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Code Prime - R2: Revolution by Iron117Prime reviews
Britannia has fallen, and the Decepticons are well on their way to the complete global domination of Earth. However, hope is not lost. Six months after the failed Black Rebellion, Zero and Optimus Prime have returned to finish what they've started. With their Autobot-Black Knight alliance grown with new additions, our heroes have ever intent on freeing Earth once and for all.
Crossover - Transformers/Beast Wars & Code Geass - Rated: T - English - Adventure - Chapters: 34 - Words: 502,970 - Reviews: 1426 - Favs: 822 - Follows: 751 - Updated: 8h - Published: 1/15/2021 - Bumblebee, Optimus Prime, Lelouch L., Kallen S.
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: 33 - Words: 410,376 - Reviews: 245 - Favs: 824 - Follows: 969 - Updated: 6/27 - Published: 11/13/2021 - Lelouch L., Kallen S., Naoto S., Tanya
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: 4 - Words: 19,598 - Reviews: 4 - Favs: 8 - Follows: 7 - Updated: 6/26 - Published: 1/3/2022 - Peter P./Spider-Man, Lelouch L.
Samurai Jack vs Holy Britannain Empire by Nexus Matrix reviews
What if, Samurai Jack was sent in a reality where he faces mechs bigger than his usual robots. If so, what would happen if he went against something like the Holy Britannia Empire to free Japan from their grasp? (Officially a story, now available)
Crossover - Samurai Jack & Code Geass - Rated: T - English - Chapters: 5 - Words: 17,811 - Reviews: 11 - Favs: 35 - Follows: 24 - Updated: 6/26 - Published: 1/15/2017 - Jack, Lelouch L., Kallen S.
Evolution Geass: Uzumaki of the Retribution by SoulEmbrace2010 reviews
Naruto, Naruko, and Lucienne aim to destroy Britannia, in memory of their departed loved ones. The trio trained and prepared for the future war, but their hands are forced when they got caught up in the Shinjuku incident. In response, they start their campaign early to free Japan, only to find that there's more going on, and the world is at stake. AU, OOC, Naru/Harem, Mass-Xovers
Crossover - Naruto & Code Geass - Rated: M - English - Sci-Fi/Supernatural - Chapters: 15 - Words: 270,249 - Reviews: 246 - Favs: 601 - Follows: 619 - Updated: 6/25 - Published: 2/12/2021 - [Naruto U., C.C., Kallen S., Euphemia L.B.]
Honkai: Apostle's Revolution by Sephiroth12285 reviews
During what was meant to be a simple fishing trip, Lelouch, Suzaku and Nunnally reel in a certain girl with elf ears by accident just as the war between Japan and Britannia begins. Unaware they are about to be drawn into a ancient conspiracy and conflict against the threat called the Honkai, but the Honkai aren't the only enemies they must be mindful of.
Crossover - Code Geass & Honkai Impact 3rd - Rated: M - English - Adventure/Sci-Fi - Chapters: 5 - Words: 38,825 - Reviews: 38 - Favs: 91 - Follows: 97 - Updated: 6/4 - Published: 5/7 - Lelouch L., Elysia
A Certain Demon Emperor by Dath Zion reviews
It was known as mystery- something that fell outside the scope of common thinking, something incomprehensible and indecipherable to those bound by the laws of the world. Born into a world where the supernatural walk upon the earth, Lelouch found a new purpose for himself following his Zero Requiem. Would he destroy this world or would he create it anew?
Crossover - Code Geass & Toaru Majutsu no Index/とある魔術の禁書目録 - Rated: T - English - Supernatural/Adventure - Chapters: 16 - Words: 81,591 - Reviews: 79 - Favs: 268 - Follows: 328 - Updated: 6/20 - Published: 8/15/2022 - Lelouch L., Aiwass, Othinus, Coronzon
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: 29 - Words: 446,609 - Reviews: 1203 - Favs: 2,332 - Follows: 2,649 - Updated: 6/19 - Published: 2/11/2020 - [Oda Nobunaga, Lelouch L.] Saber, Avenger
Kingdom Hearts: Lelouch of Infinite Hearts by Sephiroth12285 reviews
Following a strange dream Lelouch gains a weapon known as a Keyblade, but shortly afterwards Ashford Academy is attacked. Nunnally is abducted and he is cast away to another world. Now Lelouch must learn to use it and find allies to save his sister as others begin obtaining the Keyblade setting the stage for a conflict unlike no other. Multi-series crossover. Has a TvTropes page.
