Halo Crossovers
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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: 27 - Words: 111,980 - Reviews: 199 - Favs: 710 - Follows: 886 - Updated: 3/21 - Published: 3/23/2023 - Anakin Skywalker, Ahsoka T., Master Chief/John-117, T. Lasky
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: 92 - Words: 485,712 - Reviews: 403 - Favs: 851 - Follows: 997 - Updated: 3/21 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
Halo: Operation Christ Sake by The Drabble Drafter reviews
Based off of "The Eagle and the Dove" by XENMEGALOGOS, mankind had been fighting a losing war with the Covenant. In one universe, mankind discovered the Halo arrays and brought the 27 year genocide to an end. In another universe, however, mankind discovered another galaxy and thus another mankind.
Crossover - Halo & Stellaris - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 11,669 - Reviews: 5 - Favs: 23 - Follows: 26 - Updated: 3/20 - Published: 3/6 - J. Keyes, Cortana, OC
A Spartan out of reach by unnaturalguy reviews
Noble 6 thought this was the end...he was sure it was but now he found himself in a strange land...with nothing else to do he explores. follow noble 6 as he explores Skyrim and make new allies and face new dangers.
Crossover - Elder Scroll series & Halo - Rated: M - English - Sci-Fi/Fantasy - Chapters: 2 - Words: 4,989 - Reviews: 7 - Favs: 14 - Follows: 21 - Updated: 3/20 - Published: 2/11
Mass Effect: Forward Unto Dawn by WildcatWarrior67 reviews
Spartans never die. They're just missing in action. At least, that's how the saying goes. But for the Master Chief and Cortana, they're no longer missing. Awaking in a different universe, the two of them will uphold their oath: to protect Earth and all her colonies. Only it won't be from the Covenant this time.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 10,714 - Reviews: 46 - Favs: 217 - Follows: 384 - Updated: 3/20 - Published: 11/26/2022 - Master Chief/John-117, Cortana, Shepard
Post Traumatic War Machines by The Shadowscythe reviews
The Spirit of Fire drifted for years after the destruction of the unknown forerunner shield world with it's digital angel clinging to life. The Battlestar Galactica has sent it's Raptor Compliment in search of precious water after it's holds had been sabotaged by a Cylon agent. Unseen hands have created an impossible meeting and now stars will tremble before humanities creations.
Crossover - Halo & Battlestar Galactica: 2003 - Rated: M - English - Sci-Fi/Drama - Chapters: 4 - Words: 14,092 - Reviews: 79 - Favs: 227 - Follows: 348 - Updated: 3/20 - Published: 10/25/2023 - J. Cutter, E. Anders, Serina, W. Adama
Night Raid Watch Halo Legends by Crimson Soldat reviews
As the direct continuation of Night Raid plays Halo, Night Raid and Delta are now going to watch multiple stories within the universe of Halo. Follow up from my last fic story, Night Raid Plays Halo. It will have realistic reactions from the cast. Omakes from different characters will be throughout this story. No Multiverse reactions included. Co-written by ExcaliburShooter.
Crossover - Halo & Akame ga Kiru/アカメが斬る - Rated: T - English - Drama/Sci-Fi - Chapters: 13 - Words: 39,104 - Reviews: 67 - Favs: 132 - Follows: 139 - Updated: 3/20 - Published: 1/16/2021
BattleTech: Combat Evolved - Definitive Edition by IX404 reviews
We all know the tale. The SLDF under Aleksandr Kerensky's command leaves the Inner Sphere forever, before evolving into the Clans following Operation KLONDIKE. What if this was not the case? What if the entire Exodus fleet suffered a misjump that propelled them into another universe, one where Humanity will reclaim an ancient inheritance? This is the story of that possibility.
Crossover - Mechwarrior/Battletech & Halo - Rated: T - English - Sci-Fi/Drama - Chapters: 11 - Words: 85,492 - Reviews: 86 - Favs: 187 - Follows: 234 - Updated: 3/19 - Published: 8/24/2023 - Master Chief/John-117, Arbiter, 343 Guilty Spark, C. Halsey
Were it So Easy by Sigma0327 reviews
Six's life was a giant war. Every battle was a test of sheer tenacity and stubbornness against insurmountable odds. Every moment, every bullet fired, every Covenant, Insurrectionist, and Flood spore killed has led up to his last fight. Once again he was one of the few that stood between Earth and her enemies. This would be his final battle, and nothing could change that, right?
