Cthulhu Mythos Crossovers
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God of War: R'lyeh by GreenSonic420
Kratos ventures to a new land and finds out that it is being corrupted by an evil god. This story is a sequel to The Last Temptation of the Ghost of Sparta. (Warning: Blood, Fighting, and Some Swearing)
Crossover - God of War & Cthulhu Mythos - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 5,203 - Published: 9/28 - Kratos - Complete
Elder Times by ElliotJA
The Hulk finds himself somehow deposited twenty thousand years in the past, in the realm of Valusia, which is currently under attack from a ferocious dragon. Featuring Robert E. Howard's King Kull.
Crossover - Incredible Hulk & Cthulhu Mythos - Rated: K - English - Chapters: 2 - Words: 1,997 - Updated: 9/26 - Published: 9/15 - B. Banner, Joe Fixit/Gray Hulk - Complete
A Young Girl's Weaponization of the Mythos by Zahariel reviews
Tanya thought that writing a paper on the potential applications of ancient magic would be her ticket to being assigned to boring, useless, SAFE research work far from the frontlines. But her crazy theory turned out to work well beyond her expectations, and now, as the head of Division Y, she has to manage the mad scientists and monsters under her command. Curse you, Being X !
Crossover - Cthulhu Mythos & Youjo Senki: Saga of Tanya the Evil - Rated: T - English - Parody/Supernatural - Chapters: 25 - Words: 198,196 - Reviews: 369 - Favs: 849 - Follows: 898 - Updated: 9/24 - Published: 12/25/2022 - Tanya, Viktoriya
RWBY Noir by Wombag1786 reviews
"The most merciful thing in the world, I think, is the inability of the human mind to correlate all its content." In 1919, the world has seen the horrors of the great war come to an end, yet forces behind the vale of sanity work and worm into the booming new world. Thankfully, humanity will not be alone in this madness. Though Madness, may prove to be a Blessing then Sanity.
Crossover - Cthulhu Mythos & RWBY - Rated: M - English - Mystery/Horror - Chapters: 63 - Words: 489,711 - Reviews: 236 - Favs: 137 - Follows: 152 - Updated: 9/18 - Published: 10/16/2019 - OC, Team RWBY, Team RNJR
The Bored Outer God II: Through the Gate by Daemon-Sultan reviews
In 2081, a gate mysteriously opens in Santa Maria, a city in the Antarctic Dominion's Province of Naashoth. Out of it comes an opportunity, a casus beli, a chance for the great Antarctian war machine to move once again.
Crossover - Cthulhu Mythos & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: M - English - Horror/Humor - Chapters: 6 - Words: 38,335 - Reviews: 4 - Favs: 44 - Follows: 48 - Updated: 9/13 - Published: 10/18/2021 - Pina
A Snake Called Nyarlathotep by Daemon-Sultan reviews
In London, four very different people team up on a jewel heist, then try to double-cross one another for the loot- wait, wrong, uh, everything. When High-Pharaoh Nyarlathotep is summoned by a cult to do their dirty work, he finds himself thrust into a universe where Dumbledore is an evil idiot, the Weasleys are scheming, Harry Potter is female, and Hermione is a terrible person.
Crossover - Harry Potter & Cthulhu Mythos - Rated: M - English - Parody/Humor - Chapters: 5 - Words: 35,311 - Reviews: 2 - Favs: 62 - Follows: 89 - Updated: 9/13 - Published: 3/2/2022 - [Harry P., Draco M.] George W., Fred W.
Beauty and the Elditch Horror by The Abe Simp
A parody of beauty and the beast with hp lovecraft and his wife sonia
Crossover - Cthulhu Mythos & Beauty and the Beast - Rated: T - English - Romance/Parody - Chapters: 1 - Words: 85 - Published: 9/1 - Belle, Beast/Prince
The midnight society by The Abe Simp
Join hp lovecraft, Edgar allan poe, sonia greene Stephen king and Mary shelley in the midnight society
Crossover - Cthulhu Mythos & Edgar Allan Poe - Rated: T - English - Humor/Friendship - Chapters: 1 - Words: 160 - Published: 8/28
In-Universe Papers: A Multifandom Compendium by DarkEmpress239
Welcome to my chaotic compendium! This is exactly what the title suggests it is. If you haven’t deduced that, this is a collection of essays, extracts, snippets, letters, you name it, from various fics I have – both published and not, across various fandoms. Many of these don’t appear in the fics themselves, or at least not in full. This is unbetaed, rated M for safety.
