Code Geass Crossovers
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The White Mask of Sins (Code Geass & Hazbin HotelHelluva Boss) by AZ23AJ reviews
What if CC had a friend from another world and summoned after the Fall of the Black Rebellion to help her? Let's how this new masked person who happens to be an actual demon does in the world of Geass. Rated M for Mature, OCS, AU bit, and OC/Harem
Crossover - Code Geass & Hazbin Hotel - Rated: M - English - Supernatural - Chapters: 12 - Words: 23,733 - Reviews: 15 - Favs: 31 - Follows: 26 - Updated: 9/14 - Published: 8/29 - [OC, C.C.]
A Young Girl's Guerilla War by RagnartheSemiGreen reviews
Tanya dies in an artillery barrage on the Rhine Front, contrary to both her and Being X's plans. Unwilling to let his chew toy escape so easily, Being X reincarnates Tanya back into Japan... Six years before Britannia conquers Area 11. (First posted on Space Battles)
Crossover - Code Geass & Youjo Senki: Saga of Tanya the Evil - Rated: M - English - Adventure/Drama - Chapters: 24 - Words: 270,212 - Reviews: 144 - Favs: 554 - Follows: 690 - Updated: 9/14 - Published: 11/13/2021 - Lelouch L., Kallen S., Naoto S., Tanya
The Celestial Knights by Azure King and Azure Queen reviews
To obtain peace one must be willing to either destroy everything to protect it or the ability to reach an understanding. A young man would reach to stop a war before humanity loses the chance for perpetual peace. To achieve this he needs to reach towards the Heaven's and become something more than what he is to create a kind world. Naruto x Harem
Crossover - Naruto & Code Geass - Rated: M - English - Adventure/Romance - Chapters: 5 - Words: 52,525 - Reviews: 125 - Favs: 562 - Follows: 672 - Updated: 9/13 - Published: 7/11/2019 - Naruto U., C.C., Nunnally L., Tianzi
Code In the Force by gdog1 reviews
Locked away by those who claimed to be loyal to him Lelouch's name has long since been forgotten by history. Now he is back in galaxy that is not so different from the one he had left. What is a Demon Emperor to do now that all he worked for has been lost and is honestly to tried want to start again?
Crossover - Star Wars & Code Geass - Rated: M - English - Adventure/Sci-Fi - Chapters: 4 - Words: 27,615 - Reviews: 44 - Favs: 219 - Follows: 283 - Updated: 9/11 - Published: 3/6
Book of the Shadows Looking Glass - Code Geass R3 Alter by DaCosta Rosencraft reviews
"The work of a man named Lelouch, who donned the mask of a hero named Zero, has yet to be completed. I will finish that work now." From the dark skies of a clear night five years after the Zero Requiem, a new terror descends and burns the imperial capital. A ghost from that terrible age returns. Witness a new age of terror in the Holy Britannia Empire.
Crossover - Code Geass & Fate/Grand Order - Rated: T - English - Fantasy/Supernatural - Chapters: 33 - Words: 143,254 - Reviews: 53 - Favs: 121 - Follows: 119 - Updated: 9/10 - Published: 2/9/2019 - Suzaku K., Nunnally L., Euphemia L.B., Zero
Demon Emperor and Demon King by Imperator's slave reviews
Lelouch expected many things after his death. What he didn't expect was to find himself in the war between seven wizards and historical figures. Still, the prize seems nice enough so he might as well take it. Not to mention working with a fellow demon might be a unique experience.
Crossover - Fate/stay night & Code Geass - Rated: M - English - Adventure/Fantasy - Chapters: 26 - Words: 370,383 - Reviews: 1100 - Favs: 2,125 - Follows: 2,438 - Updated: 9/6 - Published: 2/11/2020 - [Oda Nobunaga, Lelouch L.] Saber, Avenger
Highschool DxD: Lelouch of the Reincarnation by Flux Casey reviews
A new life. Reborn in a world of devils and chess-themed intrigue. After sacrificing everything for a peaceful world, was a Demon Emperor being granted his own personal heaven?
Crossover - Code Geass & High School DxD/ハイスクールD×D - Rated: M - English - Supernatural - Chapters: 33 - Words: 131,694 - Reviews: 641 - Favs: 1,824 - Follows: 2,177 - Updated: 9/6 - Published: 12/31/2021 - Lelouch L.
Reflections by TheStrangerThatCameFromNowhere reviews
No plan survives first contact with the enemy. Virtually anything can happen on the battlefield. In the end, all one can do is adapt and plan ahead for the future. That being said, how can one predict being sent to another world, with seemingly no way back?
Crossover - Code Geass & Arknights - Rated: T - English - Drama - Chapters: 1 - Words: 1,455 - Reviews: 7 - Favs: 41 - Follows: 52 - Updated: 9/5 - Published: 10/9/2021 - Lelouch L., Amiya, W
Code Geass: The Rise of Cobra - Duke's Report by SulliMike23 reviews
Cobra is in the world of Code Geass and GI Joe has come to stop them, but as the Joes prepare for an inevitable confrontation with Britannia, Duke sends a report to GI Joe HQ letting him know how the Joes are feeling.
