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Unforgotten by de4deye117 reviews
After waking up in a unknown world, a SPARTAN-ll commando has no memory of his past life. Now he travels with a young girl in hopes of finding out who he really was, and who he will come to be.
Crossover - Pokémon & Halo - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 28 - Words: 71,086 - Reviews: 9 - Favs: 5 - Follows: 5 - Updated: 1h ago - Published: 1/20 - May/Haruka, Dawn/Hikari, OC
Insertion - The Defiance of Fate by Vinh S-030
William II S043 Status: KIA. Or so the UNSC thought. Following the events inside of the Micro Dyson Sphere, William wasn't KIA; no, he was very much alive. Fifteen years following his supposed death, he reappears inside of UNSC space, far from Onyx. Returning is a more talkative Spartan with one hell of a story to tell and will be key to introducing the UNSC to the galactic level.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Fantasy - Chapters: 1 - Words: 1,081 - Favs: 2 - Follows: 3 - Published: 3h ago
Star Wars: Pestilence by Croatoan Cabin
It is the end of the Cold War. The Galactic Republic is threatened by the encroaching Sith Empire. Fearful that an unpreventable return of the Galactic Civil War is upon them, Grand Master of the Jedi Order Satele Shan orders her most trusted apprentice to head a secret Jedi scouting mission in the hopes of unveiling a new and dire menace from the dark side.
Crossover - Halo & Star Wars - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 1 - Words: 1,840 - Follows: 1 - Published: 3h ago
Where Titans Tread by JLake4 reviews
In the eyes of the Prophets, the Galaxy is a place wherein the Gods strode freely before the Great Journey. Entering into the galactic community challenged them, and when Shepard awakes they find that the Galaxy is not some haven for the ghosts of Gods long dead. It is Where Titans Tread. [Sequel to Divergent Pasts]
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Suspense - Chapters: 5 - Words: 20,005 - Reviews: 13 - Favs: 20 - Follows: 24 - Updated: 5h ago - Published: 2/13
Heart of the Storm by Aleixo reviews
Reach has fallen and Noble Six is all that remains on the planet. In a valiant last stand Six mysteriously finds himself in the world of another. How will he come to terms with it? What will he do? Can he overcome his loss and find peace at last? Six pairing is yet to be decided. Plan to span over whole mass effect series and possibly beyond.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Romance - Chapters: 1 - Words: 1,203 - Reviews: 4 - Favs: 7 - Follows: 9 - Published: 21h ago - SPARTAN-B312/Noble Six, Garrus V., Tali'Zorah, Shepard (M)
Trailers by Frost the Arctic Fox
Just a bunch of Trailers (Fixed the wrong Chapter)
Crossover - G. I. Joe & Halo - Rated: T - English - Adventure/Humor - Chapters: 3 - Words: 1,566 - Updated: 3/4 - Published: 2/28
Different Galaxies Same Fighting Heart by BeeSamusnChief reviews
After loosing Cortana and gaining, his team back. Chief awakes from cryo on the Infinity, and is ordered to investigate an unkown alien planet, that the Covenant have been dsearching for some sort of weapon. When the weapon turns out to be a someone, Chief is put in a situation he has never been in through his entire legendary history. Can he survive the coming action?
Crossover - Metroid & Halo - Rated: T - English - Family/Humor - Chapters: 3 - Words: 19,687 - Reviews: 16 - Favs: 21 - Follows: 23 - Updated: 3/3 - Published: 9/30/2014 - Samus A., Master Chief/John-117
Red Cobra by Billybobjoe47s reviews
Last time the UNSC discovered a mysterious alien artifact, the Halos came within seconds of activating. Every problem the UNSC has had in the last 50 years has been because of aliens and their blasted artifacts. So when a newly-surveyed system holds a mysterious artifact, there is great cause for worry. Operation RED COBRA is intended to remedy that worry- by any means necessary.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 11,351 - Reviews: 65 - Favs: 214 - Follows: 302 - Updated: 3/3 - Published: 1/6 - Master Chief/John-117, T. Hood
The Fighting Spirit by smart grid reviews
Spartans never die, they say. When Jorge gave his life to save his home planet of Reach, he never imagined that he would survive. But now he finds himself neck deep in the troubles of another universe; he will do what he has been trained to do, what all Spartans do best: fight.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 32 - Words: 150,042 - Reviews: 546 - Favs: 635 - Follows: 845 - Updated: 3/3 - Published: 12/1/2011 - Jorge-052/Noble Five, Shepard (F)
Borderlands the Re-Sequel Sequel: Borderworlds by Anarkyrie42 reviews
Jack dead for 3 years, the galaxy's at peace, and the Infinity is on a mission to lock down Vaults in an undiscovered galaxy. Little do they know, there are still remnants of the powerful society from before the Forerunners detonated a Halo array to save them from the Flood... Star Wars, Halo, Borderlands, Oh My! Read Borderlands: The Re-Sequel first!
