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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: 98 - Words: 555,260 - Reviews: 448 - Favs: 958 - Follows: 1,115 - Updated: 7h - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
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: 53 - Words: 214,323 - Reviews: 524 - Favs: 673 - Follows: 844 - Updated: 12h - Published: 11/29/2022 - Master Chief/John-117, Cortana, Commander, Rapi
The Terminus Exarchate by infamouswestgate reviews
Qelet B'Norai, Batarian cartel-kin and agent of the Covenant, travels the swallowed-yet-undigested worlds of the Terminus Exarchate! Can he save the Covenant Empire from collapsing underneath its own great weight?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 20 - Words: 59,457 - Reviews: 21 - Favs: 14 - Follows: 20 - Updated: 11/13 - Published: 9/11
Halo : the galactic contact by marine man 63 reviews
The unsc Frigate Thunder and its captain urban holland have been dragged into the Andromeda galaxy and encounter the empire an the rebels who will they side with and will reinforcements come
Crossover - Halo & Star Wars - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 7,301 - Reviews: 7 - Favs: 9 - Follows: 14 - Updated: 11/12 - Published: 11/5
A Whole New World by Spartan III Commando reviews
Noble six's story did not end on Reach, he escaped the doomed planet after saving the Pillar of Autumn, and he and 117 fought across each Halo, until an incident sent him to a whole new world. And he is wholly unprepared for the journey in store.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 14 - Words: 63,078 - Reviews: 84 - Favs: 442 - Follows: 626 - Updated: 11/12 - Published: 7/7/2016 - SPARTAN-B312/Noble Six
Battlestar UNSC by StarDude117 reviews
Reach is under attack when the orders come down the line for all UNSC assets to rally at Reach in defense for the last bastion before Earth Task force Midway's Survivors answer the call however unknown to them in a different dimension the Twelve colonies of Kobol are under attack and they are losing see how the sudden appearance of a small UNSC task force changes things better
Crossover - Halo & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi/Adventure - Chapters: 32 - Words: 44,594 - Reviews: 104 - Favs: 65 - Follows: 97 - Updated: 11/11 - Published: 10/18 - OC, W. Adama, S. Tigh, Gaeta
The Spartan From Themyscira by Foundunknown01 reviews
For the last two thousand years, Themyscira has isolated itself from the rest of mankind. Building itself up and ignoring the plights of the world which surrounds it. Unfortunately, their calm is shattered when a strange craft falls to earth on the Eastside of their island. Leading to the first man to ever grace their shores since they isolated themselves from the world.
Crossover - Halo & Justice League - Rated: T - English - Sci-Fi/Fantasy - Chapters: 17 - Words: 57,237 - Reviews: 82 - Favs: 213 - Follows: 285 - Updated: 11/11 - Published: 9/8 - Clark K./Kal-El/Superman, Bruce W./Batman, Diana of Themyscira/Wonder Woman, Barbara M./Cheetah
Shadow of Sol Redux by SinArchbishop reviews
Rewrite of my old fanfiction. a UNSC Super Carrier is transported to the world of Arknights following a malfunction. Will the crew and soldiers of UNSC Sol be able to be left alone on Terra or are they going to be involved in their affairs? Will they bring peace, justice, and prosperity or will there only be War? Rainbow Six Siege is also gonna be included in this story.
Crossover - Halo & Arknights - Rated: K+ - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 4,761 - Reviews: 3 - Favs: 15 - Follows: 28 - Published: 11/11
Shadow of Sol Discontinued (Being Rewrote in different fanfiction) by SinArchbishop reviews
a UNSC Super Carrier went MIA after entering slip space and not arriving at its intended destination. Instead, it comes from a mysterious continental world. What intentions would this strange but similar-looking race have for the inhabitants of Terra? Would the UNSC have become xenophobic show mercy and help them or will they pull a Covenant? Fixed grammar issues in Ch.1 & 2.
