows: 282 - Updated: 10/13 - Published: 2/7/2023 - [Elster/LSTR-512, Ariane Yong] Master Chief/John-117, Cortana
HELLDIVERS:The Chance Encounter by Johnnieboy11 reviews
Super Earth is at war! In the Galactic West, the Automatons unleash their socialist horror upon the peoples of Super Earth. In the East, meanwhile, Terminids escaped from their cages bring forth destruction on our Colonies! Though, even amidst these trying times, hope remains! Newfound allies have entered the fight for Managed Democracy! Their name? The United Nations Space Command
Crossover - Helldivers & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 10 - Words: 40,206 - Reviews: 125 - Favs: 321 - Follows: 381 - Updated: 10/12 - Published: 3/2 - Master Chief/John-117, A. J. Johnson, Arbiter, SPARTAN-B312/Noble Six
In Search of Redemption (Halo X Half-Life 2) by yosoyblitzo reviews
Thel 'Vadam, the Inquisitor, is transported to an unfamiliar and hostile world. The Combine are aware of Gordon Freeman's return, but with the addition of this powerful Sangheili warrior, the resistance gains a new hope in their fight against the Universal Union.
Crossover - Half-Life & Halo - Rated: T - English - Sci-Fi/Suspense - Chapters: 1 - Words: 4,524 - Reviews: 2 - Favs: 6 - Follows: 15 - Published: 10/11
No Gods, Nor Masters by Johnnieboy11 reviews
After the pyrrhic victory of the Human-Covenant War, the Covenant was split into many warring factions vying for the power of old. The UNSC was left, bloodied, but as the sole power in the Milky Way for now. After an incredible discovery within a set of Forerunner Ruins, an Exploration Fleet with Doctor Halsey at its head is sent out. What they find will change everything.
Crossover - Halo & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: T - English - Adventure/Sci-Fi - Chapters: 45 - Words: 204,503 - Reviews: 802 - Favs: 1,407 - Follows: 1,670 - Updated: 10/10 - Published: 1/28/2022 - C. Halsey, OC, Itami, Tyuule
Remnants Of The Spartans by ApexRainbow163 reviews
Two Spartans have arrived in Remnant under mysterious circumstances. But the world they've arrived in yields even more mystery than that of their arrival. Join them as they uncover it's secrets, earn some enemies and find allies, new and familiar. (Part 1 of the Yeartide Saga)
Crossover - Halo & RWBY - Rated: T - English - Fantasy/Sci-Fi - Chapters: 19 - Words: 55,106 - Reviews: 18 - Favs: 95 - Follows: 117 - Updated: 10/9 - Published: 6/29/2020 - OC, Team RWBY
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: 25 - Words: 150,146 - Reviews: 532 - Favs: 1,582 - Follows: 2,046 - Updated: 10/6 - Published: 11/25/2020 - OC, Master Chief/John-117, Cortana
Odyssey of the Untrodden by RamPluto reviews
After centuries of relative peace and isolation, the races of Citadel Space have decided to make the bold and historic step of activating a dormant Relay. Unknowing stumblingly into a war that will change the shape of the entire galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 8,806 - Reviews: 46 - Favs: 154 - Follows: 248 - Updated: 10/5 - Published: 10/1 - Master Chief/John-117, Garrus V., Tali'Zorah, Liara T'Soni
The last wall by Lighting wolf knight reviews
The sons of Dorn must fight a war not their own... In a new world. Rated T for violence, death, and profanity.
Crossover - Warhammer & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 2,984 - Reviews: 6 - Favs: 10 - Follows: 13 - Updated: 10/5 - Published: 9/21 - OC, Prophet of Truth, Kelly-087
Halo: Dark Stars-Death Dimension by Ash Maelstrom reviews
AU/FUSION FIC. Part one of a series! 2578. What do Marine stragglers, Sangheili mercenaries, and Banished raiders all have in common? They're about to have a really shitty 25th anniversary of the Great War's end. At the fringes of the battlefield, something is stirred by the rhythm of war and death...or was it already awake and waiting?
Crossover - Halo & Kantai Collection - Rated: T - English - Sci-Fi/Horror - Chapters: 16 - Words: 139,369 - Reviews: 24 - Favs: 21 - Follows: 29 - Updated: 10/4 - Published: 7/4 - Complete
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: 11 - Words: 83,040 - Reviews: 4 - Favs: 16 - Follows: 15 - Updated: 10/3 - Published: 10/21/2023 - OC, OC, Master Chief/John-117, Shepard
Rose Empire Space Command by Apatima reviews
The Beginning of a new Era for the Milky Way Galaxy, with the assistance of the Forerunners and new allies along the way, the Rose Empire will stand tall above all and build a Empire for Peace and Justice to flourish.
Crossover - Halo & RWBY - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 17,516 - Reviews: 2 - Favs: 17 - Follows: 23 - Updated: 10/2 - Published: 7/15 - Master Chief/John-117, J. Cutter, Team RWBY, Team STRQ
Of Latchkeys and Misjumps by Sieben Nightwing reviews
When a second wave SLDF task force from the Amaris Civil War carrying high value passengers suffers a misjump, they end up in orbit over an uncharted planet. Lost and alone, they're hailed by an unknown ship. Circumstances will force them to work together to survive, as the new situation they find themselves in is even worse than the one they came from.
