Halo Crossovers
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Space Parrots, Plasma Rifles, and Orbital Bombardment by Wiggleyotter reviews
The Galactic Ikarian Imperium has, since it's conception, had a tough stance on bullies. They ruin just about everything and promote a cycle of hatred. So, when they explore an L-gate of mysterious construction and end up in totally unfamiliar territory during the Siege of Reach, what do they do? Kick the shit out of the Covenant, that's what.
Crossover - Halo & Stellaris - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 9,621 - Reviews: 33 - Favs: 34 - Follows: 46 - Updated: 5/26 - Published: 5/14 - OC
A Noble Rose by red october700 reviews
She was supposed to die here. Yet she finds herself on a new world. She has never been here but it welcomes her home like a wayward daughter that returned. Now she finds a new purpose. But how is she going to handle it all with these random flashbacks to a life she didnt live?
Crossover - Halo & RWBY - Rated: T - English - Chapters: 14 - Words: 133,218 - Reviews: 98 - Favs: 311 - Follows: 392 - Updated: 5/26 - Published: 2/13/2019 - Summer R., Team RWBY, Team JNPR, Qrow B.
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: 43 - Words: 195,246 - Reviews: 407 - Favs: 449 - Follows: 571 - Updated: 5/25 - Published: 9/20/2022 - Samus A., Adam, Master Chief/John-117, Cortana
Stargate Atlantis Fire Within by heavyneos reviews
Just as the Atlantis team think they have finally found a reprieve from the Wraith thanks to a fortuitous accident something hidden in deep space and from another world may bring more than one complication to the fight
Crossover - Halo & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 31,293 - Reviews: 61 - Favs: 132 - Follows: 163 - Updated: 5/25 - Published: 9/8/2023 - Rodney M., John S., OC
The Mantle of Remnant by KtyouVsWriting reviews
The Master Chief has saved Humanity at the cost of Cortana, one of his few remaining friends. More than he will admit, John relied on her, cared for her. To no longer have her means to lose another part of his humanity. Still the universe keeps going and once again, he is called to serve and protect Mankind. Now he has a choice: does he brave Remnant alone or does he embrace help?
Crossover - Halo & RWBY - Rated: M - English - Adventure/Friendship - Chapters: 32 - Words: 177,453 - Reviews: 900 - Favs: 1,706 - Follows: 2,170 - Updated: 5/22 - Published: 5/16/2019 - Master Chief/John-117
From the Dark by Twisted Fate MK 2 reviews
Nox is falling under the Covenant, and its people are retreating. But some aren't in a place where they can reach help. Alex Masters is one. Her friends slaughtered, and being chased by Jackals, she flees to the only place she knows of - an old shrine from a small, local following her mother had taken her to. There, she finds help - in a form she'd never have thought. (Idea Bunny)
Crossover - Halo & Dark Souls - Rated: M - English - Adventure/Fantasy - Chapters: 5 - Words: 19,470 - Reviews: 55 - Favs: 160 - Follows: 254 - Updated: 5/21 - Published: 12/11/2022 - Knight
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: 13 - Words: 100,902 - Reviews: 100 - Favs: 211 - Follows: 256 - Updated: 5/20 - Published: 8/24/2023 - Master Chief/John-117, Arbiter, 343 Guilty Spark, C. Halsey
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: 54 - Words: 208,796 - Reviews: 94 - Favs: 252 - Follows: 301 - Updated: 5/20 - Published: 7/15/2023 - Space Marines, OC, Arbiter, Linda-058
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: 2 - Words: 2,325 - Reviews: 1 - Favs: 4 - Follows: 6 - Updated: 5/19 - Published: 4/19
Stargate SG-1: The Fifth Race by i-defy-fate reviews
AU! Heavily inspired by the story: Project Blue Book by AmeliusTheAlteran. Elements of Halo will be here as well because I love the design of the ships, weapons, and equipment they use. This is a story of what a united earth could accomplish when given a common goal. I plan for this to be at least 200-250K words. No pairings! Slow Updates!
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Adventure/Sci-Fi - Chapters: 5 - Words: 27,662 - Reviews: 51 - Favs: 225 - Follows: 312 - Updated: 5/19 - Published: 11/23/2019 - S. Carter, D. Jackson, J. O'Neill, Teal'c
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: 3 - Words: 43,075 - Reviews: 42 - Favs: 210 - Follows: 295 - Updated: 5/19 - Published: 12/25/2023 - A. J. Johnson
Halo: A New Journey by mgarner3199 reviews
Master Chief wakes up in the Mass Effect universe and joins Commander Shepard in an effort to stop the Reapers. With time running out, can they stop the extinction of every species, or will they fade into legend?First, they got to stop the Reapers though...
Crossover - Halo & Mass Effect - Rated: K - English - Sci-Fi/Romance - Chapters: 4 - Words: 4,078 - Reviews: 21 - Favs: 53 - Follows: 89 - Updated: 5/18 - Published: 12/7/2021 - Cortana, Master Chief/John-117, Illusive Man, Shepard
The Exiles:A New Power by Johnnieboy11 reviews
The beginning of the Battle For Earth signaled the start of the final, bloodiest campaign of the Human-Covenant War. Hastily, a plan is put into motion and an Ark Fleet, composed of a dozen Phoenix-class vessels and their escorts, makes the jump out of system. Either interference, or malfunction, causes their arrival to a new Galaxy, where new threats lurk just around the corner.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 21 - Words: 82,575 - Reviews: 385 - Favs: 985 - Follows: 1,423 - Updated: 5/18 - Published: 12/26/2021 - OC, Tali'Zorah, Admiral Hackett, Rael'Zorah
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 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: 11 - Words: 47,482 - Reviews: 74 - Favs: 141 - Follows: 177 - Updated: 5/17 - Published: 4/12/2023 - Master Chief/John-117, General Grevious, Count Dooku, Jorge-052/Noble Five
A different journey by Dragon Cat84 reviews
The Master Chief is found by the Atlantis Expedition, how did the Master Chief end up in the early 21st Century and in the Pegasus Galaxy?