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 12 - Words: 165,032 - Reviews: 232 - Favs: 1,035 - Follows: 1,469 - Updated: 3/17 - Published: 11/9/2020 - SPARTAN-B312/Noble Six, Tali'Zorah, Miranda L., Shepard
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: 32 - Words: 104,023 - Reviews: 44 - Favs: 84 - Follows: 90 - Updated: 3/17 - 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: 14 - Words: 42,082 - Reviews: 30 - Favs: 86 - Follows: 119 - Updated: 3/17 - Published: 1/26
HALO: Galactic Incursion by floodproof07 reviews
On a newly established outer colony world of Charis, first contact is made with the Imperials after their hunt for Alderaanian refugees, who have discovered a Halo and with it the Milky Way. Imperial colonization efforts are launched with hostile intents against the native residents, unknowingly bringing war with the powers of the Milky Way. 2561 - New Hope. CH4 in SUMMER
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 17,612 - Reviews: 59 - Favs: 208 - Follows: 279 - Updated: 3/17 - Published: 10/16/2023 - Master Chief/John-117, Arbiter
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: 28 - Words: 196,306 - Reviews: 235 - Favs: 496 - Follows: 572 - Updated: 3/17 - Published: 4/17/2022 - Clark K./Kal-El/Superman, Master Chief/John-117
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: 11 - Words: 59,882 - Reviews: 25 - Favs: 79 - Follows: 113 - Updated: 3/16 - Published: 4/26/2023
Spirit Unto Dawn by free man writer reviews
Spartan's found only to be lost. A ship filled with humans in a galaxy not their own. The Spirit of Fire finds itself with new allies in a galaxy they are unfamiliar with, dealing with its own set of problems and apocalyptic enemies. Co-created and written with BulletStormX. UNDERGOING REWRITE AND REVAMP
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 15 - Words: 120,849 - Reviews: 784 - Favs: 1,796 - Follows: 2,273 - Updated: 3/16 - Published: 4/16/2020 - Master Chief/John-117, SPARTAN-B312/Noble Six, Tali'Zorah, Shepard
The bloody Hare by Lighting wolf knight
In a reality where the nails never existed... Comes the Eater of Worlds and his sons... To free the galaxy from their shackles. Rated T for violence, death and profanity.
Crossover - Warhammer & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 3,049 - Favs: 11 - Follows: 14 - Updated: 3/16 - Published: 2/13 - Khârn the Betrayer, Kelly-087, OC
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: 10 - Words: 42,012 - Reviews: 67 - Favs: 130 - Follows: 167 - Updated: 3/16 - Published: 4/12/2023 - Master Chief/John-117, General Grevious, Count Dooku, Jorge-052/Noble Five
Halo: Iron kingdoms by jjimenez042v reviews
After the final battle of the ark, The Master Chief and Cortana found themselves on planet that mix steam-power technology with magic as great kingdoms fight each other supremacy. Force to adapt this new world they must forge alliance with unlikely people while dealing with strange enemies while they look for way home.
Crossover - Halo & Warmachine - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 5,787 - Reviews: 5 - Favs: 2 - Follows: 5 - Published: 3/16
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: 20 - Words: 148,564 - Reviews: 162 - Favs: 440 - Follows: 571 - Updated: 3/13 - Published: 3/2/2022 - SPARTAN-B312/Noble Six, No. 12/Hibiki, No. 11/Hikari, No. 16/Toyotama
Code Lyoko: War logs 1 by superman42 reviews
the stories are out of order. this is the correct timeline in case you're confused: Heart of Ice (this is an alternate version that sets up crisis core for War Logs 2 which is the actual Crisis Core, this version is a scrapped concept) Dark harvest (CH 1) from here the chapters are: ( left side actual chapter) 3 (ch 2) 4 (ch 3) 5 (ch 4) 6 (ch 7) 7 (ch 5) 8 (ch 6) 9 (ch 8) HOI WL2
Crossover - Code Lyoko & Halo - Rated: M - English - Tragedy/Drama - Chapters: 15 - Words: 17,146 - Reviews: 9 - Favs: 3 - Follows: 2 - Updated: 3/12 - Published: 3/1/2022 - Aelita S., Jeremie B., Yumi I., OC - Complete
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: 8 - Words: 30,436 - Reviews: 33 - Favs: 136 - Follows: 202 - Updated: 3/11 - Published: 1/20 - [Korra, SPARTAN-B312/Noble Six]
Rose Empire Space Command by Akyy-Wolf reviews
The Rose Empire a multi-system wide faction using UNSC model ships thanks to the assistance of the Forerunner ship forges within Remnant, Oblivion. They discover the Planet they named Eques. How does the story end, no one will know. Follow Team RWBY and their friends as they survive whatever's out in the world.
Crossover - Halo & RWBY - Rated: M - English - Poetry/Sci-Fi - Chapters: 2 - Words: 17,550 - Reviews: 1 - Favs: 7 - Follows: 5 - Updated: 3/11 - Published: 3/5 - Team RWBY
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: 53 - Words: 205,313 - Reviews: 93 - Favs: 239 - Follows: 286 - Updated: 3/10 - Published: 7/15/2023 - Space Marines, OC, Arbiter, Linda-058
Voltron Spartan Defendors by Codey-Wraith reviews
Who would you want to control Voltron? A soldier that protects those around them or a power hungry madman? Follow the Master Chief, and his allies as they assemble Voltron to defeat those who threaten the universe.
Crossover - Halo & Voltron: Legendary Defender - Rated: M - English - Sci-Fi/Fantasy - Chapters: 8 - Words: 41,084 - Reviews: 37 - Favs: 96 - Follows: 122 - Updated: 3/9 - Published: 3/30/2018 - Master Chief/John-117, Cortana, Princess Allura
The Last Metroid by Two Dudes and a Dream reviews
Her Metroid DNA had taken over, resulting in a monstrous transformation. Unable to control her powers, when attempting to escape ZDR, her ship loses power due to her actions. 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…
Crossover - Metroid & Halo - Rated: M - English - Sci-Fi/Drama - Chapters: 41 - Words: 187,126 - Reviews: 386 - Favs: 418 - Follows: 549 - Updated: 3/9 - Published: 9/20/2022 - Samus A., Adam, Master Chief/John-117, Cortana
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