Crossover - G. I. Joe & Code Geass - Rated: T - English - Chapters: 2 - Words: 5,379 - Reviews: 12 - Favs: 15 - Follows: 8 - Updated: 9/5 - Published: 8/29 - Complete
White Devil & Black Demon by Fan of Fanfics21 reviews
A girl whose destiny of 'befriending' others makes a fateful encounter; a rising demon in the form of a boy from another world who watches her tale and lends his hand when needed. A chance encounter tale of a White Devil and Black Demon.
Crossover - Magical Girl Lyrical Nanoha & Code Geass - Rated: T - English - Chapters: 4 - Words: 4,579 - Reviews: 1 - Favs: 27 - Follows: 31 - Published: 9/3 - Nanoha T., Lelouch L.
Doom of Britannia by Omega E The Reader reviews
Demons have gotten themselves involved in the war between Britannia and the Black Knights. It is up to the Doom Slayer to rip and tear them a new one.
Crossover - Doom & Code Geass - Rated: M - English - Sci-Fi/Supernatural - Chapters: 7 - Words: 17,120 - Reviews: 28 - Favs: 37 - Follows: 41 - Updated: 9/1 - Published: 2/18 - Doomguy, Lelouch L.
Lelouch's Romance Dawn by Ordinn Beaucephalis reviews
"That's some impressive presence you've got there, kid. Tell me, how come you're not a commander yourself?"
Crossover - One Piece & Code Geass - Rated: M - English - Mystery/Adventure - Chapters: 16 - Words: 191,983 - Reviews: 221 - Favs: 800 - Follows: 901 - Updated: 8/27 - Published: 8/4/2016 - Robin, T. Law, Charlotte Katakuri, Lelouch L.
The Overlord Geass by PaulyThide reviews
A Supreme Being cannot be killed or defeated and even when stopped. It may come back for revenge. And so, the consciousness of the universe, God should have never attacked someone with the ability to destroy it all. A new era is about to begin, and while slowly gathering the strength to pay the debt. The Leader of Ainz Ooal Gown, will bring the world to its knees.
Crossover - Code Geass & Overlord/オーバーロード - Rated: M - English - Fantasy/Sci-Fi - Chapters: 12 - Words: 90,061 - Reviews: 131 - Favs: 416 - Follows: 483 - Updated: 8/26 - Published: 11/3/2021 - C.C., Kallen S., OC, Albedo
Code Gundam: A forgotten reality by Fallon 35 reviews
In a alternate world where bitannia nor Knightmare frame's exist but is replaced with mobile suits and geass is replaced with new-types. suzaku now leads the rebellion while lelouch leads a cold war it all takes up to one man to change the world
Crossover - Code Geass & Gundam Seed - Rated: T - English - Sci-Fi/Drama - Chapters: 6 - Words: 51,242 - Reviews: 5 - Favs: 11 - Follows: 9 - Updated: 8/23 - Published: 1/8
Sunrider: The Mask of Zero by sephiroth12285 reviews
It has been years since the Demonic Emperor Lelouch had been slain by Zero with a small few aware of the true events that led to his demise, but now Lelouch finds himself alive again. Drawn into a conflict much larger and dangerous than he could have imagined, has its own Tv Tropes page now.
Crossover - Code Geass & Sunrider - Rated: M - English - Adventure/Sci-Fi - Chapters: 19 - Words: 146,139 - Reviews: 85 - Favs: 166 - Follows: 157 - Updated: 8/22 - Published: 9/23/2015 - Lelouch L., Kayto S., Ava C., Lynn
Sinister War: Scatter-verse by Nexus Matrix reviews
Our story begins with Peter Parker who is from another universe getting involved with Spiderman's foes that formed the greatest Sinister team ever created. Yet the catch is this will decide the fate of not just his own life, but the world that will face this terrible rogue's gallery. (Officially open)
Crossover - Spider-Man & Code Geass - Rated: T - English - Adventure - Chapters: 3 - Words: 17,430 - Reviews: 3 - Favs: 4 - Follows: 4 - Updated: 8/19 - Published: 1/3 - Peter P./Spider-Man, Lelouch L.
Area 11 by definitely a sadomasochist reviews
Area 11, the newest corner of the Britannian Empire, with a prospering economy and equality for Elevens. Or so they say. Many are unhappy with this regime, and one Lelouch vi Brittania, a prince in hiding, uses his newly-gained supernatural powers to lead a revolution as Zero, a masked messiah. So, Britannia contacts the mightiest mercenary army on Earth to fight him: Outer Heaven.
