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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: 2,345 - Follows: 2,663 - 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: 77 - Favs: 210 - Follows: 205 - 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: 10 - Favs: 25 - Follows: 25 - 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: 83 - Follows: 91 - 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: 154 - Favs: 537 - Follows: 605 - 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: 188 - Follows: 181 - 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: 36 - Favs: 112 - Follows: 130 - 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: 169 - Favs: 465 - Follows: 631 - 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: 5 - Favs: 8 - 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: 402 - Follows: 505 - 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: 138 - Follows: 135 - 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: 75 - Follows: 67 - 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: 38 - Follows: 43 - Updated: 5/24 - Published: 3/2 - Lelouch L., C.C., Kallen S.
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: 108 - Follows: 105 - 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: 15 - 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: 15 - Follows: 18 - Updated: 5/11 - Published: 3/24 - Lelouch L., Cornelia L.B., Marrybell mB.
Code Geass: Devil Summoner by Inquisitor Halbread reviews
Warning: This story will contain death and grievous injury. The faint of heart has been warned Follow Isaac Cross, a young fallen noble of Britannia who sought refuge in the newly conquered Area 11 as he fights to survive and thrive in a world of shadow and protect his way of life from family enemies, terrorists, cult members and demons. Lots of demons.
Crossover - Megami Tensei & Code Geass - Rated: M - English - Supernatural/Adventure - Chapters: 4 - Words: 16,958 - Reviews: 3 - Favs: 7 - Follows: 9 - Updated: 5/6 - Published: 4/12 - Lelouch L., Suzaku K., Nunnally L., OC
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 how will actions effect those around him and the nation he is trying to free.
Crossover - Naruto & Code Geass - Rated: M - English - Adventure - Chapters: 3 - Words: 29,429 - Reviews: 20 - Favs: 103 - Follows: 117 - Updated: 5/5 - Published: 8/15/2022 - Naruto U., Kallen S., Milly A.
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: 5 - Words: 29,364 - Reviews: 49 - Favs: 77 - Follows: 69 - Updated: 5/4 - Published: 7/15/2022 - Lelouch L., Kallen S.
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: 42 - Words: 172,348 - Reviews: 777 - Favs: 2,335 - Follows: 2,730 - Updated: 4/24 - Published: 12/31/2021 - Lelouch L.
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: 5 - Words: 34,410 - Reviews: 67 - Favs: 276 - Follows: 349 - Updated: 4/23 - Published: 3/6/2022
Transformers: Rondo of Titan and Beyond R1: The Spark of Rebellion by Alpha Phoenix Studio reviews
The Story concerning the Angel named Angelise who is adored by all of her subjects and the Demon named Lelouch who want to alter the world by annihilating it but their fate and their future was clash as their world are about to change when Titans arrive. (Rated T for which contain strong violence, language and some sexual content.)
Crossover - Code Geass & CROSS ANGE Rondo of Angel and Dragon/クロスアンジュ 天使と竜の輪舞 - Rated: T - English - Drama/Sci-Fi - Chapters: 8 - Words: 41,143 - Reviews: 117 - Favs: 45 - Follows: 47 - Updated: 4/20 - Published: 11/21/2020 - Lelouch L., C.C., Ange, OC
Zero's Remnant Requiem by Alpha4689 reviews
The Zero Requiem is complete, now Lelouch passes on, fulfilling his destiny. Or has he. Forced into a new world, he shall take up the Mantle of Zero once more, to fix a broken world. (Rewrite of Zero's Remnant)
Crossover - Code Geass & RWBY - Rated: T - English - Adventure/Sci-Fi - Chapters: 10 - Words: 113,428 - Reviews: 251 - Favs: 456 - Follows: 577 - Updated: 4/17 - Published: 2/2/2022 - Lelouch L., Suzaku K., C.C., Kallen S.
Pokémon: Britannia by Firem78910 reviews
Charlemagne Ri Britannia never knew true happiness as it was ripped away from him. But when the Chinese Federation attacks Japan he would help defend them but it will also give him the chance to take back his happiness. As he reunites with his son Ash Ketchum
Crossover - Pokémon & Code Geass - Rated: M - English - Adventure - Chapters: 2 - Words: 5,166 - Reviews: 4 - Favs: 22 - Follows: 23 - Updated: 4/16 - Published: 12/31/2022 - [OC, Delia K./Hanako] [Ash K./Satoshi, Serena]
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