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The Dark Below by
DarthPeezy reviews
Izuku was never Quirkless. Sometimes, Quirks hide until they are triggered. Izuku died and came back. He gazed into the abyss and it followed him home. Everything he thought he knew about the world is about to change because there are monsters lurking in the dark below. Izuku wonders if he is one of them. Crossposted to Ao3.
My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Adventure/Horror - Chapters: 49 - Words: 417,255 - Reviews: 839 - Favs: 1,387 - Follows: 1,528 - Updated: 7/6 - Published: 5/7/2018 - Izuku M., Toshinori Y./All Might, Shouto T., Fumikage T.
Mythos Effect by
Omniscent1 reviews
A crossover between Mass Effect and Cthulhutech. Humanity has won the Aeon War and has since expanded and thrived. How will the galaxy fare with this new power?
Crossover - Cthulhu Mythos & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 18 - Words: 122,364 - Reviews: 1072 - Favs: 3,018 - Follows: 3,421 - Updated: 4/6 - Published: 6/5/2013 - Shepard (M)
Biomass Effect by
Beastrider9 reviews
All life on Earth had been consumed by Blacklight. With no Biomass to feed on, Blacklight had to evolve, adapt, and grow. Now a collective Council of Aliens discovers the existence of such a life form. How do the aliens see a form of life that is viral, how they deal with it, what are the consequences to the galaxy of such a race existing at all.
Crossover - Mass Effect & Prototype - Rated: M - English - Sci-Fi - Chapters: 59 - Words: 303,766 - Reviews: 2631 - Favs: 3,557 - Follows: 3,990 - Updated: 12/3/2018 - Published: 8/8/2014
A Spartan in Westeros (A Song of Ice and Fire X Halo Crossover) by
Agailius reviews
When the Forward Unto Dawn lands in the North, it sets the stage for untold repercussions which will ripple throughout the whole of Westeros. With civil war threatening to tear the land apart, and an entirely more dire threat arising beyond the Wall, John and Cortana take it upon themselves to again protect the whole of mankind; from both it's own demons... and those beyond.
Crossover - Halo & A song of Ice and Fire - Rated: M - English - Sci-Fi/Fantasy - Chapters: 21 - Words: 128,153 - Reviews: 1565 - Favs: 3,419 - Follows: 4,029 - Updated: 10/1/2018 - Published: 6/3/2014 - Master Chief/John-117, Cortana, Jon S., Eddard S./Ned
Inquisitor Carrow and the Tournament of Tribulations by
littlewhitecat reviews
His plans to insert himself within the guts of the Ministry of Magic have been highly successful, his apprentices are proving to be both talented and intuitive, and his efforts to consolidate his position within the mundane world are proceeding nicely. But as he knows all to well, all plans disintegrate on contact with reality...and what is English Heritage anyway?
Crossover - Harry Potter & Warhammer - Rated: T - English - Humor/Adventure - Chapters: 11 - Words: 143,552 - Reviews: 654 - Favs: 1,385 - Follows: 1,019 - Updated: 6/30/2016 - Published: 7/1/2014 - Complete
Mass Effect: Clash of Civilizations by
Eterna1Soldier reviews
In 2157 a Citadel Council exploratory vessel is tasked with opening a dormant Relay into unknown regions of the galaxy. What they find is something they never expected. What happens when two civilizations centered around different technologies clash?
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Mystery - Chapters: 21 - Words: 96,812 - Reviews: 3394 - Favs: 5,050 - Follows: 5,934 - Updated: 5/22/2016 - Published: 10/13/2011 - Tali'Zorah
The Mission Stays the Same by
Broken Trident reviews
DISCONTINUED. A joke of Chaos daemon sent two unlikely allies - an Eldar Farseer and an Imperial Storm trooper, through the Warp and into another Universe. In this place, everything is alien to them. Except for one thing - war. War is something they know very well.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 20 - Words: 263,964 - Reviews: 1894 - Favs: 3,270 - Follows: 3,403 - Updated: 4/25/2016 - Published: 10/4/2011 - Shepard (F)
Tide of War: Mass Effect Warhammer Crossover by
TheSGC reviews
Warhammer 30k Pre-Heresy and Mass Effect 2 crossover. The 25th Expeditionary Fleet, with the Alpha Legion, is en route to a pacification when something very unexpected happens …
Crossover - Warhammer & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 34 - Words: 82,578 - Reviews: 288 - Favs: 527 - Follows: 690 - Updated: 4/4/2016 - Published: 10/11/2011
Transcendent Humanity by
Solaris242 reviews
Humanity never developed FTL. The Prothean archives contained no technology, no Element Zero, just a warning. Isolated from the rest of the galaxy for two thousand years, restricted to their only system, how will humanity have changed when they first meet the Turians? AU, alternate history of humanity and First Contact.
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 18 - Words: 40,604 - Reviews: 2082 - Favs: 6,465 - Follows: 7,480 - Updated: 3/1/2016 - Published: 5/7/2013
The Great Devourer by
genericname12345 reviews
A tyranid splinter fleet is thrown into the Star Wars galaxy at the dawn of the Clone Wars. Things will never be the same again.
Crossover - Star Wars & Warhammer - Rated: T - English - Sci-Fi/Adventure - Chapters: 10 - Words: 24,634 - Reviews: 143 - Favs: 326 - Follows: 401 - Updated: 10/28/2015 - Published: 6/2/2012
Magic, as opposed to Magic by
The Rev. Cardboard Box reviews
Harry Potter was lost, but now is found. The Arch-Mage isn't happy. Harry isn't happy. And they're just the first two people who are going to find The Boy Who Lived's destiny one immense headache... Completed. It's my "Winnie the Pooh" to my A.A. Milne. (That's NOT a complementary comparison, by the way.)