Crossover - Kingdom Hearts & Code Geass - Rated: T - English - Adventure/Fantasy - Chapters: 13 - Words: 115,504 - Reviews: 65 - Favs: 117 - Follows: 102 - Updated: 6/14 - Published: 9/17/2021 - Lelouch L.
Zero the Knightmare Slayer by jetslinger333 reviews
Some people would call Lelouch Vi Britannia many things: a liar, backstabber, tyrant, and others when he began his path of revenge. But what if He experienced someone else's life and knows that person's endeavor would make him a better person in life? This is how it Began.
Crossover - Code Geass & Kimetsu no Yaiba/鬼滅の刃 - Rated: T - English - Adventure/Spiritual - Chapters: 9 - Words: 55,286 - Reviews: 74 - Favs: 202 - Follows: 199 - Updated: 6/13 - Published: 1/18/2022
In Search for an Answer by SnakeValerianSmash reviews
The hope of the old world from which I came had died, leaving only dust and ashes of its former home. but in this world he may find the answer he was looking for, along with these brats who keep pestering him about making a revolution against Britannia "Mr. Lynx can I have cookies?" "yes, only if you promise me that you will control your rebel brother"
Crossover - Armored Core & Code Geass - Rated: K - English - Sci-Fi/Drama - Chapters: 2 - Words: 13,322 - Reviews: 8 - Favs: 19 - Follows: 20 - Updated: 6/12 - Published: 6/4 - OC, Lelouch L., Nunnally L.
Changing Plans by How-not-to-do-something reviews
"So, they're desperate, willing to help, and they have giant robots as well. This will be interesting in the Chinese sense." Rated T for violence and some language.
Crossover - Code Geass & Muv-Luv/マブラヴ - Rated: T - English - Sci-Fi - Chapters: 14 - Words: 92,584 - Reviews: 68 - Favs: 82 - Follows: 89 - Updated: 6/12 - Published: 1/4/2020
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: 15 - Words: 103,092 - Reviews: 153 - Favs: 532 - Follows: 597 - Updated: 6/11 - Published: 11/3/2021 - C.C., Kallen S., OC, Albedo
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, which needs updating.
Crossover - Code Geass & Sunrider - Rated: M - English - Adventure/Sci-Fi - Chapters: 22 - Words: 169,120 - Reviews: 107 - Favs: 185 - Follows: 178 - Updated: 6/10 - Published: 9/23/2015 - Lelouch L., Kayto S., Ava C., Lynn
When Worlds Collide by StarKing28 reviews
Through the 21st century and in the early 22nd century, Charles led his nation through an era of peace, prosperity, and technological development. Although there were some conflicts along the way, the Empire stood strong and became a spacefaring nation along with its allies. However, that peace was shattered when a mysterious portal opened in Los Angeles in 2130s.
Crossover - Code Geass & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: M - English - Sci-Fi/Fantasy - Chapters: 7 - Words: 80,632 - Reviews: 32 - Favs: 103 - Follows: 121 - Updated: 6/7 - Published: 4/3 - Lelouch L., Cornelia L.B., Rory, Pina
Adversor Et Admorsus by PhoinexFire reviews
An ancient battle millennium old will soon begin again, forces of a dark order shall face an Empire of Light. Nations caught in the middle must choose and the future shall be shaped in the stars. Peace shall reign in the end, whether it comes in darkness or arises in light. One way or the other the darkness shall come and face the Terran Star Imperium. Sequel to Britannia Rising.
Crossover - Code Geass & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 11 - Words: 88,439 - Reviews: 167 - Favs: 457 - Follows: 618 - Updated: 6/4 - Published: 5/13/2020 - [Lelouch L., C.C.]
Bask in the Twilight, Lelouch! by TTY7 reviews
He should have realized falling in love was a bad idea the second body glitter got involved.
Crossover - Sailor Moon & Code Geass - Rated: T - English - Humor/Romance - Chapters: 1 - Words: 2,828 - Reviews: 3 - Favs: 6 - Follows: 7 - Published: 6/2 - [Usagi T./Serena/Bunny/Sailor Moon, Lelouch L.] Rei H./Raye/Sailor Mars, Suzaku K.
Thou Art a Contractor by jkawsome reviews
Even with over fifteen years of peace between Britannia and the world at large, corruption and evil still seep through the cracks. Ren Amamiya hopes to change this with his friends as Phantom Thieves. The problem is, Ren was once Lelouch vi Britannia - even if he doesn't know it yet - and his past life isn't going to let him go so easily.