Crossover - Halo & Arknights - Rated: M - English - Sci-Fi/Suspense - Chapters: 12 - Words: 43,909 - Reviews: 67 - Favs: 55 - Follows: 83 - Updated: 11/8 - Published: 7/26 - Kal'tsit
The Fifth-Race Reclaimers (REPUBLISHED) by Piero217 reviews
The original story, republished in order to rectify plot holes and inconsistencies and whatnot, as well as to incorporate newer lore from both sides of the fence. Same summary as the original.
Crossover - Halo & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 12,172 - Reviews: 5 - Favs: 36 - Follows: 50 - Updated: 11/7 - Published: 10/23 - Master Chief/John-117, C. Halsey, Cortana, John S.
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: 32 - Words: 130,420 - Reviews: 549 - Favs: 1,158 - Follows: 1,621 - Updated: 11/7 - Published: 12/26/2021 - OC, Tali'Zorah, Admiral Hackett, Rael'Zorah
The New Hope:The Phoenix Rises by Johnnieboy11 reviews
It is the Dark Age of Axis Victory and the world is rapidly crumpling. In the West, the Organization of Free Nations maintains the last democracies in the world through force of arms, while East of the Atlantic, the Axis's reign of terror over Europe and Asia continues. One unknown contact, however, is set to tip the balance of power forever.
Crossover - Halo & Hearts of Iron - Rated: M - English - Romance/Sci-Fi - Chapters: 5 - Words: 24,460 - Reviews: 23 - Favs: 78 - Follows: 108 - Updated: 11/7 - Published: 9/10 - J. Cutter, E. Anders, Douglas-042, OC
The Arbiter (Thel 'Vadam) vs Bo Katan One-Shot by The OC Maniac reviews
A One-shot story that features The Arbiter from Halo facing off against Bo Katan from Star Wars
Crossover - Halo & Mandalorian - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 5,759 - Reviews: 2 - Favs: 4 - Follows: 2 - Published: 11/6 - Arbiter, Bo-Katan Kryze - Complete
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: 32 - Words: 115,745 - Reviews: 202 - Favs: 659 - Follows: 944 - Updated: 11/6 - Published: 7/8/2022 - Rookie, Shepard
Buzzard Buccaneer Radio by General Rage reviews
Boz the Buzzard hosts this pirate radio station, beaming out music to the Normandy, Fallen Serpent, Crusty Chorka and Ascendant Justice non-stop. BBR has only one mission, to keep Rock n Roll alive in the dark void of outer space. A companion story to "Remnants" that shows what happens while Shepard is off playing hero. Part of the Wormhole Chronicles Saga.
Crossover - Halo & Mass Effect - Rated: M - English - Humor/Sci-Fi - Chapters: 13 - Words: 103,203 - Reviews: 110 - Favs: 111 - Follows: 126 - Updated: 11/5 - Published: 9/21/2016 - OC
Book One: Harvest by Believer218 reviews
The year is 2583. Humanity stands strong, even twenty-six years after a disastrous first contact. But it seems that wherever they go, war will follow. And this war will grip the galaxy like no other. The first adventure of Mass Effect: The Reclaimer Saga. Rated M for graphic depictions of violence.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 8 - Words: 35,684 - Reviews: 105 - Favs: 107 - Follows: 158 - Updated: 11/4 - Published: 4/4 - [Master Chief/John-117, Ashley W.] Arbiter, Saren A.
Touhou: Illusionary World and the Ghost of Reach by The Mighty Soryuz reviews
A Spartan never goes quietly into the howling dark to never return, left on the dying planet Reach a Lone Wolf will make peace with his life, and be put into the chance of a new life. Boundaries rift open and a Ghost drifts among Youkai, now to find his new place in a Fantastical Land of Status-Quo. His arrival may herald a new coming incident, but his abilities will prove vital.
Crossover - Halo & Touhou Project - Rated: M - English - Supernatural/Romance - Chapters: 2 - Words: 7,529 - Reviews: 5 - Favs: 24 - Follows: 35 - Updated: 11/4 - Published: 4/11 - SPARTAN-B312/Noble Six, Marisa K., Reimu H.