Crossover - Halo & Star Wars - Rated: T - English - Adventure/Romance - Chapters: 4 - Words: 29,844 - Reviews: 5 - Favs: 3 - Updated: 3/3 - Published: 2/18 - Master Chief/John-117, T. Lasky, Sev, Boss
Desolation by hunter 139 reviews
An ODST awakes in a Pelican crash site on an unknown planet and tries to uncover the fate of his squad. Instead he uncovers something better left buried. Based off of an old Halo 3 machinima. Multi-crossover.
Crossover - Halo & Mass Effect - Rated: T - English - Mystery/Suspense - Chapters: 6 - Words: 9,923 - Reviews: 8 - Favs: 4 - Follows: 9 - Updated: 3/3 - Published: 2/19
UNSC Marauder by Goat13 reviews
Thrown into a different time, Harry must fight for not only his own survival, but for mankind's as well.
Crossover - Harry Potter & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 46,895 - Reviews: 47 - Favs: 169 - Follows: 207 - Updated: 3/3 - Published: 1/1
The Sum is Greater than its Parts by Maersikai reviews
Having long since combined forces, a fleet of the Humans and Covenants finest are torn from the universe they know to be thrown in to a strange and desolate reality. They will strive to uphold the Mantle when faced with a strange set of aliens and humans facing a galactic threat.
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 7 - Words: 22,811 - Reviews: 36 - Favs: 76 - Follows: 85 - Updated: 3/3 - Published: 3/2
Resonnance by SounDemoN reviews
Crossover of Halo, Half-Life and Mass Effect, AU for all three. 27th Century Humanity encounters the Reapers and the Council races, while dabbling in teleportation technology, unknowing of the slumbering beast they would awaken. Rated K for the time being, will be upgraded as needed. I own none of the used existing fictional universes/characters/tech/stuff. Will add a cover later.
Crossover - Halo & Mass Effect - Rated: K - English - Sci-Fi/Adventure - Chapters: 3 - Words: 22,277 - Reviews: 8 - Favs: 32 - Follows: 44 - Updated: 3/3 - Published: 2/23
Halo: First Contact by DrakeTheTraveller reviews
Premise-Alternate universe, humanities first contact was originally with the zealous religious hegemony dubbed, The Covenant. But what if they met a much friendlier race? This story answers that question
Crossover - Star Fox & Halo - Rated: T - English - Sci-Fi/Drama - Chapters: 6 - Words: 59,764 - Reviews: 19 - Favs: 29 - Follows: 40 - Updated: 3/3 - Published: 2/8 - Fox M., Krystal, OC
Mass Effect: Death From Above by Duncannuva reviews
When the Future Meets the past it is not always good. However in the Reaper war you need all the help you can get even if it is a warship the Size of a Space station that moves and fights you don't ask questions
Crossover - Halo & Mass Effect - Rated: K - English - Mystery/Sci-Fi - Chapters: 1 - Words: 1,244 - Reviews: 5 - Favs: 1 - Follows: 1 - Published: 3/3 - OC, Arbiter, Shepard (M), Garrus V.