Crossover - Code Geass & Persona Series - Rated: T - English - Supernatural/Drama - Chapters: 16 - Words: 105,573 - Reviews: 181 - Favs: 397 - Follows: 494 - Updated: 5/31 - Published: 12/24/2019 - Lelouch L., C.C., Akira K./Ren A.
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: 37 - Words: 161,909 - Reviews: 64 - Favs: 137 - Follows: 133 - Updated: 5/29 - Published: 2/9/2019 - Suzaku K., Nunnally L., Euphemia L.B., Zero
The Possibilities of Kings by Gundam-Knight-Chris reviews
Banagher Links, pilot of the Unicorn Gundam. Lelouch Lamperouge, exiled prince of Britannia. These two young men will embark on a separate journey that will change the world. One seeks to bring understanding. The other to drown the world in blood for the one he loves most. The Possibility of the Beast shall awaken a new dawn. (Rated T for now)
Crossover - Gundam UC & Code Geass - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 4,666 - Reviews: 32 - Favs: 73 - Follows: 66 - Updated: 5/28 - Published: 9/6/2020 - Banagher Links, Lelouch L., Suzaku K., Kallen S.
Code Geass: Tricksters' Requiem by BahamutX978 reviews
Rebellion can take many forms, and many paths. For Lelouch Lamperouge, becoming a Trickster was not how he expected his quest to begin, but one must play with the cards they are dealt. I am thou, thou art I.
Crossover - Code Geass & Persona Series - Rated: T - English - Adventure/Supernatural - Chapters: 4 - Words: 32,802 - Reviews: 9 - Favs: 37 - Follows: 43 - Updated: 5/24 - Published: 3/2 - Lelouch L., C.C., Kallen S.
Lelouch Lamperouge: Teaching Assistant and Resident of Hell by Aminta.defender reviews
Sometimes, Snape has his doubts about the headmaster, especially when he does things like hiring the freshly summoned demon of unknown power as the new potions TA. With Voldemort on the hunt for his lost summon and a ritual that could potentially strip Lelouch of his freewill, they reluctantly agree to the charade. Lelouch needed a vacation from ruling Hell anyway.
Crossover - Harry Potter & Code Geass - Rated: T - English - Drama/Humor - Chapters: 4 - Words: 15,495 - Reviews: 57 - Favs: 244 - Follows: 346 - Updated: 5/23 - Published: 2/8/2022 - Severus S., Lelouch L.
Code Tenno Uprising of the Void by EvaShinobiKaiserKnight reviews
The New War may have ended and the mystery of the Zariman has yet to be discovered but fools tampering with the Void and drawn the brave and honorable Tenno to topple yet another Empire. Fools seek to challenge God to a duel to the death and in response God answered the challenge and sent forth his devils to punish them. Now I ask what is a King to the eldritch power of the Void?
Crossover - Code Geass & Warframe - Rated: M - English - Sci-Fi/Supernatural - Chapters: 20 - Words: 210,945 - Reviews: 46 - Favs: 105 - Follows: 100 - Updated: 5/16 - Published: 8/28/2022 - Nunnally L., Nemo, Excalibur, Operator
A Chessboard of 100 Girlfriends by EpicLinkSam reviews
After performing the Zero Requiem, Lelouch vi Britannia finds himself in another world with a new task; assist Rentarou Aijou in getting a hundred girlfriends. ...the Gods of the world just could not let him rest, could they?
Crossover - Misc. Anime/Manga & Code Geass - Rated: T - English - Humor/Romance - Chapters: 2 - Words: 10,763 - Reviews: 5 - Favs: 14 - Follows: 14 - Updated: 5/13 - Published: 2/11 - Lelouch L.
Code Dino Crisis by Kaiju Slayer 9117 reviews
In the 21st century, mankind fought for the right to resources, which have left portions of earth ruined. As a result, some scientists have turned to Sakuradite as the main method of powering their devices, but Dr. Kirk proposed a clean, limitless energy, which he named Third Energy. Because of his breakthrough, many are out to steal his research, including the Black Knights.
Crossover - Dino Crisis & Code Geass - Rated: M - English - Horror/Sci-Fi - Chapters: 2 - Words: 20,814 - Reviews: 2 - Favs: 14 - Follows: 16 - Updated: 5/11 - Published: 3/24 - Lelouch L., Cornelia L.B., Marrybell mB.
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