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Monster of Doom by
Wacko12 reviews
Sent away by Samuel Hayden, the Doom Slayer arrives on Earth in a different time with no memories. But that quickly changes one night in a town called Kuoh. Restored and with a new power, how will the Doom Slayer react to the supernatural and these new beings called Devils? How will the supernatural react to him? One thing is for sure: He'll rip and tear anyone that gets in his way
Crossover - Doom & High School DxD/ハイスクールD×D - Rated: M - English - Supernatural/Fantasy - Chapters: 6 - Words: 32,418 - Reviews: 157 - Favs: 508 - Follows: 619 - Updated: 11h - Published: 12/16/2018 - Doomguy, 666/Trihexa, Mephisto P.
Typhon's Legacy by
JGThorncross reviews
More than 2 decades after the end of the Frontier War, Jack Cooper and his daughter Melissa Cooper find themselves caught in the Turian invasion of the Frontier World Shanxi. How will a Veteran Pilot and his daughter face this new conflict - and how will it affect the galaxy at large?
Crossover - Mass Effect & Titanfall - Rated: T - English - Sci-Fi/Adventure - Chapters: 9 - Words: 11,332 - Reviews: 6 - Favs: 19 - Follows: 33 - Updated: 9/4 - Published: 8/7 - D. Anderson, Saren A., OC, Jack C.
Another day, another world by
SeanLacastesantos reviews
Fate strikes in once again as Naofumi gets summoned in another world at once. It is a world of wonder, or so he thought. It was full of secrets; secrets he wasn't aware of. There were also people; people he didn't know existed. Would the broken run away? Would the clueless risk to discover? Who would he trust? The ones who shine or hide in the darkness?(Check Reminders 4 more info)
Crossover - Rising of the Shield Hero/盾の勇者の成り上がり & Akame ga Kiru/アカメが斬る - Rated: T - English - Suspense/Adventure - Chapters: 10 - Words: 24,545 - Reviews: 26 - Favs: 46 - Follows: 55 - Updated: 9/3 - Published: 7/2 - Naofumi I.
It Started At Shanxi by
SpaceTurtleOX reviews
100 years after the end of the Human-Covenant War, when an ill-fated UNSC expedition opens Relay 314, it reveals a civilization unprepared for their arrival, and relics from a terrible past.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 25,866 - Reviews: 157 - Favs: 401 - Follows: 658 - Updated: 8/31 - Published: 7/26 - Master Chief/John-117, Cortana, Zaeed M., OC
Voyage unto Infinity by
supertruckin reviews
The USS Voyager comes face to face with the massive ship that is the UNSC Infinity after Voyager's nearly fatal first test of their slipstream warp drive. Getting home isn't their only issue. They will have to work together in order to unravel the ancient threat that plagues the new galaxy that they find themselves in. Star Trek:Voyager, Mass Effect, and Halo triple crossover
Crossover - Mass Effect & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 40,340 - Reviews: 136 - Favs: 353 - Follows: 515 - Updated: 8/30 - Published: 4/10 - Master Chief/John-117, Cortana, Shepard (M)
The Men From Onyx by
kpmh2001 reviews
A UNSC frigate is sent into another dimension after a disaster with their slipspace drive. Now lost in unknown territory, they must attempt to befriend the population of a local planet of strange humans. Slight AU as RWBY hasn't explained a few things about it's world that I have filled in.
Crossover - Halo & RWBY - Rated: T - English - Drama/Sci-Fi - Chapters: 15 - Words: 48,349 - Reviews: 164 - Favs: 229 - Follows: 318 - Updated: 8/29 - Published: 1/13 - F. Mendez, Kurt-051, J. Ironwood, Winter S.
The Emerald Knight by
HeyMrJack reviews
They say that The Emerald Knight is a legend, a fairytale. They say that he wore impenetrable green armor, and wielded a powerful sword that could cut through thousands of men and grimm in seconds- however, that is all a legend. The truth? The Emerald Knight is actually a sleeping soldier from another world, and he has now woken up to fight once more and this time, it's for Remnant
Crossover - Halo & RWBY - Rated: T - English - Adventure - Chapters: 3 - Words: 12,736 - Reviews: 37 - Favs: 158 - Follows: 231 - Updated: 8/28 - Published: 3/23 - Master Chief/John-117, Team RWBY, Oscar P., Ozma
Rise of Leviathan by
BlackAdder42 reviews
"In the end, it isn't hope that called out to me. Not the desire for someone to save them, to give them mercy. I failed at that once, and would never be able to answer that call. It was vengeance. The simple human need to make sure that whoever hurt you, whoever hurt those you love, will never be able to do so again. To ensure that even should you die, that your enemies would too."
