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RWBY:Spartan Assault by
Johnnieboy11 reviews
After John-117's battle on board Mantle's Approach, the Spartan finds himself, with Cortana in tow, sent to a different world, where monsters roam the wilds, Humanity is confined to 4 major Kingdoms and where Magic and Tech coexist. The Spartan will soon have to join the ranks of the good guys against a horrid threat, whilst also on the lookout for fellow Spartans.
Crossover - Halo & RWBY - Rated: M - English - Romance/Sci-Fi - Chapters: 52 - Words: 181,211 - Reviews: 204 - Favs: 316 - Follows: 393 - Updated: 9/8 - Published: 7/8/2018 - Master Chief/John-117, Cortana, Team RWBY, Team JNPR
The Spartan Crew Member by
Daisy Rhine reviews
Commander Shepard and his crew find the other half of the ship that MC is on. When they find him they have no idea what they should expect but an chemically suped up human was not one of them. I don't own Halo or Mass Effect 343industries and BioWare do.
Crossover - Halo & Mass Effect - Rated: T - English - Friendship/Adventure - Chapters: 35 - Words: 71,467 - Reviews: 201 - Favs: 302 - Follows: 411 - Updated: 8/30 - Published: 8/14/2017 - Master Chief/John-117, Garrus V., Tali'Zorah, Shepard (M)
Ashes on the Water by
DasCheesenborgir reviews
With the fabled Dragonborn disappearing to parts unknown following her victory over Alduin, a quiet disturbance in the northern ice fields goes undiscovered amidst the many turmoils still ravaging Skyrim. The otherworldly, lost soul that is left behind in the Sea of Ghosts is ill-needed by a province already on the precipice of destroying itself.
Crossover - Warhammer & Elder Scroll series - Rated: T - English - Chapters: 13 - Words: 29,967 - Reviews: 13 - Favs: 14 - Follows: 33 - Updated: 8/25 - Published: 11/12/2018 - Serana
The Wayward Son by
Angelus Titanus reviews
Specially chosen by the Ordo Malleus to help hunt down the leader of a warband of Emperor's Children, Kill Team Calamity of the Deathwatch encounter way more than they were counting on. Between Heretics, the Inquisition, Eldar, Dark Eldar, and Chaos one Blood Raven librarian has his faith truly tested in the midst of heresy and temptation in the 13th Black Crusade.
Warhammer - Rated: M - English - Adventure/Romance - Chapters: 19 - Words: 246,760 - Reviews: 142 - Favs: 117 - Follows: 154 - Updated: 8/24 - Published: 8/5/2017 - Dark Eldar, Imperial Guard, Inquisition, Space Marines
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: 3 - Words: 16,476 - Reviews: 54 - Favs: 192 - Follows: 278 - Updated: 7/29 - Published: 5/16 - Master Chief/John-117
Emperor Protects by
ArizonaRanger057 reviews
He was thought to have been lost to the Grimm on that fateful night, a boy lost to the darkness to never be returned, but would anyone even recognize him if he did? "My armor is contempt, My shield is disgust, My sword is hatred, In the emperors' name, let none survive."
Crossover - Warhammer & RWBY - Rated: M - English - Sci-Fi/Adventure - Chapters: 8 - Words: 16,890 - Reviews: 59 - Favs: 232 - Follows: 314 - Updated: 7/20 - Published: 10/6/2018 - Ruby R., Weiss S., Jaune A.
Exitus Acta Probat by
TwinkieMain reviews
Centuries of conflict takes its toll on Eostia, leaving little to be resolved by the Goddess Reincarnate, Celestine Lucross. Without an endgame in sight, hopelessness begins to fall on the people of the tired country. However, no one foresaw the arrival of an unknown party, who all come from beyond the stars themselves. None of them ever foresaw the fiery phoenix that was the UNSC.
Crossover - Halo & Kuroinu: Kedakaki Seijo wa Hakudaku ni Somaru - Rated: M - English - Sci-Fi/Fantasy - Chapters: 5 - Words: 54,510 - Reviews: 176 - Favs: 420 - Follows: 533 - Updated: 6/15 - Published: 11/27/2017 - J. Cutter, Douglas-042, Maia, Cellestine L
Days for the Lost by
Superemopowerz reviews
Spartan-008 should have been dead. No one could have survived a slip-space anomaly. Now thrust into a new world; where humanity is slowly dying from the undead and not from the Covenant. Li-008 must do whatever it takes to survive in this new hell. Well, there is one thing Spartans never die, they just go missing in action.