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: 35 - Words: 193,977 - Reviews: 981 - Favs: 1,792 - Follows: 2,278 - Updated: 11/4 - Published: 5/16/2019 - Master Chief/John-117
Galactic Conflicts: Tales of First Contact by TheDoctor1998 reviews
Humanity and its allies have stood strong after the Great War with the Covenant. Follow the Systems Alliance as it goes through a first contact nearly as disastrous as the one that lead to the Great War.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 11 - Words: 51,005 - Reviews: 279 - Favs: 515 - Follows: 720 - Updated: 11/3 - Published: 2/6/2023
Remnants by General Rage reviews
From Halo's ashes, a mismatched Alliance is born. UNSC soldiers now serve alongside both Batarian deserters and shifty Jackal Space Pirates. Now Shepard and Master Chief have to keep these strange bedfellows from killing one another before they can stop an emergent new threat to the galaxy. The Next Swashbuckling Chapter of the Wormhole Chronicles.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 49 - Words: 1,030,698 - Reviews: 917 - Favs: 640 - Follows: 714 - Updated: 11/3 - Published: 4/22/2016 - Master Chief/John-117, Cortana, Tali'Zorah, Shepard
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: 95 - Words: 1,111,963 - Reviews: 276 - Favs: 589 - Follows: 637 - Updated: 11/2 - Published: 9/29/2020 - Sole Survivor, Arthur Maxson, Shaun, OC
Sunrise, Parabellum by Hereshey reviews
With the Vinetan Campaign squared-away and Man's homeworld tucked firmly under the Nation's shoestring belt, the Invasion of Kitezh now starts in earnest. The penultimate smackdown with the Empire's regent-lords is coming and out in the void beyond the Oort, a scouting ship cashes-in its ticket to safety as the Office of Naval Intelligence fires-up its latest Forerunner toy.
Crossover - Halo & SIGNALIS - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 3,719 - Reviews: 3 - Favs: 8 - Follows: 7 - Published: 11/2
Into the Howling Dark by long night of solace reviews
Hundreds of millions of years ago, Humanity, Forerunners and the SanShyuum, the tier-1 species protected the galaxy. But the peace never lasted as the threat of flood and the reapers brought the Milkyway to the edge of extinction. Now the warriors of the past needs to guide the future galaxy and stop history from repeating itself.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 16,465 - Reviews: 16 - Favs: 78 - Follows: 95 - Updated: 11/2 - Published: 10/23 - Master Chief/John-117, Didact, D. Anderson, Shepard
Justice League of Amazons: Halo by Angry lil' elf reviews
In a world where the rogue Amazon Aresia succeeds in her plan to wipe out all men on Earth, she has doomed humanity to extinction and a newly reformed Justice League must try and salvage the world. But hope is not lost and it comes in the form of a Spartan II Commando and his AI from another universe. His name: Master Chief Petty Officer John-117.
Crossover - Halo & Justice League - Rated: M - English - Sci-Fi/Adventure - Chapters: 23 - Words: 121,903 - Reviews: 418 - Favs: 1,243 - Follows: 1,264 - Updated: 11/2 - Published: 1/13/2016 - Master Chief/John-117, Diana of Themyscira/Wonder Woman, Shiera H./Shayera Hol/Hawkgirl
Brotherhood of Steel:Chronicles of the 86th UNSC Assault Corps by Johnnieboy11 reviews
A veteran fleet formed of the few survivors of Reach goes missing upon their jump toward Earth. Originally meant to reinforce the Home Fleet with a slew of fresh units, the dozen vessels now find themselves over a foreign world engaged in a familiar war of survival with a rogue army of AI and their own prejudices against each-other. A new world to protect and new challenges await.
Crossover - Halo & 86 エイティシックス - Rated: T - English - Sci-Fi/Adventure - Chapters: 31 - Words: 253,204 - Reviews: 209 - Favs: 448 - Follows: 525 - Updated: 11/1 - Published: 11/1/2021 - OC, Vladilena Milizé/Lena, Shinei Nouzen, Theo Rikka
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