Crossover - Halo & Kantai Collection - Rated: M - English - Supernatural/Sci-Fi - Chapters: 25 - Words: 107,993 - Reviews: 240 - Favs: 567 - Follows: 708 - Updated: 8/22 - Published: 11/13/2016
Lost in time by
Tammazzu reviews
After being sent back to Hell by Doctor Samuel Hayden, The Doom Slayer starts a new crusade with the objective of retrieving the Crucible in order to avoid a direct invasion of hell on Earth. He finally finds a way out but something goes wrong. The good news is that he arrived on Earth...the bad one is that he arrived a few centuries early. Rated M because it's Doom
Crossover - Inuyasha & Doom - Rated: M - English - Adventure/Supernatural - Chapters: 2 - Words: 13,829 - Reviews: 10 - Favs: 33 - Follows: 51 - Updated: 8/21 - Published: 6/30 - Inuyasha, Kagome H., Sango, Doomguy
Slayers by
BakaOniisan reviews
Doom Slayer got tricked by the demons again and is sent to another world where he meets Goblin Slayer and his Party. He decide to search for the portal to Hell that sent him there and destroy it once he's back in Hell. The only clue he got is the weakest monsters that bow down to anyone stronger, like demons from Hell... His only clue are Goblins. Two slayers together for a quest!
Crossover - Doom & Goblin Slayer/ゴブリンスレイヤー - Rated: M - English - Adventure/Fantasy - Chapters: 10 - Words: 34,792 - Reviews: 335 - Favs: 740 - Follows: 949 - Updated: 8/21 - Published: 10/27/2018 - Doomguy
Daily war with monster girls by
Masterdude21 reviews
With the help of the highly-motivated extra-species in the military, mankind holds their own against the brutal onslaught of the Covenant. In their haste to close the gap in space warfare, ONI stumbles upon Relay 314. Even as new enemies arise, the galaxy constantly thwarts Cortana's schemes to build the Master Chief the ultimate harem. Halo/Mass Effect/Monster Musume crossover.
Crossover - Halo & Mass Effect - Rated: M - English - Humor/Romance - Chapters: 22 - Words: 293,980 - Reviews: 790 - Favs: 1,381 - Follows: 1,605 - Updated: 8/18 - Published: 9/20/2016 - Master Chief/John-117, Cortana, Shepard (F)
Into the Black by
IronSaint98 reviews
A single pulse laser shot changed the fate of the UNSC Bismarck and her crew. Twenty-four hundred souls sent adrift through realities. Arriving in a no name system without any idea of where or when they are it is up to their Captain to see them to calm waters. But fate does not like to be denied, and their actions will have consequences.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Fantasy - Chapters: 5 - Words: 16,197 - Reviews: 47 - Favs: 116 - Follows: 170 - Updated: 8/17 - Published: 6/22
Eternal DooM by
Hyst3r1a reviews
"Why are you here? What you interfere with now, is bigger than you can imagine. If you continue, you will bring down the Heaven's Wrath. It is written. It is their time to give penance. You are but one man. They are no longer your people to save."
Crossover - Doom & High School DxD/ハイスクールD×D - Rated: M - English - Horror/Tragedy - Chapters: 3 - Words: 3,176 - Reviews: 26 - Favs: 61 - Follows: 89 - Updated: 8/11 - Published: 6/10 - Doomguy, H. Issei, Rias G.
