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The Last Metroid by ShadowLight223 reviews
Her Metroid dna has 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/Adventure - Chapters: 6 - Words: 27,733 - Reviews: 41 - Favs: 106 - Follows: 182 - Updated: 15h - Published: 9/20 - Samus A., Master Chief/John-117
The Rook by Twisted Fate MK 2 reviews
On the way down to New Mombasa, Rookie falls into the Slipspace Rupture and ends up crashing down on Menae, high above Palaven, right in the midst of the Reaper War. From there, the war itself will shift and the fighting persists, but who knows what an ODST will add to the mix. (Redo of an older story)
Crossover - Halo & Mass Effect - Rated: M - English - Adventure - Chapters: 8 - Words: 29,337 - Reviews: 64 - Favs: 281 - Follows: 418 - Updated: 22h - Published: 7/8 - Rookie, Shepard
Obsidian by Viper-Vivv reviews
After the events of Halo 2, the UNSC is confronted with new enemies and allies as both sides struggle to control the Ark and its Rings. Combines Halo, Star Wars, Evangelion, and other series into one universe.
Crossover - Halo & Star Wars - Rated: M - English - Adventure/Sci-Fi - Chapters: 2 - Words: 212 - Reviews: 2 - Favs: 2 - Follows: 4 - Updated: 23h - Published: 11/26 - Master Chief/John-117, A. J. Johnson, Darth Vader, Luke S.
Mass Effect: Forward Unto Dawn by Wiggybaby67 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. And just who is this Commander Shepard they'll be working with?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 2,145 - Reviews: 4 - Favs: 16 - Follows: 24 - Published: 11/26 - Master Chief/John-117, Shepard
Operation: Voltron by Rnij reviews
4 years after the Arcadia Moon Mission, one of the [Classified] crashes onto earth warning of a new [Classified]. ONI didn't believe him. 5 teenagers did. Now, [Classified] and his team must battle a [Classified] with a giant robot called [Classified] two [Classified], and a missing [Classified].
Crossover - Halo & Voltron: Legendary Defender - Rated: T - English - Adventure/Mystery - Chapters: 3 - Words: 26,351 - Reviews: 51 - Favs: 37 - Follows: 40 - Updated: 11/26 - Published: 8/10/2018 - OC, Lance, Pidge G./Katie H., Princess Allura
Sonic the Hedgehog: Wrath of the Banished by Skootmeister
Sonic and his friends have experience with aliens. From the Black Arms to the Whisps. But the thing about aliens is that they imply a bigger galaxy out there, and a battle against Eggman has attracted that galaxy’s attention. It’s about to come knocking whether they like it or not. And the consequences will be felt.
Crossover - Halo & Sonic the Hedgehog - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 19,464 - Favs: 3 - Follows: 2 - Published: 11/26
Star Wars: Tales of the Infinity's Odyssey by IX404 reviews
While many know of the story of Lasky, the Master Chief and his compatriots, few people know of the stories that happened during these major events. These are the stories of the men and women that also experienced the Odyssey of the Infinity.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 2,346 - Reviews: 9 - Favs: 26 - Follows: 26 - Published: 11/25 - G. Marek/Starkiller, Jyn E., T. Hood, C. Halsey
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: T - English - Fantasy/Sci-Fi - Chapters: 61 - Words: 281,625 - Reviews: 141 - Favs: 465 - Follows: 556 - Updated: 11/24 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
Men and Machines by 1DL1NG KN1GHT reviews
Only a year after the battle of the Ark, the Master Chief and Cortana are found by General Grievous and the Malevolence. The UNSC having the slaughter of the Human-Covenant war so fresh in their minds, would hardly be able to stomach being involved in another. But, Sidious’ has plans for all the players on the chess board… and not just half…
Crossover - Star Wars: The Clone Wars & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 2,271 - Reviews: 7 - Favs: 18 - Follows: 27 - Published: 11/24 - Master Chief/John-117, Cortana, General Grevious
Noble Team of Terra (On Hiatus) by FantasyRider35 reviews
Noble Team, six members, all but one is dead, and their duty completed, their story in their universe has ended and are forever memorialized. But now a new world calls to them, reuniting the team and bringing them to the world of Tera. Here they are given another chance, both at life and to save a world from a catastrophe of unimaginable scales, but this time they won't be alone.
