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Rasputin: Access Granted by Dedotron reviews
The Nine granted him access to the multiverse. A metaphorical key. They told him to use it wisely. He would. He would use it to enter universes. And this one would be a trial.
Crossover - Destiny & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 1,691 - Reviews: 12 - Favs: 19 - Follows: 34 - Updated: 7/6 - Published: 6/22 - Rasputin, 343 Guilty Spark, Master Chief/John-117
Wolves That Walk Alone by TheManThatWalksTheAbyss115 reviews
There's always been growing legends in Remnant. Some of fearless warriors and others of horror, but there's one that's recently been picked up by the inhabitants. A legend of a man who was more akin to a wolf without a pack, barely speaking and doing his deed before leaving without a trace. After all... some people just want isolation rather than company.
Crossover - Halo & RWBY - Rated: M - English - Sci-Fi/Adventure - Chapters: 42 - Words: 340,385 - Reviews: 4375 - Favs: 3,293 - Follows: 3,848 - Updated: 7/5 - Published: 5/8/2019 - SPARTAN-B312/Noble Six, L. Ren, Nora V.
Mass Effect: Galaxy at war by palik reviews
A Citadel Exploration fleet filled with people the council didnt want around discovers something that will change the face of Citadel Space forever. The council will experience a crash course in the fight for survival (Reaper Incursion Arc)
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 28 - Words: 84,353 - Reviews: 515 - Favs: 1,103 - Follows: 1,572 - Updated: 7/5 - Published: 6/18/2020
The Halo Effect: War and Civilization by free man writer reviews
A crossover years in the works. Civilizations rise and fall but to those that do stand, they prosper. They Expand. They reach out across the stars. But of course, such is a Universal law, War is never far behind. War is a language all civilized races speak and it is war most are familiar with. Co-written with BulletStormX. Halo/Mass Effect with a dash of Star Wars.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 13 - Words: 127,353 - Reviews: 355 - Favs: 709 - Follows: 929 - Updated: 7/4 - Published: 7/28/2020
Xen Effect by ThePilotArchangel reviews
Xen is the gateway between universes and dimensions. It is the place where time, space, physics, and other known rules that define ones life go out the metaphorical window. What will happen when a Child of Xen, a perfect Supersoldier, a Guardian of Humanity, and a Spectre of a Council of aliens find themselves caught up in a war of survival? Find out in "Xen Effect".
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 73,718 - Reviews: 37 - Favs: 83 - Follows: 101 - Updated: 7/4 - Published: 4/30 - Master Chief/John-117, Cortana, Shepard, OC
HALO Mass convergence by SapphireDawn11709 reviews
Two Universe collide after the Forerunners fall and the Reapers return, will the two branches of Humanity placed in their respective Systems by a Forerunner Monitor unite or fall, only time will tell in this epic clash. When the UNSC Exploration and Research Vessel Light of Sol discover a strange artifact, they are opened up to the rest of the Galaxy after millennia of isolation.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 24 - Words: 82,670 - Reviews: 311 - Favs: 707 - Follows: 887 - Updated: 7/4 - Published: 9/18/2016 - Master Chief/John-117, Cortana, J. Garson, Tali'Zorah
Agent Reach by One Winged A2 reviews
After the events of Lone Wolf, Noble Six wakes up aboard the Mother of Invention. He is offered a chance from the Director to become an agent of Project Freelancer. He takes it, but will the heart of a frozen warrior need help from another? Cover art is in-game footage.
Crossover - Halo & Red vs. Blue - Rated: M - English - Sci-Fi/Romance - Chapters: 79 - Words: 277,241 - Reviews: 676 - Favs: 876 - Follows: 890 - Updated: 7/3 - Published: 10/8/2014 - [SPARTAN-B312/Noble Six, Tex/Allison] Maine/Meta
True Demon by TyrantChimera reviews
The Gravemind was a thousand billion minds. When Halo wiped out the vast majority of it, a small core, a Keymind, was safely ensconced in its own private pocket of space. Yet They were not alone there. There was a reason that the Gravemind never referred to John-117 as Demon. He could never match up to the horror and power of the real thing... Metroid. Oneshot, spoilers.