Grave Effect by
SaibotReaper Productions reviews
Devils and Gods are two halves of the same whole. Life is sown by those whom many would consider gods but the created revolt and destroy their godly creators only to create in their wake the devils who would destroy what they themselves sought to call their own, but can devils rise to create once more or will the cycle of revolt continue on in a new galaxy.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 9,897 - Reviews: 23 - Favs: 106 - Follows: 154 - Updated: 8/11 - Published: 7/27 - Gravemind, 2401 Penitent Tangent, Shepard (F), Leviathan
Spectrum of War by
Mkchief34 reviews
The Republic and the Separatist Alliance are vying to take control of a seemingly uninhabited world on the very edge of Wild Space. However, neither side knows this world is actually overseen by the UNSC and the Swords of Sanghelios. Now all sides face the possibility of having the residents of the Milky Way as allies...or enemies. Set after Halo 5 and in Season 2 of Clone Wars.
Crossover - Halo & Star Wars: The Clone Wars - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 6,181 - Reviews: 30 - Favs: 153 - Follows: 226 - Updated: 8/8 - Published: 6/5 - T. Lasky, OC, Ahsoka T., Anakin S.
Mass Effect demi humans by
EclipsePheniox reviews
Long ago on earth demi-humans appeared on earth. Now expanding into the galaxy the other races have to deal with both humans and demi-humans. Mass effect story from beginning to end but with monster people to make it more interesting. Experimental, possible harem
Crossover - Mass Effect & Monster Girl Encyclopedia - Rated: M - English - Adventure/Sci-Fi - Chapters: 2 - Words: 6,839 - Reviews: 9 - Favs: 37 - Follows: 38 - Updated: 8/8 - Published: 8/2
Freedom's Ring by
DFMRCV reviews
A cruel and unforgiving world, an enemy of unclear origin hellbent on finishing a war of extermination, its victims and their desperate attempts at resisting proving just as futile as the hopes of the men who led them. Many died and would continue to die, none of them doubted that reality. But what if...
Crossover - Attack on Titan/進撃の巨人 & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: T - English - Mystery/Sci-Fi - Chapters: 3 - Words: 63,245 - Reviews: 51 - Favs: 95 - Follows: 116 - Updated: 8/7 - Published: 6/26 - Eren Y., Ilse L., Levi A., OC
For Earth and All Her Colonies by
GADPELLAEON reviews
Post Human-Covenant War AU. After the Great War, all the UNSC wants to do is rebuild and live in the peace. A peace that so many died for. What happens when they learn that no matter what, war will always find them. Chapters Updated - Chapter 11 uploaded (07/08/2019) Any criticism and/or tips welcome.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 11 - Words: 73,828 - Reviews: 368 - Favs: 881 - Follows: 1,303 - Updated: 8/7 - Published: 12/27/2018 - Master Chief/John-117, Arbiter, Shepard (F), Councilor Tevos
gods and demons by
odstpilot reviews
"You want to know why we're so brutal, Captain? When faced with extinction, every other alternative is preferable!" The Shadow of Intent holding master chief, Arbiter, Cortana, and Sgt Johnson, fails to escape the destruction of the installation 04B. They find themselves next to an unknown space station, and what is this federation?
Crossover - Halo & StarTrek: Deep Space Nine - Rated: T - English - Chapters: 7 - Words: 15,491 - Reviews: 25 - Favs: 53 - Follows: 74 - Updated: 8/5 - Published: 7/16 - [Cortana, Master Chief/John-117] B. Sisko, Arbiter
The Rise of the DOOM Hero by
aDOOMotaku reviews
When the sky split open and demons poured out yet again, something more came out of the fracture... He massacred the amassing horde Those who stood in his way were ripped and torn Those who tasted his wrath named him... the Doom slayer.
Crossover - Doom & Rising of the Shield Hero/盾の勇者の成り上がり - Rated: M - English - Sci-Fi/Fantasy - Chapters: 6 - Words: 8,382 - Reviews: 93 - Favs: 234 - Follows: 324 - Updated: 8/4 - Published: 2/15 - Doomguy
Monster Among Monsters by
Exoholix reviews
After a nasty jump through timespace, an alternate world where monsters live among humans, is not something the Unchained Predator would expect to land in. But there may be a reason as to why he was sent here in the first place. Nevertheless, he will rip and tear, until it is done. Warning: Blood and Violence(It's a Doom crossover, what do you expect?)