Crossover - Halo & Walking Dead - Rated: M - English - Sci-Fi/Adventure - Chapters: 7 - Words: 46,054 - Reviews: 68 - Favs: 204 - Follows: 253 - Updated: 5/25 - Published: 1/11/2017 - Li-008
Inquisitor's Hunter by
IronSaint98 reviews
An Inquisitor's purpose is to seek out the heretic, the xenos, and the mutant in the Emperor's name. Giving their last in the service of the Golden Throne. A Spartan's single duty is the defense of Humanity. In the grim darkness of the 41st millennium the Dark Gods howl in frustration as pure and faithful souls stand between them and the worlds of the Imperium. Ave Imperator.
Crossover - Warhammer & Halo - Rated: M - English - Horror/Adventure - Chapters: 10 - Words: 26,108 - Reviews: 67 - Favs: 175 - Follows: 236 - Updated: 2/18 - Published: 3/2/2018
Monster Girl Quest: Shadow of Undeath by
The Inexplicable Presence reviews
Vaskul, an ancient demilich, searches for the long lost Emperor of Hell to learn the Secret of Evolution so that he may become God. Along the way, he finds the newly formed world of MGQ, and finds himself setting in motion a chain of events that he quickly finds to be out of his control. Can Vaskul find the Emperor? Or will the war between Alice XVI and Ilias stop him?
Crossover - Dungeons and Dragons & Monster Girl Quest - Rated: M - English - Chapters: 9 - Words: 94,430 - Reviews: 33 - Favs: 42 - Follows: 51 - Updated: 2/17 - Published: 7/25/2017
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: 1011 - Favs: 2,645 - Follows: 3,456 - Updated: 1/13 - Published: 9/27/2016 - Master Chief/John-117, Cortana, Shepard (F), Tali'Zorah
What Do You Mean By, Dragonborn? by
Eternal War reviews
A warrior, no matter what happens to their mind, still remembers how to perform on a fundamental level, how to rely passively upon their base instincts. A solider, on the other-hand passively forgoes basic instinct and commits logic to their performance. It takes great strength to keep your head about you, yeah? Well, what about a person, who could claim to be both?
Crossover - Warhammer & Elder Scroll series - Rated: M - English - Adventure/Fantasy - Chapters: 6 - Words: 32,296 - Reviews: 28 - Favs: 44 - Follows: 71 - Updated: 12/22/2018 - Published: 8/3/2018 - OC
The Great Flood by
Soul's Release reviews
When a warrior falls from the stars and accidentally brings with him a scourge of immeasurable danger, Ruby Rose and her fellow classmates must band together in order to survive the newest threat to ALL life on Remnant.
Crossover - Halo & RWBY - Rated: T - English - Sci-Fi/Horror - Chapters: 3 - Words: 10,905 - Reviews: 34 - Favs: 55 - Follows: 84 - Updated: 10/24/2018 - Published: 6/29/2018 - Master Chief/John-117, Cortana, Team RWBY, Team JNPR
The World Could Always Use More Heroes by
mcknight93 reviews
After facing Cortana again, the Master Chief finds himself thrown in an unknown city. The city itself had been attacked, but the Chief still moves ahead to rendezvous with Blue Team. Hoping to get a better idea of his situation, he comes across a variety of colorful characters. Some of them bring up the name of Overwatch.
Crossover - Halo & Overwatch - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 14,225 - Reviews: 29 - Favs: 102 - Follows: 140 - Updated: 10/1/2018 - Published: 9/23/2018 - Master Chief/John-117, J. Fawkes/Junkrat, Mako R./Roadhog
A Scream of Ice and Hellfire by
AjaxByTheSea reviews
Grommash Hellscream redeemed himself with the ultimate sacrifice, freeing not only himself but also his people from the corruption of the Buring Legion. However, the demon pit lord, Mannoroth, is not one to accept defeat so easily, casting Grommash's soul away from Azeroth and sending him to a new world. His long journey is only beginning...