Crossover - Harry Potter & Elder Scroll series - Rated: T - English - Humor - Chapters: 39 - Words: 100,511 - Reviews: 677 - Favs: 1,397 - Follows: 1,467 - Updated: 6/27/2015 - Published: 3/13/2011 - Complete
A Change of Fate by
DX1998 reviews
While fleeing from the Ori after the death of their alllies, the Odyssey is near destruction. In a desperate bid for surviaval, a future version of Samantha Carter develops a plan to use the power of the Ori beam to save the ship. But it goes horribly wrong...now the cruiser is in a new reality, and a new war. Can they help their cousins in the UNSC? Or will the Covenant prevail?
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Adventure - Chapters: 29 - Words: 104,009 - Reviews: 760 - Favs: 964 - Follows: 968 - Updated: 10/7/2014 - Published: 1/17/2013 - S. Carter, Master Chief/John-117 - Complete
Inquisitor Carrow and the Bureaucracy of Failure by
littlewhitecat reviews
Now he has been officialy declared an adult Inquisitor Carrow can start to implement his plans, turning Ancient Terra in to the God-Emperor fearing world he knows it should be, and what better place to start than with the Wizarding World? Be afraid, be very afraid...
Crossover - Harry Potter & Warhammer - Rated: T - English - Adventure/Humor - Chapters: 13 - Words: 143,355 - Reviews: 452 - Favs: 1,488 - Follows: 959 - Updated: 6/28/2014 - Published: 11/16/2012 - Harry P. - Complete
Mass Effect: The First War by
ProfFartBurger reviews
The Prothean Ruins weren't. They contained little more than mentionings of an Alien Society; as a result, humanity develops on a completely different path than what was intended, and when first contact is made not with the Turians, but a desperate, destitute race viewed as beggars and thieves, how will this dying race change Humanity? And how will Humanity change the Galaxy? *A/U!*
Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 22 - Words: 200,906 - Reviews: 1850 - Favs: 3,532 - Follows: 2,576 - Updated: 1/12/2014 - Published: 1/26/2013 - OC - Complete
XCOM: Second Contact by
Agayek reviews
With the destruction of the Temple Ship humanity knew peace. XCOM never forgot their motto however, 'always vigilant, always reliable'
Crossover - X-Com & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 26 - Words: 294,105 - Reviews: 1070 - Favs: 2,241 - Follows: 2,318 - Updated: 9/15/2013 - Published: 1/1/2013
Inquisitor Carrow and the GodEmperorless Heathens by
littlewhitecat reviews
The Wizarding World is devastated when Harry Potter disappears from his relatives' house in mysterious circumstances during the summer after his first year at Hogwarts School of Witchcraft and Wizardry. Desperate to have their boy-hero back no matter what they really should have heeded the Muggle saying "be careful what you wish for". Crossover HP/WH40K.
Crossover - Harry Potter & Warhammer - Rated: T - English - Adventure/Humor - Chapters: 10 - Words: 55,611 - Reviews: 275 - Favs: 1,909 - Follows: 992 - Updated: 10/26/2012 - Published: 8/6/2012 - Harry P. - Complete
Consuming Direct Control by
Hyliian reviews
With nothing left for him in the galaxy but empty space and idle time, Alex Mercer finds himself recruited in Commander Shepard's fight against the Collectors. DISCONTINUED.
Crossover - Mass Effect & Prototype - Rated: T - English - Adventure/Sci-Fi - Chapters: 44 - Words: 86,396 - Reviews: 1239 - Favs: 2,234 - Follows: 1,603 - Updated: 6/6/2012 - Published: 4/27/2012 - Shepard (F), Alex M./Zeus - Complete
Angels of the Storm by
Colonel-Mustard1990 reviews
The Reapers have come, doom threatens the galaxy and it is time for Malleus Scandarum and his brothers to stand firm and face the oncoming storm. ME3 Specfic, sequel to Hammerhand, complete.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 65 - Words: 195,460 - Reviews: 340 - Favs: 472 - Follows: 266 - Updated: 1/10/2012 - Published: 2/10/2011 - Space Marines - Complete
Innocent Sin by
TRUE Unknown reviews
There's just not enough love for this couple, huh? A different take on the ending of Persona 3, as well as the end of the Hermit Social Link. And to think, it all started with just a pair of eyes looking over a cellphone background... Minato/Isako
Persona Series - Rated: M - English - Romance - Chapters: 1 - Words: 4,645 - Reviews: 23 - Favs: 156 - Follows: 47 - Published: 4/2/2011 - Ms. Toriumi, Minato A./Makoto Y. - Complete
Hammerhand by
Colonel-Mustard1990 reviews
Honour the Chapter, honour the Emperor, honour the Imperium. Easy oaths to keep when in a world you can understand. Far, far harder, when a place steeped in heresy calls for aid and duty forces your hand to answer.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 37 - Words: 112,150 - Reviews: 168 - Favs: 700 - Follows: 347 - Published: 2/5/2011 - Complete
The Hill of Swords by
gabriel blessing reviews
When Louise Valliere performed her summons for her familiar, she certainly didn't expect for it to be a human! Strangely enough, the boy she summoned, Shirou Emiya, didn't expect to get summoned so soon. He hadn't even died yet!
Crossover - Fate/stay night & Familiar of Zero - Rated: M - English - Fantasy - Chapters: 23 - Words: 356,642 - Reviews: 2704 - Favs: 7,711 - Follows: 3,220 - Updated: 11/17/2010 - Published: 7/18/2010 - Shirō E., Louise - Complete