Crossover - Daily Life with a Monster Girl/モンスター娘のいる日常 & Doom - Rated: M - English - Supernatural/Sci-Fi - Chapters: 5 - Words: 21,023 - Reviews: 70 - Favs: 158 - Follows: 214 - Updated: 7/31 - Published: 5/30
Halo: Remnants by
ParkertheAceMan42 reviews
With the discovery of the Janus Key during the Battle of Requiem. The UNSC Infinity, and the Swords of Sanghelios embark on a expedition to a Forerunner planet designated as "Palieka." But soon discover a world where magic and science co-exist with one another. While Teams RWBY, and JNPR find strangers in the Emerald Forest. Who are they?
Crossover - Halo & RWBY - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 20,737 - Reviews: 48 - Favs: 108 - Follows: 141 - Updated: 7/28 - Published: 6/18 - Master Chief/John-117, G. Thorne, Team RWBY, Team JNPR
Adeptum Effectus by
Reddevel360 reviews
"Killing a man will harden you. Fighting a war against genocide will harden a species. Why are we so ruthless Councilor? Because when fighting for your very existence, anything is acceptable." - Lord Hood. Featuring a Humanity that discovered the archives on Mars in the midst of fighting an war for their very survival, a war that destined to be a massacre turns into a stalemate.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Tragedy - Chapters: 4 - Words: 28,690 - Reviews: 119 - Favs: 673 - Follows: 978 - Updated: 7/28 - Published: 5/10 - Master Chief/John-117, T. Hood, Shepard (F), Admiral Hackett
The Grave Effect by
SaibotReaper Productions reviews
Following the destruction of The Covenant Empire and Truth, The Gravemind had one last trick up it's sleeve for survival fusing it's entire consciousness with a human host ensuring it's survival. Now a lone marine and The Gravemind venture out beyond the galaxy they once knew to a somewhat familiar yet strange galaxy that is brimming with new possibilities. (On Hiatus)
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 23 - Words: 91,107 - Reviews: 135 - Favs: 283 - Follows: 366 - Updated: 7/27 - Published: 5/16/2017 - Gravemind, OC, Shepard (F), Garrus V.
Doom awaits Remnant Revised by
BigJohn68 reviews
This a Revised, Hopefully better story of Doom awaits Remnant. Light M rating now will get heavier done the road.
Crossover - Doom & RWBY - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 1,280 - Reviews: 5 - Favs: 5 - Follows: 14 - Published: 7/25
Roses Born of Dust by
TallYapflip reviews
An ONI Prowler is sent to a small system on the Southern fringes of UNSC space, just along the border with the Sangheili, to investigate strange signals coming from a planet within. He encounters strange situations, strange people, and the strangest world in the galaxy. [White Rose & Bumblebee. Rated "M" For later.] (All Re-writes complete)
Crossover - Halo & RWBY - Rated: M - English - Sci-Fi/Romance - Chapters: 39 - Words: 214,555 - Reviews: 422 - Favs: 585 - Follows: 665 - Updated: 7/13 - Published: 10/26/2015 - [Weiss S., Ruby R.] [OC, Winter S.]
Enduring the Flames of War by
Masterdude21 reviews
A joint Asari-Turian operation salvaged a "package" from a derelict wreckage in the Terminus Systems, whereupon they release a force of war beyond their reckoning. Hoping to avoid another war, Commander Shepard recruits the "package" into her team. A simple act of kindness, unwittingly paving the way for a clash unlike the galaxy has ever seen. Fate directs the flames of war.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Horror - Chapters: 32 - Words: 452,176 - Reviews: 1657 - Favs: 2,439 - Follows: 3,104 - Updated: 7/12 - Published: 11/30/2015 - Master Chief/John-117, OC, Shepard (F)
Spartan of Bonyari by
UltimateCaptain65 reviews
The Master Chief sacrificed himself to save humanity from Didact but at what cost, he lost his companion, his good friend companion, Cortana. He thought that he was dead until by some unknown force, he was sent back to the past. There the Spartan awakens to a different 21st Century Earth. How would his presence affect everyone? What will the Spartan do?
Crossover - Halo & Nisekoi/ニセコイ - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 11,137 - Reviews: 14 - Favs: 34 - Follows: 54 - Updated: 7/9 - Published: 7/6 - Master Chief/John-117, K. Onodera
From the Abyss of the Heart by
The Eternal Lord Draconious reviews
In a desperate attempt to avoid oblivion, Lila Barton makes a deal with the Abyss. In exchange she is reshaped and remolded into a vessel of war. There are things in the deep which should never be bargained with, and as the Endgame draws near, Lila finds it harder to control herself. Can she keep her other half under control or will the world burn under a rain of battleship fire?
