Halo Crossovers
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The Spirit of Thessia by NewWorldFiction reviews
For several decades the Spirit of Fire has lumbered through the empty void to find not the UNSC, but something terrible: The destruction of the newly space faring civilization of the Asari by the hands of the Batarian Hegemony, a slaver species. Now, forced into a war that is impossible to win, the crew will face unmountable odds against a enemy that cannot be beat. One-shot.
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 1 - Words: 14,054 - Reviews: 3 - Favs: 12 - Follows: 6 - Published: 4h
Planet Remnant by Sillva
Ruby Rose is a Captain of a deep space scavenging team from a long thought destroyed planet on the outskirts of UNSC territory Known as Remnant. While responding to a UNSC distress beacon Ruby and her crew find way more than they barged for. Will it prove to be their undoing or perhaps have they found the key to their planets survival?
Crossover - Halo & RWBY - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 1 - Words: 3,042 - Favs: 1 - Follows: 1 - Published: 4h
Lone Wolf and the Soldier by LabMember009Isaac reviews
What happen if Noble 6 survive? Noble 6 gets send to the Infinite Stratos world due to slip-space accidents. Find out how he will transition from surviving swarms of fanatical aliens to stampede of girls. AU from ep 8 for Infinite Stratos. Disclaimer: Infinite Stratos or any of its characters does not belong to me.
Crossover - Halo & Infinite Stratos/IS<インフィニット・ストラトス> - Rated: T - English - Chapters: 5 - Words: 10,087 - Reviews: 17 - Favs: 16 - Follows: 22 - Updated: 5h - Published: 7/11
The Cycle by Church -Caboose- Shepard reviews
Fighting off extinction Shepard must find the legacy left to humanity by the Forerunners. And find a way to defeat both the Reapers and the Prophet of Truth from gaining the power to destroy all sentient life in the Galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 28 - Words: 76,227 - Reviews: 115 - Favs: 33 - Follows: 47 - Updated: 15h - Published: 8/29/2012 - Arbiter, Prophet of Truth, Shepard (M), OC
The Joining of Worlds-Part 1: No, I think were just getting started by Jaye Wolf reviews
Cortana and The Master Chief float aimlessly through space. What happens when a foe turned friend tells Cortana about the world they left behind. A Human/Covenant unity called the Systems Alliance, the wonders of their technology, and the discovery of a Prothean Archive on Mars. This new ally also speaks of another group of races under the banner of the Citadel Council.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 22,871 - Reviews: 30 - Favs: 91 - Follows: 134 - Updated: 16h - Published: 7/24 - Master Chief/John-117, Cortana, Shepard (F), Shepard (M)
Halo: Rise of the Empire by theotherpianist reviews
After the end of the Great War the Human race thought it was done with war. They were wrong. When a mission to find two UNSC distress signals is launched, the UNSC suddenly becomes entangled in a war they never wanted to fight, be in, or witness: the dramatic power play that was the Clone Wars. For one Spartan, his legacy and story will begin in a galaxy far, far away.
Crossover - Star Wars & Halo - Rated: T - English - Chapters: 18 - Words: 150,104 - Reviews: 286 - Favs: 242 - Follows: 303 - Updated: 19h - Published: 3/16/2014 - Anakin Skywalker, Obi-Wan K., OC, SPARTAN-B312/Noble Six
The Attack on Reach by De4thknight reviews
The Empire has found Reach and has started to declare war against the UNSC but not just them they will be fighting, they also found a Halo ring and the Covenant army, fighting all three fronts but it won't be long before they bring thee Deathstar into the
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi - Chapters: 3 - Words: 7,128 - Reviews: 3 - Follows: 1 - Updated: 19h - Published: 7/28 - Darth Vader, Master Chief/John-117, Arbiter
Spartans of Death among Angels and Dragons by Tony516 reviews
3 Spartans from 3 generations are sent to an unknown world, stepping into a world of hatred and segregation they find themselves like wolves among dogs. Having shared similar lifestyles with the Norma they wind up aiding in their fight but this goes far beyond the fabrics of reality and something is pulling the strings.
Crossover - Halo & CROSS ANGE Rondo of Angel and Dragon/クロスアンジュ 天使と竜の輪舞 - Rated: T - English - Sci-Fi/Suspense - Chapters: 6 - Words: 32,670 - Reviews: 20 - Favs: 15 - Follows: 28 - Updated: 20h - Published: 5/11 - Carter-A259/Noble One, Ange
Halo: The Elements of Change by Asgardian Dovahkiin reviews
Seven months have passed. The world is recovering and everything seems to be moving forward with an extinct culture being reborn and technological advancement on the turn-up. But all isn't as it seems, join Avatar Korra as she fights insurrection from land and space! Rating is a subject to change (no pun intended).