Crossover - Metal Gear & Code Geass - Rated: T - English - Adventure/Sci-Fi - Chapters: 17 - Words: 25,263 - Reviews: 1 - Favs: 4 - Follows: 3 - Updated: 8/19 - Published: 6/12 - Liquid S., Solidus S., Lelouch L., Mao (Code Geass)
Code Geass: Duty of a Nobody by Dark Mage Wyvern Lord reviews
For seven years, Lelouch vi Britannia has lived in the shadows with a family of mutants. But the exiled prince must come into the light when the Shredder wages war against Britannia.
Crossover - Code Geass & Teenage Mutant Ninja Turtles - Rated: T - English - Adventure/Family - Chapters: 2 - Words: 11,001 - Reviews: 26 - Favs: 33 - Follows: 33 - Updated: 8/17 - Published: 7/15 - Lelouch L., Kallen S.
Agent of Rebellion by AgentOrange26 reviews
Noah Ashford lived a complicated life. The son of a prestigious Britannian noble, but he was also half-Japanese. His mother was stolen from him by the Britannians and his father and in turn he swore revenge on them both. The opportunity for revenge has finally arrived, but what will his actions have on those around him and the nation he is trying to free.
Crossover - Naruto & Code Geass - Rated: M - English - Adventure - Chapters: 1 - Words: 10,571 - Reviews: 12 - Favs: 62 - Follows: 75 - Published: 8/15 - Naruto U., Kallen S., Milly A.
Unwavering Ideals by VincentFS reviews
They’d been shattered once, but not ever again.
Crossover - Harry Potter & Code Geass - Rated: M - English - Adventure/Drama - Chapters: 1 - Words: 1,119 - Reviews: 2 - Favs: 13 - Follows: 22 - Published: 8/12 - Lelouch L.
El juego ha cambiado by jizurosX2 reviews
Bueno esta es una historia que adopte del Escritor gdog1. el me dio permiso para cambiar las cosas a mi manera y eso hare pero de igual manera recomiendo ver la version de el ya que esta buenisima. la primicia es simple que hubiese pasado si Lelouch renacia en Game of Trhone. esto sera un Lelouch x Harem.
Crossover - Code Geass & Game of Thrones - Rated: M - Spanish - Chapters: 2 - Words: 3,517 - Reviews: 1 - Favs: 10 - Follows: 10 - Updated: 8/9 - Published: 8/3 - Lelouch L., Shirley F., Euphemia L.B., Daenerys T.
THE GAME A CHANGED by jizurosX2 reviews
Well this is a story that adopts from the writer GDOG1. He gave me permission to change things in my way and that I will do but I also recommend seeing the version of Him since it is very good. The scoop is simple that it would have happened if Lelouch was reborn in Game of Thone. This will be a Lelouch X Harem.
Crossover - Code Geass & Game of Thrones - Rated: M - English - Chapters: 2 - Words: 3,437 - Reviews: 11 - Favs: 36 - Follows: 41 - Updated: 8/9 - Published: 8/3 - Lelouch L., Shirley F., Euphemia L.B., Daenerys T.
Into Unknown Waters by MoonlightWright reviews
Ryley Robinson is dead. He was dead before he hit the water on Planet 4546B. Meanwhile, surrounded and backed against the wall, Zero touches the door to the Thought Elevator and accidentally activates it. Volatile energy lashes out towards everyone as Lelouch's geass begins to go awry, having been kick started. The door to Subnautica's world opens in a show of blinding white light.
Crossover - Code Geass & SubNautica - Rated: M - English - Adventure/Sci-Fi - Chapters: 13 - Words: 123,315 - Reviews: 111 - Favs: 215 - Follows: 284 - Updated: 8/5 - Published: 12/22/2020 - Lelouch L., Suzaku K., Kallen S.
Arc-V: The Geass Switch by MoonlightWright reviews
Things weren't supposed to go this badly. All Zero had to do was trap the Lancelot on Shikine island and get Suzaku to join him, easy. So how in the world did Zero end up in another dimension? This new place is in the middle of a war sure, but they don't have guns. They have duels? And monsters? Whatever happened to chess! Well, at least Zero has a hobby, taking down Academia.
Crossover - Code Geass & Yu-Gi-Oh! Arc-V - Rated: M - English - Drama/Adventure - Chapters: 41 - Words: 512,241 - Reviews: 290 - Favs: 299 - Follows: 304 - Updated: 8/5 - Published: 7/14/2019 - Lelouch L., Zero, Yuto, Yuya S.
Rebellion from Eastern Wonderland by DarkAeroSage reviews
Nearly a month after the end of the Second Pacific War, Lelouch and Nunnally were left on their own trying to find a residence to stay, but to no avail. However, a chance encounter with a unique, yet eccentric woman has them taken to a world unlike anything they've ever experienced. How will things change as they experience living in the Land of Fantasy?
Crossover - Code Geass & Touhou Project - Rated: T - English - Fantasy/Supernatural - Chapters: 2 - Words: 24,974 - Reviews: 19 - Favs: 63 - Follows: 91 - Updated: 8/4 - Published: 6/18 - Lelouch L., Nunnally L.
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