Crossover - Avengers & Kantai Collection - Rated: M - English - Adventure/Family - Chapters: 5 - Words: 22,527 - Reviews: 7 - Favs: 19 - Follows: 30 - Updated: 7/6 - Published: 5/25
Louise Summons Raphtalia by
y1fellas reviews
What it says on the tin. She was cuter as a kid anyway.
Crossover - Familiar of Zero & Rising of the Shield Hero/盾の勇者の成り上がり - Rated: K - English - Adventure - Chapters: 28 - Words: 42,794 - Reviews: 212 - Favs: 369 - Follows: 513 - Updated: 7/5 - Published: 6/1 - Louise, Raphtalia
GATE: Of Dragons and a Spirit of Fire by
Pkd reviews
Few years after the events of Halo Wars, the UNSC Spirit of Fire finds themselves above the orbit of a unknown world without any clue to where they are and what brought them here. Faced with a new obstacle the crew of the Spirit of Fire descends upon the world where they meet new allies and enemies, along with an relic of the past, as they try to find a way back home.
Crossover - Halo & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: T - English - Adventure/Fantasy - Chapters: 18 - Words: 43,150 - Reviews: 286 - Favs: 612 - Follows: 812 - Updated: 7/2 - Published: 1/26/2018 - J. Cutter, E. Anders, OC, Third Recon
A Stranded Slayer by
Dao Ma reviews
What if, by chance, the two Slayers met? The Slayers of Demons and the Slayers of Goblins, what will happen to the world? What will happen to the Demons of this world now that the Unchained Predator, the Hell Walker—the Doom Slayer himself is here? And what will the Goblins do now that there is another Slayer manifested right in front of them? - English is not my native language.
Crossover - Doom & Goblin Slayer/ゴブリンスレイヤー - Rated: M - English - Fantasy - Chapters: 2 - Words: 1,782 - Reviews: 12 - Favs: 37 - Follows: 52 - Updated: 6/29 - Published: 6/24 - Doomguy
Legend of the radiation shield by
TechManuel reviews
One day the Lone wanderer was exploring the ruins of the Library of Congress when he came across a strange book. upon reading said book he was transported to whole new world. now he must save it from certain destruction, even if the people who live there want him dead.
Crossover - Rising of the Shield Hero/盾の勇者の成り上がり & Fallout - Rated: T - English - Adventure/Fantasy - Chapters: 8 - Words: 19,339 - Reviews: 67 - Favs: 231 - Follows: 291 - Updated: 6/28 - Published: 5/10
Their Rise to Become Heroes (Story Rewritten Sorry) by
Phanzuru reviews
They say heroes always began with a tragic past. A past that influenced their lives to become greater than others in the world. With that past, they tread the world to make sure that the world becomes a better place. If that is so, then when do the nobody's become heroes? Jaune, left by his friends, will befriend a lost demi-human, who has nowhere else to go. AU, so don't hurt me.
Crossover - RWBY & Rising of the Shield Hero/盾の勇者の成り上がり - Rated: T - English - Adventure/Romance - Chapters: 23 - Words: 61,346 - Reviews: 138 - Favs: 363 - Follows: 413 - Updated: 6/23 - Published: 2/24 - Jaune A., Raphtalia
The Leviathan and The Relic by
Ludum reviews
The fleeing refugees of the 12 Colonies encounter the UNSC Infinity. It seems that their problems are over as the UNSC can easily steamroll the Cylons with just this one ship. But what if the Cylons knew of a weapon that can wipe out all humanity more efficiently than nuclear bombardment of 12 planets?