Crossover - Halo & Legend of Korra - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 10,131 - Reviews: 28 - Favs: 33 - Follows: 23 - Updated: 7/28 - Published: 12/10/2014 - Master Chief/John-117, T. Lasky, Korra, Mako
Never Forget by de4deye117 reviews
A rookie SPARTAN-lV surveyor is assigned by the UNSC and ONI to personally lead an investigation behind the bizarre disappearance and fabled history of a unspoken hero among a world of Pokémon from years ago. His discoveries will lead him to things that only few can even comprehend. (Sequel to Unforgotten)
Crossover - Pokémon & Halo - Rated: K+ - English - Sci-Fi/Mystery - Chapters: 31 - Words: 195,195 - Reviews: 49 - Favs: 10 - Follows: 12 - Updated: 7/28 - Published: 4/14 - Ash K./Satoshi, Arceus, M. Parangosky, OC
Halo Bydo wars by Nemese
UNSC finds something worse that the Covenant and the Flood put togther
Crossover - Game X-overs & Halo - Rated: T - English - Sci-Fi/Horror - Chapters: 1 - Words: 503 - Published: 7/28
Kirito meets the Covenent by Juancabrillio
What happens when kirito and his friends are thrust into the middle of the covenant war? I'm sorry I'm terrible at summarys and this is my first fan fiction hope you enjoy.
Crossover - Halo & Sword Art Online/ソードアート・オンライン - Rated: K+ - English - Adventure - Chapters: 1 - Words: 359 - Published: 7/28
The Covenant of Glass by iLarryyy reviews
After the fall of humanity, the growth of The Covenant's empire was seemingly unstoppable... until it clashed with the boundary of another, more sinister empire. The Darkness' forces are forced to fight on two fronts, and from the shared goal of destroying The Darkness for good, The Light and The Covenant are forced into a shaky alliance of deceit and distrust.
Crossover - Halo & Destiny - Rated: T - English - Sci-Fi/Suspense - Chapters: 4 - Words: 7,572 - Reviews: 5 - Favs: 8 - Follows: 10 - Updated: 7/28 - Published: 7/10
Attack On Titan: The Shift of Tides by Romantic Warrior 1999 reviews
After the Battle of the Ark and the Fall of Wall Maria, the Master Chief crash lands on a strange planet filled with man-eating monsters known as Titans. He will cross paths with Eren Jaeger and his friends. They will unite and the Master Chief shall be thrown into another struggle for Humanity"s survival.
Crossover - Halo & Attack on Titan/進撃の巨人 - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 4,719 - Reviews: 7 - Favs: 16 - Follows: 22 - Updated: 7/27 - Published: 7/14
Sins Never Die by CodenameOne reviews
Impossible odds. That is what the Equestrians have always overcome. With hardship comes happiness, and peace is their goal. They had always worked out differences and problems with other races. But what happens when an alien race comes along and propagates violence and war? And encourages other races to do the same? In their darkest days the Equestrians will have to stand.
Crossover - My Little Pony & Halo - Rated: T - English - Chapters: 29 - Words: 47,490 - Reviews: 58 - Favs: 11 - Follows: 12 - Updated: 7/27 - Published: 11/16/2013 - Twilight Sparkle, Princess Celestia, OC
Halo: Second Contact by Scorp4 reviews
The Citadel never met the Systems Alliance, so when the reapers arrive, the results are much more destructive. Project EXODUS is initiated as a fail-safe if the Reapers defeat the Citadel. How will this change the Galaxy? Who will rise up to the challenge? Will you still read this story even though its summary is bad? First time fanfic, so reviews are much appreciated.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 4 - Words: 13,456 - Reviews: 56 - Favs: 130 - Follows: 180 - Updated: 7/26 - Published: 7/9
Blond Soldier:Beginnings by LittleMech reviews
This is my first attempt at a fanfiction. A soldier of great power has entered the fight for Reach. Naruto, a marine in the UNSC attaining the title of the lone wolf of Harvest, will join Noble Team and take on the covenant (Slow updates from 4/5/2015 until 21/11/2015 due to national examinations. Sorry about this!).
Crossover - Halo & Naruto - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 17,330 - Reviews: 15 - Favs: 72 - Follows: 100 - Updated: 7/26 - Published: 5/4 - SPARTAN-B312/Noble Six, Naruto U., Hinata H.