Crossover - Mechwarrior/Battletech & Halo - Rated: M - English - Sci-Fi/Adventure - Chapters: 12 - Words: 64,443 - Reviews: 27 - Favs: 94 - Follows: 133 - Updated: 10/1 - Published: 4/26/2023
Book 1: Wolves (UNDER REWRITE) by Believer218 reviews
The Academy became the home of Spartan training after the loss of Laconia Station. Kept hidden for decades, it has the potential to tip the balance in favor of the UNSC. But secrets lurk beneath the facility, and they are about to be unleashed. Join the Lone Wolves as they embark on an adventure that could change more than one universe. Rated M for graphic depictions of violence.
Crossover - Halo & Avatar: Last Airbender - Rated: M - English - Fantasy/Adventure - Chapters: 1 - Words: 255 - Reviews: 13 - Favs: 14 - Follows: 16 - Updated: 10/1 - Published: 6/27/2023
HALO-STARGATE: All the Stars in the Sky: Book I by Spartan-076A reviews
The UNSC will have to navigate a galaxy poised to rip itself apart between the ambitions of the System Lords and the scheming of the San'Shyuum Hierarchs. Will humanity triumph and rise victorious from these trials, or will it fall by the hands of its enemies? Only time will tell.
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Sci-Fi - Chapters: 2 - Words: 10,761 - Reviews: 8 - Favs: 33 - Follows: 48 - Updated: 10/1 - Published: 8/1 - S. Carter, Gen. Hammond, J. O'Neill, Master Chief/John-117
Halo:Knightstalker by blackcomet1224 reviews
A teenage clone destined for an early death gets a new chance at life when a fugitive Symbiote chooses her as its host in this cross-over fanfiction between Halo and Venom.(Set shortly after Halo legends: homecoming. Art by RKS-Kogiro on twitter/tumblr Commissioned by me. Will be reposted on Royalroad.) Rebooted, old story placed in a separate story to archive.
Crossover - Marvel & Halo - Rated: M - English - Sci-Fi - Chapters: 18 - Words: 89,611 - Reviews: 54 - Favs: 132 - Follows: 130 - Updated: 10/1 - Published: 9/3/2019 - Daisy-023
Knights of Sidonia & Halo Forward unto Dawn Crossover by Coolslick78 reviews
A new day dawns upon a parallel universe. The crew of Sidonia has colonized lem. It continues its journey through space searching for other soler systems but on an advanced mining mission, they discover a mysterious ship suspended inside an enormous ice asteroid. Apon searching the derelict ship they find its named "The UNSC Forward unto Dawn" with one crew onboard.
Crossover - Halo & Knights of Sidonia/シドニアの騎士 - Rated: K - English - Romance/Sci-Fi - Chapters: 5 - Words: 15,571 - Reviews: 6 - Favs: 4 - Follows: 10 - Updated: 9/30 - Published: 8/1 - Tanikaze N., Izana S., Yuhata M.
The Last Metroid by Two Dudes and a Dream reviews
Her Metroid DNA took over, resulting in a monstrous transformation. Unable to control her powers, when escaping ZDR, her ship loses power. 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… Eventual Samus X Master Chief romance.
Crossover - Metroid & Halo - Rated: M - English - Sci-Fi/Drama - Chapters: 48 - Words: 215,557 - Reviews: 471 - Favs: 514 - Follows: 648 - Updated: 9/28 - Published: 9/20/2022 - Samus A., Adam, Master Chief/John-117, Cortana
Bringing the Storm by WalkingTalkingLamborghini reviews
Two Spartans and two Autobots with completely different pasts and seemingly different personalities find they might just be on different sides of the same coin. Fighting the Decepticons and the Covenant instills a bit more camaraderie than one would think. Wildly AU. Halo/Transformers crossover
Crossover - Halo & Transformers - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 2,773 - Reviews: 2 - Favs: 1 - Follows: 3 - Published: 9/28
The Spartan of the Planet of the Apes by Scepter 2-1 actual reviews
It's been years since Noble Six and Auntie Dot found themselves in an alternate Earth being ravaged by a deadly plague. Now, a new threat emerges in the form of evolved and highly intelligent apes. Can Six and Dot ensure mankind's dominance? Or will they fall in the wake of the Ape uprising? Cover image does not belong to me.
Crossover - Planet of the Apes & Halo - Rated: T - English - Adventure/Drama - Chapters: 7 - Words: 27,657 - Reviews: 69 - Favs: 128 - Follows: 155 - Updated: 9/27 - Published: 11/23/2023 - Caesar, SPARTAN-B312/Noble Six
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: 55 - Words: 212,685 - Reviews: 107 - Favs: 298 - Follows: 344 - Updated: 9/23 - Published: 7/15/2023 - Space Marines, OC, Arbiter, Linda-058
The New Hope:The Phoenix Rises by Johnnieboy11 reviews
It is the Dark Age of Axis Victory and the world is rapidly crumpling. In the West, the Organization of Free Nations maintains the last democracies in the world through force of arms, while East of the Atlantic, the Axis's reign of terror over Europe and Asia continues. One unknown contact, however, is set to tip the balance of power forever.
Crossover - Halo & Hearts of Iron - Rated: M - English - Romance/Sci-Fi - Chapters: 4 - Words: 20,308 - Reviews: 19 - Favs: 72 - Follows: 99 - Updated: 9/22 - Published: 9/10 - J. Cutter, E. Anders, Douglas-042, OC
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