Crossover - Halo & Battlestar Galactica: 2003 - Rated: T - English - Chapters: 1 - Words: 4,768 - Reviews: 39 - Favs: 106 - Follows: 166 - Published: 6/23
No Fortunate Ones:The Gallian-Imperial War by
Johnnieboy11 reviews
Escaping the madness that was Reach during its final hours, a wounded Noble Six and her compatriots, now stuck on a Covenant Corvette with no FTL, find themselves in the middle of a war for dominance between human factions, with a neutral country stuck in the middle of a conflict they didn't want no part of. Another Day, Another War
Crossover - Halo & Valkyria Chronicles - Rated: M - English - Sci-Fi/Romance - Chapters: 3 - Words: 9,323 - Reviews: 11 - Favs: 44 - Follows: 51 - Updated: 6/20 - Published: 11/10/2018 - [Alicia M., Welkin G.] SPARTAN-B312/Noble Six, OC
Above and Beyond by
Johnnieboy11 reviews
Exploration and the discovery of new Forerunner ruins and technologies was the Infinity's and Shadow of Intent's newest goal. On one such trip, hunting through uncharted Galactic space for a piece of technology hinted at by a Forerunner Archive, the Infinity and Shadow get mistakenly transported to a realm unknown to them. A universe similar, yet different to their own...
Crossover - Halo & Sunrider - Rated: M - English - Sci-Fi/Romance - Chapters: 3 - Words: 15,702 - Reviews: 8 - Favs: 22 - Follows: 29 - Updated: 5/24 - Published: 5/20
Operation GALAXY:The Spartan of the Republic by
Johnnieboy11 reviews
After the destruction of Reach and his days-long resistance upon the dying world, Noble Six wakes, alone, but armed to the teeth, in a Galaxy Far, Far Away... Under attack from unknown enemies, the Spartan will be faced with tough choices as he fights to help a Republic beset by war in a world he remembers faintly.
Crossover - Halo & Star Wars: The Clone Wars - Rated: T - English - Romance/Sci-Fi - Chapters: 2 - Words: 5,694 - Reviews: 26 - Favs: 111 - Follows: 174 - Updated: 5/7 - Published: 4/16 - SPARTAN-B312/Noble Six, Ahsoka T., Anakin S., Captain Rex
The Forerunner's Blessings by
Venerance reviews
Adrift in space. The occupants of the Forward Unto Dawn found themselves learning more about the universe than they ever hoped to imagine. An entire cabal of alien civilizations residing among the stars, waiting to be introduced to Humanity and her allies.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 5,339 - Reviews: 79 - Favs: 283 - Follows: 488 - Updated: 5/3 - Published: 3/31 - [Master Chief/John-117, Shepard (F)] A. J. Johnson, Cortana
Rise of the Noble Knight by
Johnnieboy11 reviews
In spite of death on the planet Reach, Noble Six awakens to a new world facing imminent destruction from the outside monstrosities of magic known as Waves of Calamity and from the inside, by rule of a damned King and his daughter. With political intrigue, falsehood of Rumors and death in front of him again, will Noble Six survive the oncoming war, or will he die like all others?
Crossover - Halo & Rising of the Shield Hero/盾の勇者の成り上がり - Rated: M - English - Chapters: 3 - Words: 9,828 - Reviews: 30 - Favs: 195 - Follows: 263 - Updated: 3/17 - Published: 3/9 - [SPARTAN-B312/Noble Six, OC] [Raphtalia, Naofumi I.]
Kill the Winged Globe! by
Coldblizzard25 reviews
"I've spent four and a half years in the Corps. Four and a half years of fighting these Covenant freaks... Four and a half years, seeing men... seeing brothers and sisters get killed... Four and a half years... wishing that this whole thing blows over soon. Then Shit Happened... Another world is out there... And we're in its war..." -Sgt. Ryan Irons.
Crossover - Halo & Akame ga Kiru/アカメが斬る - Rated: M - English - Adventure/Fantasy - Chapters: 1 - Words: 5,188 - Reviews: 2 - Favs: 13 - Follows: 17 - Published: 2/25 - [OC, Sheele] T. Lasky, Akame
The Path Home: A Star Wars Story by
kpmh2001 reviews
After being stranded in a galaxy far far away, team RWBY finds themselves on a mission to get back home whilst meeting new people and visiting exciting new worlds.
Crossover - Star Wars & RWBY - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 21,482 - Reviews: 29 - Favs: 74 - Follows: 106 - Updated: 2/16 - Published: 11/25/2018
An Abyssal Fate (RWBY Kancolle Crossover AU) by
MegaElite reviews
On the night Ruby attempted to arrest Roman, she thought she was just going to capture the bad guy and then see Yang off to Beacon. Unfortunately, the chase has a different outcome and far reaching consequences. Now Ruby will rise from the Abyss and make her mark upon the world of Remnant with new and terrifying powers.