Crossover - Halo & Stargate: Atlantis - Rated: T - English - Chapters: 8 - Words: 31,947 - Reviews: 32 - Favs: 75 - Follows: 117 - Updated: 5/15 - Published: 3/24
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: 4 - Words: 17,400 - Reviews: 36 - Favs: 83 - Follows: 109 - Updated: 5/14 - Published: 11/23/2023 - Caesar, SPARTAN-B312/Noble Six
Kingmaker by Temujin the Obliterator reviews
In the midst of a Cold War between the CIS and the UNSC. An ONI agent and an ARC trooper discover a more sinister plot beneath the surface and most work together to orchestrate a coup against the Chancellor.
Crossover - Star Wars & Halo - Rated: M - English - Adventure - Chapters: 4 - Words: 50,903 - Reviews: 5 - Favs: 14 - Follows: 24 - Updated: 5/14 - Published: 4/12
Burning Stars by Lighting wolf knight reviews
When a fight with the Hive takes the Cabal and Humanity to another galaxy, a perilous alliance must be formed between the two groups. Rated T for violence, death, and profanity.
Crossover - Halo & Destiny - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 814 - Reviews: 1 - Favs: 9 - Follows: 13 - Published: 5/14 - Prophet of Truth, 343 Guilty Spark, OC, Lady Efrideet
Sins Of A Galactic Empire Reborn by zzzxxc1 reviews
When the Milky Way is revealed to the universe at large by a derelict CIS warship, the UEG are forced to become members of the transgalactic community, but its existence is soon threatened by the decline of the Republic, and the rise of an Empire. Adopted from SpaceCowboy2013.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi - Chapters: 22 - Words: 165,771 - Reviews: 1097 - Favs: 2,092 - Follows: 2,638 - Updated: 5/13 - Published: 7/28/2018 - Anakin Skywalker, Obi-Wan K., Master Chief/John-117, Cortana
Do not be afraid! by Life in the City
It was said that those who came before the Forerunner's created all life. They seeded fertile dark matter that exists and created universes. They willed atoms together to create intelligent life. Yet, despite their accomplishements, they fell without a fight. They let the denizens of the MilkyWay commit wholesale destruction of their society. Or did they?
Crossover - Star Wars & Halo - Rated: M - English - Horror/Sci-Fi - Chapters: 2 - Words: 8,733 - Favs: 4 - Follows: 8 - Updated: 5/12 - Published: 4/28
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: 146,634 - Reviews: 164 - Favs: 461 - Follows: 602 - Updated: 5/12 - Published: 3/2/2022 - SPARTAN-B312/Noble Six, No. 12/Hibiki, No. 11/Hikari, No. 16/Toyotama
The Wreck by Gabenator5 reviews
After the destruction of the Normandy, Tali'Zorah sets out to explore the lesser-explored regions of the galaxy in search of rare materials for the Migrant Fleet. During her adventures, she stumbles upon something that shouldn't exist within her universe. The galaxy will never be the same... [Rework: COMPLETED]
Crossover - Halo & Mass Effect - Rated: T - English - Fantasy/Sci-Fi - Chapters: 8 - Words: 25,101 - Reviews: 431 - Favs: 1,338 - Follows: 1,943 - Updated: 5/11 - Published: 1/7/2018 - Tali'Zorah
Ghosts of Reach: The Familiar Vanguard by Dan Is Here reviews
Louise, mocked for her lack of magic, aims to prove herself in a familiar summoning ritual. Despite low expectations, she inadvertently summons deceased Noble Team members Jorge, Kat, Carter, Noble Six, and Emile as her familiars. This unexpected outcome shocks everyone, including Louise, as they come to terms with their new partnership.
Crossover - Halo & Familiar of Zero - Rated: T - English - Sci-Fi/Adventure - Chapters: 15 - Words: 76,883 - Reviews: 26 - Favs: 130 - Follows: 170 - Updated: 5/11 - Published: 3/22/2023 - Carter-A259/Noble One, SPARTAN-B312/Noble Six, Louise
ARES:The Gods of War by Johnnieboy11 reviews
Mankind's Greatest Hero has finished his mission once more. Saving Earth from the Didact and his weapon of mass-recruitment, the Composer, the Master Chief and his AI companion, Cortana, find themselves mysteriously transported to a strange variation of Earth, where machines rule the surface and mankind hides below. The SPARTAN and those that join will fight to Reclaim the world...
Crossover - Halo & Goddess of Victory: Nikke - Rated: T - English - Adventure/Sci-Fi - Chapters: 47 - Words: 189,012 - Reviews: 486 - Favs: 586 - Follows: 754 - Updated: 5/10 - Published: 11/29/2022 - Master Chief/John-117, Cortana, Commander, Rapi
spartan returns home by phoenix emperor 23 reviews
injured on a mission the first son of minato and kushina. he found something that put him in a war he never thought was possible. on his final mission on reach he chose to be behind. with the wider of the UNSC and ONI thought he died on reach. he had a chance to go back. now he must defended his family and the woman he love from the shadows. even it means the world to think he dead
Crossover - Halo & Naruto - Rated: M - English - Romance - Chapters: 6 - Words: 24,719 - Reviews: 10 - Favs: 85 - Follows: 113 - Updated: 5/7 - Published: 11/1/2021 - [SPARTAN-B312/Noble Six, Hana I.] [Minato N., Kushina U.]
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