Crossover - Metroid & Halo - Rated: K+ - English - Horror/Supernatural - Chapters: 1 - Words: 2,091 - Reviews: 1 - Favs: 6 - Follows: 3 - Published: 7/3 - Samus A., Gravemind - Complete
Mass Effect - Convergence by Fallen2Pancake reviews
During a Batarian Slave Raid on the Systems Alliance Colony of Eden Prime unknown defenders both Human and of unknown alien origin aid in the defense. While the UNSC and XCOM join forces under a thought long dead UNSC Rear Admiral and navigate this new universe, how will the future of Mass Effect change and will it change for the better or worse. - Mass Effect - Halo - XCOM Cross.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 1 - Words: 11,385 - Reviews: 9 - Favs: 62 - Follows: 90 - Published: 7/2 - SPARTAN-B312/Noble Six, OC, Admiral Hackett, Shepard
Halo-Naruto: The Fire Within by Azores reviews
20 years have passed since the Dominion arrived on Shinsei. Now, a young boy, burdened with a curse and having lost everything, embarks on a journey with his mentor to not only to become a shinobi but to also find himself along the way. Meanwhile, in the Dominion, war brews on the horizon as an old enemy rears its head once more. Naruto's story begins here. Sequel to H-N: Prologue.
Crossover - Halo & Naruto - Rated: M - English - Sci-Fi - Chapters: 7 - Words: 76,325 - Reviews: 27 - Favs: 94 - Follows: 95 - Updated: 7/2 - Published: 1/18/2019 - OC, Naruto U., Sakura H., Ino Y.
Digimon War Game by riven-del reviews
AU. Reach has fallen. A Digimon Tamer was lucky to get off planet, but she didn't expect to get ejected into an UNSC ship fleeing the system to go on their own mission. Can she survive this adventure in one piece?
Crossover - Digimon & Halo - Rated: T - English - Adventure/Hurt/Comfort - Chapters: 20 - Words: 21,621 - Reviews: 16 - Favs: 13 - Follows: 17 - Updated: 7/1 - Published: 12/6/2021 - OC, Herissmon, J. Keyes
Operation Unusual Paperwork by kpmh2001 reviews
A side story containing all of the story exerpts, post chapter nonsense, and omakes that the world of The Men From Onyx has to offer, now in one convenient package! Warning: The tone and intention of these short stories will change on a by-chapter basis, tonal consistency is effectively not a consideration.
Crossover - Halo & RWBY - Rated: T - English - Parody/Humor - Chapters: 30 - Words: 103,272 - Reviews: 162 - Favs: 89 - Follows: 95 - Updated: 6/30 - Published: 10/4/2019
A hunter in waiting by TheDinoDude427 reviews
The Lek'golo, a race of worms that work together to shape an individual that had the ability to think as a group. But the lek'golo are not a race found on earth, but it would be quite the coincidence that a case 53 came into the Bay as a group of Lek'golo worms. Let's sit back and watch the chaos. (This is somewhat a self-insert story; you have been warned)
Crossover - Halo & Worm - Rated: M - English - Humor/Sci-Fi - Chapters: 7 - Words: 16,822 - Reviews: 57 - Favs: 201 - Follows: 244 - Updated: 6/28 - Published: 3/9 - OC, Skitter, Dinah A.
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: 22 - Follows: 28 - Published: 6/27 - [Shinei Nouzen, Vladilena Milizé/Lena] Catherine-B320/Kat/Noble Two, Carter-A259/Noble One
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: 136 - Follows: 174 - 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: 288 - Follows: 355 - 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: 67 - 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: 69 - Follows: 95 - Updated: 6/24 - Published: 7/29/2021 - Ellie, Joel
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: 8 - Favs: 43 - Follows: 55 - 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: 233 - Follows: 347 - 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: 178 - Follows: 231 - 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: 78 - Follows: 103 - Updated: 6/17 - Published: 6/3 - OC, Korra
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