Crossover - Halo & Arknights - Rated: M - English - Adventure/Sci-Fi - Chapters: 15 - Words: 97,305 - Reviews: 29 - Favs: 95 - Follows: 126 - Updated: 11/24 - Published: 5/26 - Carter-A259/Noble One, SPARTAN-B312/Noble Six, Amiya
La Nueva Era de la Humanidad by Type-universe
La humanidad reclamara su trono como la especie dominante a través del multiverso a cualquier costo, no importa quien o que se interponga en su camino Será un multi-crossover, por eso parecerán personajes de otras obras pero las principales serán las dos que aparecen en la clasificación, además tendrá muchos muchos oocs
Crossover - Halo & Arifureta Shokugyou de Sekaisaikyou/ありふれた職業で世界最強 - Rated: M - Spanish - Sci-Fi/Fantasy - Chapters: 2 - Words: 10,991 - Updated: 11/23 - Published: 11/15
Evidence of Glory by Cat-Plant
In a world filled with peril, and uncertainty, either defeat or victory remains. Join Josi Vadam and his compatriots in a world rife with action and adventure as he discovers the truth of his world and his life in the Covenant and beyond! (what if the covenant and other beings in Halo had stands)(Part 7 Universe)(OC)(Alternative Arbiter)
Crossover - Halo & JoJo's Bizarre Adventure - Rated: M - English - Sci-Fi/Supernatural - Chapters: 8 - Words: 14,663 - Favs: 1 - Follows: 2 - Updated: 11/23 - Published: 10/4 - Arbiter, Rtas 'Vadumee
The Demon Of The Nine-Nine by SSJ Lone Wolf reviews
It had been ten years since Noble Six joined the NYPD, following the fall of Reach, quickly moving through the ranks and making detective, but when he is transferred to the 99th precinct he finds his life flipped upside down when he had to work alongside the eccentric squad of the Nine-Nine. If his own past doesn't drive him insane...they certainly will!
Crossover - Halo & Brooklyn Nine-Nine - Rated: M - English - Chapters: 14 - Words: 98,999 - Reviews: 405 - Favs: 617 - Follows: 681 - Updated: 11/23 - Published: 10/5/2021 - SPARTAN-B312/Noble Six, Jake P., Amy S, Rosa D.
Machines and Might by Strategic.Ignorance reviews
Eight years before the USJ Incident, the Hero Public Safety Commission learns of the Meta Liberation Army. Doubting the current heroes ability to stop this threat, the Commission sees this as the perfect opportunity to usher in a new age of heroes. The first step is the kidnapping of one hundred kids. Among them is Izuku Midoriya. Moderate AU.
Crossover - Halo & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Sci-Fi/Friendship - Chapters: 17 - Words: 62,330 - Reviews: 104 - Favs: 267 - Follows: 362 - Updated: 11/22 - Published: 12/1/2021 - William-043, Izuku M., Hitoshi S., Mei H.
BattleTech: Combat Evolved by IX404 reviews
While fleeing from the Inner Sphere following the Amaris Coup, the Exodus Fleet discovers an object out in the inky blackness of space. Little does General Kerensky or his sons know is that they will soon be within the center of a conflict that will decide the fate of Humanity and place the Star League-in-Exile at the forefront of the conflict.
Crossover - Mechwarrior/Battletech & Halo - Rated: T - English - Sci-Fi/Drama - Chapters: 18 - Words: 94,815 - Reviews: 242 - Favs: 173 - Follows: 174 - Updated: 11/22 - Published: 8/25 - Master Chief/John-117, A. J. Johnson, Arbiter, 343 Guilty Spark
Oly Oly Oxen Free by red october700 reviews
A routine mission to take out a high leader of the insurrection goes horribly wrong and ends with Blue team's death. But were given a second chance on Remnant. So let us see what kind of trouble they can get into shall we? Not good at summery. I also cant get everyone tagged. But Blue team and Team RWBY are all in this with Ruby and John being paired.
Crossover - Halo & RWBY - Rated: M - English - Adventure - Chapters: 8 - Words: 78,066 - Reviews: 30 - Favs: 97 - Follows: 142 - Updated: 11/22 - Published: 7/29/2020 - [Master Chief/John-117, Ruby R.] Fred-104, Yang X.L.