Crossover - RWBY & Kantai Collection - Rated: M - English - Supernatural/Spiritual - Chapters: 8 - Words: 10,262 - Reviews: 16 - Favs: 73 - Follows: 104 - Updated: 2/16 - Published: 1/8
The Unknown Defender by
Gabenator5 reviews
While Shepard is closing in on Saren. Stories begin to spread among the pirates and slavers of the galaxy. Rumors of a nameless fear, of a creature, a demon wreathed in green armor. It and its allies appear from nowhere slughtering all who oppose them, then vanish without a trace. What is the purpose of this unknown faction... and what will they do next?
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 17 - Words: 115,734 - Reviews: 1007 - Favs: 2,635 - Follows: 3,447 - Updated: 1/13 - Published: 9/27/2016 - Master Chief/John-117, Cortana, Shepard (F), Tali'Zorah
Devil Incarnate by
Jack555RIPper reviews
"Everyone's got their thing. Maybe it's a break up. A death. An accident. Whatever it is, you used to be one thing, and now you're something else. We all have our own problems, our own issues. Our own Demons."
Crossover - Goblin Slayer/ゴブリンスレイヤー & Venom - Rated: M - English - Horror/Fantasy - Chapters: 2 - Words: 18,911 - Reviews: 115 - Favs: 326 - Follows: 399 - Updated: 10/27/2018 - Published: 10/17/2018
Salvation by
InTheZ0n3 reviews
The Knowledge of sin is the beginning of Salvation. Über 40 Jahre nach dem Ende des Krieges gegen die Allianz, zieht ein neuer Sturm am Rande des menschlichen Reiches auf. Werden die Kolonien des Linwood Sektors diesen standhalten können oder werden sie brennen wie einst Harvest?
Crossover - Halo & Mass Effect - Rated: M - German - Sci-Fi/Adventure - Chapters: 9 - Words: 59,872 - Reviews: 7 - Favs: 9 - Follows: 18 - Updated: 9/4/2018 - Published: 10/3/2016 - T. Hood, Councilor Tevos
UNSC Ga Kill! by
i4md347h reviews
After escaping with his life from the Ark, Master Chief, Cortana, and the crew of Forward Onto Dawn opened a slipspace portal to parts unknown, and the destination scrambled during the chaos. After scaping through the breach, the entire crew found themselves in a world, pristine from a glance. Yet the darkness it holds will defy everything they've known... Rated T for now.
Crossover - Halo & Akame ga Kiru/アカメが斬る - Rated: T - English - Adventure/Fantasy - Chapters: 3 - Words: 12,700 - Reviews: 23 - Favs: 90 - Follows: 105 - Updated: 8/11/2018 - Published: 8/10/2018 - Master Chief/John-117, Arbiter, Night Raid
Remnants of a Spartan by
playererror404 reviews
Noble Six thought her life was over, she thought she Reach was gonna be her last stand. She was wrong, now she's fighting monsters with super powered teenagers... On top of that she's younger and has no clue whats going on.
Crossover - Halo & RWBY - Rated: T - English - Adventure - Chapters: 115 - Words: 296,202 - Reviews: 501 - Favs: 333 - Follows: 337 - Updated: 6/28/2018 - Published: 11/17/2017 - SPARTAN-B312/Noble Six, Team RWBY, Team CFVY - Complete
GATE: Making my mark in this other world! by
Kyuubi gear reviews
After the day of the hunt in Special Region, A very drunk Kobayashi finds a dragon named Tohru and takes her in to stay at her friends house. Only to find out that she didn't come alone, And has her friends stay with them as well. But when it looks like all is well, A gate appears in the city and all hell breaks loose. It looks like things won't be normal at all.
Crossover - Gate - Jietai Kare no Chi nite, Kaku Tatakeri & Miss Kobayashi's Dragon Maid/小林さんちのメイドラゴン - Rated: M - English - Adventure/Fantasy - Chapters: 13 - Words: 77,280 - Reviews: 37 - Favs: 62 - Follows: 65 - Updated: 6/27/2018 - Published: 4/29/2017 - OC
Overlord Effect by
oblivon2991 reviews
With the arrival of the Shinigami and his enforcer came hardship. With hardship came equality. With careful planning came advancement. With advancement, the civilization thrived. And when a fantasy based civilization met an another one? What's then? What happens when the Sorcerer Kingdom met the galactic community? The Reapers? (AU with a lot of OC'S! Beware! XD) HIATUS until fn.