Mass Effect: Invasion by VR Commando ATA reviews
The final chapter of my Mass Effect storyline. The Reapers have arrived. With so many changes having taken place in one Galaxy, will they be able to stop them? Or will the might of another Galaxy be all they need? The heroes of both join forces to combat what has harvested the galaxy for thousands of millennium. Sequel to Mass Effect: GHOSTs.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 7 - Words: 25,375 - Reviews: 12 - Favs: 21 - Follows: 23 - Updated: 3/2 - Published: 9/13/2014 - Master Chief/John-117, Shepard (F), Shepard (M)
Agent Reach by Little Dragon-kun 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? Rated T for now, will be bumped up to M later
Crossover - Halo & Red vs. Blue - Rated: T - English - Sci-Fi/Romance - Chapters: 7 - Words: 19,521 - Reviews: 78 - Favs: 56 - Follows: 69 - Updated: 3/2 - Published: 10/8/2014 - SPARTAN-B312/Noble Six, Tex/Allison
The Phoenix Spartan by eliwats22
Died by flames in his world, reborn as hero in another. Sparten Tadashi-714 thought he can let go of his past, but it seem a brotherhood must reunited to save the universe.
Crossover - Halo & Big Hero 6 - Rated: T - English - Adventure - Chapters: 5 - Words: 4,570 - Favs: 2 - Follows: 4 - Updated: 3/2 - Published: 2/21 - T. Lasky, Hiro Hamada, Tadashi Hamada, OC
The tall, the small, and THE DEAD by The Bounty Hunter Sev reviews
After leaving the Takagi's compound, our favourite zombie slayers are forced to fight old and new enemies alike. But they won't have to do it alone because not only will they have the help of a bad ass sniper chick , but an advanced super soldier..."Spartans never die, they just time travel to the past...wait huh?"
Crossover - Halo & Highschool of the Dead - Rated: T - English - Sci-Fi/Horror - Chapters: 11 - Words: 48,687 - Reviews: 11 - Favs: 12 - Follows: 16 - Updated: 3/2 - Published: 1/10
Through the Timestream by Romans-154 reviews
In an attempt to save his fireteam, Titan Guardian Callixtus sacrifices himself to defeat Atheon but a desperate timestream opens, throwing him deep in the past, far past the Golden Age, and into a holy alien city called High Charity. Not all is right with the Past, and as the Great War rages on, time warps around them and new yet old enemies and allies will soon arise.
Crossover - Halo & Destiny - Rated: T - English - Adventure/Sci-Fi - Chapters: 8 - Words: 52,666 - Reviews: 41 - Favs: 49 - Follows: 53 - Updated: 3/2 - Published: 12/28/2014 - Master Chief/John-117, Human
Halo: Attack of The Clones by TonyLata625 reviews
Inter dimensional time travel stuff OC's (sorry for bad summary) rated T for safety. (First story!) Please review.
Crossover - Star Wars & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 1,008 - Reviews: 3 - Favs: 1 - Published: 3/2 - Obi-Wan K., OC, Master Chief/John-117, OC
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: 3 - Words: 6,611 - Reviews: 16 - Favs: 26 - Follows: 17 - Updated: 3/1 - Published: 12/10/2014 - Master Chief/John-117, T. Lasky, Korra, Mako
Mass Effect: The New Journey by Arashi the Solar Phoenix reviews
During a Joint Deployment, the UNSC Infinity and Her Sangheili allies are suddenly thrown into a new Galaxy, and end up near Charon before the Systems Alliance discovers the Charon Relay. Alliances are forged and how will the galaxy react to an aggressive humanity that not only doesn't use Mass Effect technology, but will not let anyone stand in their way of expansion? AU PreME1
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 12 - Words: 115,650 - Reviews: 858 - Favs: 1,232 - Follows: 1,545 - Updated: 3/1 - Published: 1/26/2014
Halo 3:The Rookie by death7559 reviews
The Rookie. One of those strong, silent, types. After finding himself trapped in a strange alien universe, The Rookie joins on with commander Shepard to hunt down a rogue SPECTRE who may just know The Rookie.
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 5 - Words: 3,672 - Reviews: 32 - Favs: 44 - Follows: 85 - Updated: 3/1 - Published: 4/1/2014 - Rookie, Shepard (F), Garrus V., Tali'Zorah
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