HALO: JL by G4dgetJunior reviews
After a slipspace accident sends a UNSC Frigate and a Banished warship through a rift in space time, Master Chief, Arbiter and others find themselves In a brand new universe. Unfortunately, There are more threats on the horizon, Old and New. As well as some new allies. The Multiverse will never be the same again.
Crossover - Halo & Justice League - Rated: T - English - Sci-Fi/Angst - Chapters: 3 - Words: 6,557 - Reviews: 3 - Favs: 22 - Follows: 28 - Updated: 11/22 - Published: 11/20 - Arbiter, Master Chief/John-117, Karen Starr/Kara Zor-L/Power Girl, J'onn J./Martian Manhunter
Everything is Fair in Love and War by VastErimos reviews
So you died? Nailed it. Here try again for my entertainment. OPMC, Waifu Catalog fic, if you have a problem with either of these that’s fine
Crossover - Halo & X-overs - Rated: M - English - Sci-Fi/Friendship - Chapters: 3 - Words: 10,198 - Reviews: 6 - Favs: 21 - Follows: 38 - Updated: 11/21 - Published: 8/9 - Fred-104, Serina
Collectors at Dawn v2 by jacksld850 reviews
A rewrite of the original Collectors at Dawn. Lost all of the work I had on it so I'll be redoing it from scratch.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 11,710 - Reviews: 3 - Favs: 16 - Follows: 34 - Published: 11/21 - Master Chief/John-117, Cortana, Miranda L., Shepard
Gundam Wars: Gryps War by lupiniiiredawesome reviews
A/N: what would happen if the Spirit of Fire were in UC.0087, and we're in the middle of the crossfire of a war between two human factions of the Titans and AEUG.. let's see how the events play out..
Crossover - Gundam UC & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 3,393 - Reviews: 5 - Favs: 9 - Follows: 12 - Updated: 11/20 - Published: 10/11
Shadow is the Light by CopperstarTomoe reviews
After the events of Deepground. Vincent Valentine and her charge Shelke were captured and detained by an mysterious group. 500 years past and when Vincent is awaken she realize how much has change. Now she has to help the Master Chief fight off the Covenant, Flood, and Deepground while facing all the secrets that's been kept from her. [Female Vincent Valentine]
Crossover - Final Fantasy VII & Halo - Rated: M - English - Friendship/Suspense - Chapters: 2 - Words: 97 - Reviews: 1 - Favs: 1 - Follows: 1 - Updated: 11/20 - Published: 11/11 - Vincent V., Master Chief/John-117, Cortana, Shelke R.
Iter In Astris by RememberReach312 reviews
After the Battle at the Ark, John-117 and Cortana are found and rescued by the long-lost UNSC "Spirit of Fire"... [Disclaimers within] [Cross-posted on SB] [Image not mine]
Crossover - StarTrek: Enterprise & Halo - Rated: T - English - Sci-Fi/Drama - Chapters: 1 - Words: 9,613 - Reviews: 10 - Favs: 56 - Follows: 79 - Published: 11/20 - Master Chief/John-117, Cortana, J. Cutter
Serenity by Space-Dweeb reviews
2542. Humanity lost the war against the Covenant, and has been assimilated into the galaxy-spanning conglomerate. John-117 and his crew, formerly humanity's greatest champions, were forced into a life of crime in order to survive. Aboard the Firefly-class ship Serenity, they travel the galaxy with one mission: get a ship, get a crew, keep flying.
Crossover - Halo & Firefly - Rated: T - English - Sci-Fi/Western - Chapters: 6 - Words: 22,957 - Reviews: 6 - Favs: 10 - Follows: 18 - Updated: 11/19 - Published: 8/14 - [Master Chief/John-117, Cortana] [Fred-104, Kelly-087]
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: 30 - Words: 142,696 - Reviews: 627 - Favs: 890 - Follows: 1,135 - Updated: 11/19 - Published: 1/28 - C. Halsey, OC, Itami, Tyuule
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: 58 - Words: 672,794 - Reviews: 168 - Favs: 325 - Follows: 353 - Updated: 11/19 - Published: 9/29/2020 - Sole Survivor, Arthur Maxson, Shaun, OC
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