La vida en otro mundo by gerald caridad reviews
Esta historia se trata de cuatro alicornios que escapan de su planeta, ya que este estaba siendo atacado por una especie alienigena, para buscar un nuevo hogar, para su suerte encuentran un planeta perfecto, pero ¿podrán vivir en paz en un mundo nuevo?, descubranlo. las batallas comienzan desde el capitulo 7.
Crossover - Halo & My Little Pony - Rated: T - Spanish - Fantasy/Hurt/Comfort - Chapters: 14 - Words: 48,808 - Reviews: 3 - Favs: 2 - Follows: 2 - Updated: 7/26 - Published: 12/16/2014
Dawn by NovaTyrant reviews
The Master Chief finds himself stranded on a strange new world filled with odd new allies and deadly new enemies. As he attempts to find a way back home, dark forces begin their quest for utter domination, content with the knowledge that nothing from their world can stop them. Rated T for light swearing, relationships, and mild violence.
Crossover - Halo & League of Legends - Rated: T - English - Adventure/Friendship - Chapters: 47 - Words: 195,103 - Reviews: 243 - Favs: 239 - Follows: 284 - Updated: 7/26 - Published: 7/28/2014 - Master Chief/John-117
Wowbagger's Quest by DrMckay reviews
Join Wowbagger the Infinitely Prolonged, an immortal being who is thoroughly sick of immortality on his glorious quest to fight existential ennui by insulting the Multiverse, one sentient being at a time. Hitchhiker's Guide/Various Sci Fi and Fantasy.
Crossover - Hitchhiker's Guide to the Galaxy & Halo - Rated: T - English - Humor - Chapters: 3 - Words: 5,701 - Reviews: 15 - Favs: 22 - Follows: 10 - Updated: 7/25 - Published: 1/4/2009 - Master Chief/John-117
Effects of a Titan by greeneman42 reviews
A small salvage ship comes across an interesting find while searching. Set before Halo 4 and before ME 2
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 17,236 - Reviews: 59 - Favs: 165 - Follows: 262 - Updated: 7/25 - Published: 11/26/2013 - Master Chief/John-117, Cortana, Shepard (F)
New Beginnings by Xenongaf reviews
The year is 2521, and the Forward Unto Dawn half containing John-117, was hurled into the past. But not the one as he knew it. The insurrectionists were bigger than ever and the Director of Project Freelancer was tasked to eliminate them. Follow Chief as he battles against insurrection's with Project Freelancer.
Crossover - Halo & Red vs. Blue - Rated: T - English - Adventure/Sci-Fi - Chapters: 11 - Words: 16,910 - Reviews: 78 - Favs: 135 - Follows: 169 - Updated: 7/25 - Published: 6/21/2014 - Master Chief/John-117, Director, North, York
Remnants Reclamation by Gohan's Susanoo reviews
Years past since the fight on Requiem, A UNSC task force was sent to find more Forerunner planets and search for any life on them. The task force manage to find life on one Forerunner planet, but what they found could help or destroy all of humanity. Read as team RWBY fight along side a few UNSC soldiers and possibly find more than what they expect. Major AU with pairings and OC's
Crossover - Halo & RWBY - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 3,234 - Reviews: 6 - Favs: 6 - Follows: 7 - Updated: 7/24 - Published: 7/19 - OC, Team RWBY
Falling Skies Mk II by Mediam Noctem reviews
In a future where Humanity is in a constant state of war within and without, heroes constantly arise… and fall. Tens of Billions dead. Hundreds of planets forever tainted by genocidal aliens. Old hatreds arise out of the ashes with the intent of achieving vengeance and at the cost of many. In a future where there is no hope, how will humanity move forward?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 10,155 - Reviews: 25 - Favs: 31 - Follows: 44 - Updated: 7/24 - Published: 7/17 - Shepard (F)
Love vs the Covenent by Agent York FTW reviews
Captain Rex and Ahsoka Tano are in love. But when a man comes to help distroy the covenent the love those two share is in danger. Will Rex and Ahsoka keep their love, or will the covenent distroy all hopes of their love continuing. Rexsoka parring also smaller parings Cody/Barriss, Anakin/Padme, master Chief/Cortana.
Crossover - Halo & Star Wars: The Clone Wars - Rated: T - English - Romance/Sci-Fi - Chapters: 5 - Words: 6,989 - Reviews: 3 - Favs: 5 - Follows: 6 - Updated: 7/24 - Published: 4/25 - [Master Chief/John-117, Cortana] [Ahsoka T., Captain Rex]
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