Crossover - Harry Potter & Cthulhu Mythos - Rated: M - English - Chapters: 2 - Words: 1,838 - Favs: 1 - Follows: 1 - Published: 7/27
The Secret of Xicalpan by Thranduil Oropherion Redux reviews
Indiana Jones goes on a search and finds his own worst nightmare
Crossover - Indiana Jones & Cthulhu Mythos - Rated: T - English - Adventure/Horror - Chapters: 3 - Words: 17,786 - Reviews: 4 - Favs: 2 - Follows: 4 - Updated: 7/22 - Published: 7/19 - Indiana Jones, OC
Universo Lovecraft-Park by ReyNoMuerto
Cthulhu había sido derrotado, Mint-Berry Crunch le había robado a Kenny su oportunidad de entender quién o qué era realmente; pero eso no significaba que fuera a rendirse tan fácilmente. Estaba decidido a seguir investigando sobre el Necronomicón , sobre los Antiguos y sobre su maldición. Seguiría la huella de los dioses hasta donde fuera que esta lo condujera, hasta el final.
Crossover - South Park & Cthulhu Mythos - Rated: M - Spanish - Adventure/Supernatural - Chapters: 28 - Words: 77,053 - Favs: 1 - Follows: 4 - Updated: 6/12 - Published: 10/1/2022 - Eric Cartman, Kenny M., Kyle B., Stan M.
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: 26 - Words: 207,839 - Reviews: 1774 - Favs: 4,921 - Follows: 5,700 - Updated: 5/2 - Published: 6/5/2013 - Saren A., Shepard, OC
Shadows Over Fuuka by DrummondType2
Mai Tokiha finds herself in Fuuka, where strange creatures tied to ancient rites are encroaching and her mind threatens to break.
Crossover - Mai HiME & Cthulhu Mythos - Rated: M - English - Horror/Sci-Fi - Chapters: 5 - Words: 10,847 - Favs: 1 - Published: 4/29 - [Natsuki K., Shizuru F.] Mai T.
Legacy of the Arcanist by LuckyMe8ball reviews
Evan Goodwin who was fighting Eldritch beings for his entire life, got himself into his final encounter with The King in Yellow. After the battle he was transported into weird world with more advanced techonology. Evan uses this oportunity and decides to go on a retirement to find happines in normal life. Little did he know that it was the beginning of a another great journey.
Crossover - Cthulhu Mythos & High School DxD/ハイスクールD×D - Rated: M - English - Adventure/Romance - Chapters: 2 - Words: 10,054 - Reviews: 3 - Favs: 39 - Follows: 59 - Updated: 4/21 - Published: 2/14 - H. Issei, OC
Nightmare by LordRockhim
Dreams need a meaning, guess the distance of hell? Thou shall not awakened The Great Old Ones Ayanokouji dream something, before the day of his salvation. What in the hell is happening?
Crossover - Classroom of the Elite/ようこそ実力至上主義の教室へ & Cthulhu Mythos - Rated: K - English - Romance/Horror - Chapters: 1 - Words: 2,936 - Favs: 4 - Follows: 2 - Published: 4/2
The Shadow over Bal Harbour by chilled monkey reviews
While exploring an island Mike and Maya encounter the evil cultists of the Order of Dagon.
Crossover - Flipper & Cthulhu Mythos - Rated: T - English - Supernatural/Horror - Chapters: 1 - Words: 3,584 - Reviews: 2 - Favs: 1 - Follows: 1 - Published: 3/8 - Complete
Le rêveur by AvaTarbleu reviews
D'abord un arbre, ensuite un lac, les scènes s'enchaînent et Loki fait de mauvais rêves.
Crossover - Prisoners & Cthulhu Mythos - Rated: T - French - Crime - Chapters: 22 - Words: 17,828 - Reviews: 42 - Favs: 1 - Follows: 2 - Updated: 1/11 - Published: 1/10/2021 - D. Loki - Complete
The Unseen Terror by chilled monkey reviews
(Once Upon a Time... Space x-over) While investigating a distress call Pierrot, Psi and Metro encounter a terrifying creature from the depths of space, the Star Vampire.