Crossover - Warcraft & A song of Ice and Fire - Rated: M - English - Fantasy/Adventure - Chapters: 4 - Words: 19,008 - Reviews: 30 - Favs: 126 - Follows: 184 - Updated: 8/26/2018 - Published: 8/5/2018
Commonwealth's Genesis by
DwemerSteelBlade reviews
SPARTAN-D053 was on his way to a Covenant-controlled colony world when a slipspace bomb goes off. Lost in the wasteland, with nothing but his armor and wits, he must learn to accept this new world. (Rated M for drugs, swearing, and some other stuff.)
Crossover - Fallout & Halo - Rated: M - English - Family - Chapters: 5 - Words: 7,495 - Reviews: 4 - Favs: 24 - Follows: 31 - Updated: 8/18/2018 - Published: 7/16/2018
Young Astartes by
FADM. Nova OfTheWhiteShipOrder reviews
When a blood claw of the space wolves is torn from the defense of Caida and crashes into middle of a hostage situation in Gotham city, how will the dc universe react to this trans-human warrior of the far future? can the son of Russ adapt who knows? prototype story criticisms wanted chapter one rewrite status on hiatus
Crossover - Warhammer & Young Justice - Rated: M - English - Adventure - Chapters: 1 - Words: 220 - Reviews: 7 - Favs: 13 - Follows: 19 - Published: 8/13/2018
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: 91 - Follows: 106 - Updated: 8/11/2018 - Published: 8/10/2018 - Master Chief/John-117, Arbiter, Night Raid
Abandon - Wayward Son by
John Jay Black
A lone Space Marine, separated from his forlorn Legion-battalion, makes his way across the hostile surface of Tallern.
Warhammer - Rated: T - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 666 - Favs: 2 - Follows: 1 - Published: 7/1/2018
Grey Spartan (rewrite) by
IronSaint98 reviews
An ODST fire team and a Spartan-III are caught in a slipspace rupture and immediately are thrown into a war similar, but different to the one they were born to fight. Can a team of Helljumpers and a Demon make a difference...or are they just another statistic?
Crossover - Halo & Star Wars - Rated: M - English - Adventure/Humor - Chapters: 2 - Words: 2,477 - Reviews: 3 - Favs: 9 - Follows: 10 - Updated: 4/15/2018 - Published: 4/6/2018 - OC, Sith W.
Traveller's Light by
Lord Sovereign reviews
Guardians: immortal warriors called back from the dead by the godlike Traveller to protect what is left of Humanity from the enemies that surround its Last City. Their newest inductee is Dimitri Mendevev, a young man slain whilst trying to protect his parents during the Collapse of legend. This is his tale, as he tries to find a place for himself in this new and dangerous world.
Destiny - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 16,296 - Reviews: 5 - Favs: 8 - Follows: 7 - Updated: 3/7/2018 - Published: 12/27/2017
Wings of Fury by
arrek125 reviews
Logios of the Angels Revenant is a by the books, codex compliant Adept of the Astartes. In the purge of a heretic cult upon a planet, Logios is thrust into the Warp, shifting and morphed through its vile powers, and finds himself in a world devoid of the God Emperor's divine light.
Crossover - Warhammer & Wings of Fire, Tui T. Sutherland - Rated: M - English - Adventure - Chapters: 3 - Words: 8,189 - Reviews: 7 - Favs: 11 - Follows: 12 - Published: 2/1/2018
Fraught with Peril: A Halo Mass Effect Story by
A-01 reviews
John was born for war, and even in the wake of defeating the Didact, there will be no respite. Thrust into the Mass Effect Universe he must either find his place or find his way home as his presence brings new hope to Shepard and his campaign against the approaching Reaper armada.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 15 - Words: 151,659 - Reviews: 233 - Favs: 603 - Follows: 811 - Updated: 1/28/2018 - Published: 12/16/2016
The Bulwark of Faith by
SheepyTheSheep reviews
It is the year 302 of the 42nd Millennium and mankind is on the brink of another catastrophic warp storm - another Eye of Terror that seeks to rip the galaxy asunder. The Inquisition has seen fit to send the Grey Knights to quell the daemonic incursion. A group of these Grey Knights are however whisked away by the Emperor's will; into an unfamiliar universe with a familiar enemy.
Crossover - Warhammer & Warcraft - Rated: M - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 4,191 - Reviews: 7 - Favs: 16 - Follows: 38 - Published: 1/25/2018