Crossover - Mass Effect & Overlord/オーバーロード - Rated: T - English - Sci-Fi/Fantasy - Chapters: 10 - Words: 156,126 - Reviews: 340 - Favs: 668 - Follows: 796 - Updated: 2/17/2018 - Published: 3/21/2017
Battlestar Galactica: The Guiding Fire by
GunnyStacker reviews
199 days after the Cylon attack on the 12 Colonies, a chance encounter brings the Colonial Fleet in contact with the UNSC Spirit of Fire after the events of the Forerunner Shield World. Can they work together to reach UNSC space before the Cylons wipe them all out and manage to overcome the odds without killing each other first?
Crossover - Halo & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi/Drama - Chapters: 13 - Words: 157,922 - Reviews: 529 - Favs: 823 - Follows: 1,090 - Updated: 2/2/2018 - Published: 11/13/2016 - J. Cutter, Serina, W. Adama, K. Thrace/Starbuck
Glasslands to Swamplands by
Codename-SURGEON reviews
The colony world of Mesa is a glassed wasteland. Operators of the Liang-Dortmund Corporation work year after year to make the planet livable again through hellish conditions. Then, an assault on a isolated outpost by a technologically inferior force leads to casualties and a disruptive investigation of a connection between worlds.
Crossover - Halo & Witcher - Rated: M - English - Sci-Fi/Fantasy - Chapters: 3 - Words: 22,799 - Reviews: 28 - Favs: 36 - Follows: 57 - Updated: 12/24/2017 - Published: 11/20/2016
And so the Soviets Conquered by
Vengeful Soldier reviews
At the height of the Union's Power a gate mysteriously appears in Kiev, unleashing a torrent of invaders killing and maiming all in their path. Now that the Bear has awoken from its uneasy slumber, nothing will stop its fury.
Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: M - English - Fantasy/Adventure - Chapters: 16 - Words: 171,415 - Reviews: 415 - Favs: 454 - Follows: 514 - Updated: 11/30/2017 - Published: 12/27/2015
The Knight and Fairy of the Forward Unto Dawn by
Truce D Jee reviews
What if they never stranded in space and met the Didact. Instead, they landed in the North. How will the lords and kings deal with this mighty warrior from the stars? Join Master Chief and Cortana as they turn the cold, backward region into the most advance kingdom in the World of Ice and Fire. (M for profanity and gore)
Crossover - Halo & Game of Thrones - Rated: M - English - Adventure/Sci-Fi - Chapters: 11 - Words: 63,235 - Reviews: 667 - Favs: 1,484 - Follows: 1,774 - Updated: 8/29/2017 - Published: 12/18/2016
The Next Great Journey by
alanvaladez reviews
After the destruction of Requiem and an attack against Earth, both the UNSC and Covenant Separatist form the Systems Alliance. Then a discovery in the Deca-5 system changes everything for all sides. Cold War like conflict, lots of ONI , AU for Mass Effect and a council that actually thinks before it acts.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Drama - Chapters: 19 - Words: 150,316 - Reviews: 197 - Favs: 465 - Follows: 499 - Updated: 10/30/2016 - Published: 9/8/2014 - Master Chief/John-117, OC, Saren A., OC - Complete
A Certain Scientific Familiar by
Ketchum Kid reviews
Louise wanted a beautiful and wise familiar. What she got was a walking power plant with no patience for disrespect to anyone. In a world where nobles and magic rule and espers and science are non-existent, can the Zero of Tristain cope with having a familiar that is the Ace of Tokiwadai?
Crossover - Familiar of Zero & Toaru Majutsu no Index/とある魔術の禁書目録 - Rated: T - English - Fantasy/Sci-Fi - Chapters: 15 - Words: 117,908 - Reviews: 362 - Favs: 775 - Follows: 980 - Updated: 7/19/2016 - Published: 12/1/2013 - Louise, Mikoto M.