Crossover - Misc. Cartoons & Cthulhu Mythos - Rated: T - English - Mystery/Horror - Chapters: 1 - Words: 2,622 - Reviews: 2 - Favs: 1 - Follows: 1 - Published: 12/26/2022 - Complete
Batman and the Masquerade of Hastur Part 1 by Darkspawndweller04 reviews
When Batman and Alfred get invited to a strange party they find that they are not the only ones who have been pulled from their daily lives. Many characters from different worlds and walks of life and brought together. How will they deal with the mind games of Hastur? Warning: contains poop, Thanos dressed as some sort of Pharoah and sad Voldemort.
Crossover - Batman & Cthulhu Mythos - Rated: M - English - Supernatural/Horror - Chapters: 1 - Words: 3,630 - Reviews: 2 - Favs: 2 - Follows: 1 - Published: 11/18/2022 - Alfred P., Bruce W./Batman, Harvey D. - Complete
Child of the Crawling Chaos by Alias001 reviews
No true summary yet. Eldritch stuff. Fem(?)Harry.
Crossover - Harry Potter & Cthulhu Mythos - Rated: M - English - Adventure/Supernatural - Chapters: 9 - Words: 4,555 - Reviews: 20 - Favs: 173 - Follows: 223 - Updated: 10/28/2022 - Published: 5/4/2022 - Harry P.
Beyond Angled Space by Qoheleth reviews
In which it is revealed where Uncle Andrew's dust came from, what the compiler of the Commoriom myth-cycle did in his dreams, and how Discord first came to Equestria. (Yes, it's actually one of those triple crossovers they don't let you label.)
Crossover - Chronicles of Narnia & Cthulhu Mythos - Rated: K+ - English - Supernatural - Chapters: 1 - Words: 3,904 - Reviews: 3 - Favs: 3 - Follows: 1 - Published: 9/24/2022 - Complete
Yog-Sothoth by Sophie Gamer Girl 7z reviews
Se avecina una nueva guerra santa, en un universo distinto, en un sitio muy alejado de las fronteras mágicas de los héroes que conocemos, y de este modo, está guerra santa presenta a un nuevo guerrero. Por que Yog-Sothoth el supremo dios del conocimiento ha decidido usar este conflicto para luchar contra Nyarlathothep. (Precuela de Yog-Sothoth grand order)
Crossover - Fate/stay night & Cthulhu Mythos - Rated: T - Spanish - Horror/Adventure - Chapters: 1 - Words: 1,347 - Reviews: 2 - Favs: 2 - Follows: 3 - Published: 9/12/2022 - Complete
Eldritch Dragon Slayer by Hakimaster38 reviews
The multiverse is an interesting place, one of infinite possibilities. One of these possibilities became reality when a young dragon slayer discovers a tome of forbidden knowledge that sends the world of earthland on a downward spiral through the realms of depravity, anguish and insanity that is beyond mortal understanding.
Crossover - Cthulhu Mythos & Fairy Tail - Rated: M - English - Horror/Sci-Fi - Chapters: 12 - Words: 59,693 - Reviews: 9 - Favs: 41 - Follows: 37 - Updated: 9/5/2022 - Published: 4/7/2022 - Wendy M., Carla
Fate Extra : The Music of the Spheres by celian Cogitore reviews
And in its dark ages, even death can die... 2099, a tragic time, a world ravaged by war and where corruption reigns. As the end of the world seems imminent, a hibernation capsule containing the last Master reappears. With the awakening of Hakuno Kishinami a new Grail War begins!
Crossover - Fate/stay night & Cthulhu Mythos - Rated: M - English - Supernatural/Sci-Fi - Chapters: 41 - Words: 191,992 - Reviews: 75 - Favs: 111 - Follows: 123 - Updated: 8/22/2022 - Published: 1/23/2020 - [Hakuno K., Tamamo] Gilles de Rais/Bluebeard, Jeanne d'Arc - Complete
What Rests Above, Rest Below by Zeroraid reviews
He wasn't supposed to be here, not in this world - this shard of reality. But here he was, a Seeker upon a world abandoned by its own Gods and now held by Ones left unseen. Remnant has him now, and he knows how it's story is "supposed" to play out. That doesn't mean its going to. The Old Ones has changed the script, and the Seeker has his own little edits to make to it. Revision
Crossover - Cthulhu Mythos & RWBY - Rated: M - English - Supernatural/Sci-Fi - Chapters: 3 - Words: 8,600 - Reviews: 1 - Favs: 14 - Follows: 19 - Updated: 7/13/2022 - Published: 3/21/2022 - OC
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